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IT Member Profile

... Nuno Miguel Gonçalves Borges de Carvalho

Senior Researcher

Nuno Carvalho

Academic position: Full Professor
Joining date: 01-01-1999
Roles in IT: Senior Researcher
Thematic Line: Wireless Technologies
Group: Radio Systems – Av

Email: Send Email
Address: IT – Aveiro
Instituto de Telecomunicações
Campus Universitário de Santiago
P-3810-193 AVEIRO - PORTUGAL
Tel: +351 234 377 900
Fax: +351 234 377 901

Alternative Personal Web Page

ORCID iD
https://www.orcid.org/0000-0002-7402-2099

RESEARCHER IDSCHOLARLinkedIn

Bio

Nuno Borges Carvalho(S’97–M’00–SM’05-F’15) was born in Luanda, Angola, in 1972. He received the Diploma and Doctoral degrees in electronics and telecommunications engineering from the University of Aveiro, Aveiro, Portugal, in 1995 and 2000, respectively.

He is currently a Full Professor and a Senior Research Scientist with the Institute of Telecommunications, University of Aveiro and an IEEE Fellow. He coauthored Intermodulation in Microwave and Wireless Circuits (Artech House, 2003), Microwave and Wireless Measurement Techniques (Cambridge University Press, 2013) and White Space Communication Technologies (Cambridge University Press, 2014). He has been a reviewer and author of over 200 papers in magazines and conferences. He is associate editor of the IEEE Microwave Magazine and Cambridge Wireless Power Transfer Journal and former associate editor of the IEEE Transactions on Microwave Theory and Techniques.

He is the co-inventor of six patents. His main research interests include software-defined radio front-ends, wireless power transmission, nonlinear distortion analysis in microwave/wireless circuits and systems, and measurement of nonlinear phenomena. He has recently been involved in the design of dedicated radios and systems for newly emerging wireless technologies.

Dr. Borges Carvalho is the chair of the IEEE MTT-20 Technical Committee and the past-chair of the IEEE Portuguese Section and MTT-11 and also belong to the technical committees, MTT-24 and MTT-26. He is also the vice-chair of the URSI Commission A (Metrology Group). He was the recipient of the 1995University of Aveiro and the Portuguese Engineering Association Prize for the best 1995 student at the University of Aveiro, the 1998 Student Paper Competition (Third Place) of the IEEE Microwave Theory and Techniques Society (IEEE MTT-S) International Microwave Symposium (IMS), and the 2000 IEE Measurement Prize.

He is a Distinguished Microwave Lecturer for the IEEE Microwave Theory and Techniques Society.

Scientific Achievements

  • Agregação, Universidade de Aveiro, 01-01-2009
  • PhD, Universidade de Aveiro, 01-01-2000
  • Licenciatura, Universidade de Aveiro, 01-07-1995
  • MTT-11 Technical Committee Member, 01-10-2005, Member
  • URSI, 01-10-2005, Member
  • European Microwave Association, 01-10-2004,
  • ARFTG, 01-01-2000, Member
  • Universidade de Aveiro, 01-10-1997,
  • Ordem dos Engenheiros, 01-08-1995,
  • IEEE, 01-09-1993,
  • Software Defined Radio
  • Nonlinear Distortion
  • Indoor Location
  • Cognitive Radio Transceivers
  • Wireless Power Transmission
31Supervision of PhD theses
As Supervisor
As Co-supervisor
10Supervision of MSc theses
As Supervisor
As Co-supervisor
6Books
  • N.B.C. Carvalho, A. Boaventura, Radio Frequency Identification Engineering How to Engineer an RFID Reader, Cambridge University Press, london, 2025,
    | BibTex
  • N. Shinohara, N.B.C. Carvalho, TI Imura, TM Miyamoto, KF Fujimori, A. Costanzo, Theory and Technology of Wireless Power Transfer Inductive, Radio, Optical, and Supersonic Power Transfer, CRC-Taylor & Francis Group, New York, 2024,
    | BibTex
  • N.B.C. Carvalho, A. G. Georgiadis, Wireless Power Transmission for Sustainable Electronics, John Wiley & Sons, New Jersey, 2020,
    | BibTex
  • N.B.C. Carvalho, RGG Gomez-Garcia, AC Cidronali, White Space Communication Technologies, Cambridge University Press, London, 2014,
    | BibTex
  • N.B.C. Carvalho, D. Schreurs, Microwave and Wireless Measurement Techniques, Cambridge University Press, London, 2013,
    | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Intermodulation in Microwave and Wireless Circuits, ---, Artech House, Norwood, MA, USA, 2003,
    | BibTex
12Books Chapters
  • D. Matos, R. A. M. Pereira, D. Belo, H. Ribeiro, N.B.C. Carvalho, Radiative Wireless Power Transfer, Chapter in, Far-Field Wireless Power Transfer and Energy Harvesting, Artech House, Norwood, 2023
  • S. Daskalakis, R. Correia, J. Kimionis, G. Goussetis, MT Tentzeris, A. G. Georgiadis, N.B.C. Carvalho, Ambient FM Backscattering Low-Cost and Low-Power Wireless RFID Applications, Chapter in, Wireless Power Transmission for Sustainable Electronics: COST WiPE - IC1301, Wiley, Hoboken, 2020
  • P. Pinho, D. Belo, R. Correia, N.B.C. Carvalho, Backscatter a solution for IoT devices, Chapter in, Wireless Power Transmission for Sustainable Electronics: COST WiPE - IC1301, Wiley, London, 2020
  • R. Correia, D. Belo, N.B.C. Carvalho, Internet of Things, Chapter in, Recent Wireless Power Transfer Technologies via Radio Waves, River Publishers, Kyoto, 2018
  • N.B.C. Carvalho, Frontiers of Research and Development and Practical Application of Wireless Power Transmission Technology Frontiers of Research and Development of Wireless Power Transfer, Chapter in, Frontiers of Research and Development and Practical Application of Wireless Power Transmission Technology Frontiers of Research and Development of Wireless Power Transfer, Naoki Shinohara, CMC Publishing, Tokyo, 2016
  • A. Morgado, P.M. Cruz, N.B.C. Carvalho, White Space Technology, the Background, Chapter in, White Space Communications Technologies, N.B. Carvalho, A. Cidronali and R.G. Garcia, Cambridge University Press, Cambridge, UK, 2014
  • A. Boaventura, R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Unconventional RFID Systems, Chapter in, Green RFID Systems, Luca Roselli, Cambridge University Press, 2013
  • P.M. Cruz, N.B.C. Carvalho, Characterization of Software Defined and Cognitive Radio Front-Ends for Multi-mode Operation, Chapter in, Microwave and Millimeter Wave Circuits and Systems: Emerging Design, Technologies and Applications, A. Georgiadis, H. Rogier, L. Roselli and P. Arcioni, Wiley, Chichester, UK, 2012
  • g Bonifácio, P.S André, N.B.C. Carvalho, RESONANT WIRELESS POWER TRANSMISSION, Chapter in, Advances in Energy Research – Volume 8, Morena V. Acosta, Nova Publisher, New york, 2011
  • P.M. Cruz, H. Gomes, N.B.C. Carvalho, Receiver Front-End Architectures - Analysis and Evaluation, Chapter in, Advanced Microwave and Millimeter Wave Technologies Semiconductor Devices Circuits and Systems, Moumita Mukherjee, In-Tech, Austria, 2010
  • J. C. Pedro, N.B.C. Carvalho, Mixed Time and Frequency Domain Behavioral Modeling and Simulation, Chapter in, Fundamentals of Nonlinear Behavioral Modeling - Foundations and Applications, J. Wood and D. Root, Artech House, Norwood, 2005
  • N.B.C. Carvalho, Nonlinear Distortion Measurement Techniques, Chapter in, Characterization and Modelling Approaches for Advanced Linearisation Techniques, José Angel Garcia, Springer, India, 2005
151Papers in Journals
Early Access
  • R. A. M. Pereira, A. Baghel, N.B.C. Carvalho, Focusing Microwave Radiation for Long-Distance Wireless Power Transfer in Space, IEEE Microwave Magazine, Vol., No., pp. -, November, 2024 | BibTex
  • A. Baghel, H. C. Chaves, V. Oliveira, P. Pinho, N.B.C. Carvalho, A novel portable anechoic chamber using ultra-thin 2D microwave absorber for industrial 5.0, Scientific Reports, Vol. 14, No. 1, pp. -, March, 2024,
    | Abstract     | Full text (PDF 4 MBs) | BibTex
Published
  • A. Piacibello, RJCF Figueiredo, R. Quaglia, R. Giofre, P. Colantonio, N.B.C. Carvalho, V. Camarchia, Design and Extensive NPR Characterization of a Highly Linear SatCom GaN MMIC Doherty PA, IEEE Transactions on Microwave Theory and Techniques, Vol. 73, No. 1, pp. 156 - 166, October, 2024 | BibTex
  • A. Navarro, N.B.C. Carvalho, A Low-Cost Embedded System to Support Broadcasting Emergency Messages Through FM Radio Stations, IEEE Embedded Systems Letters, Vol. 16, No. 3, pp. 247 - 250, September, 2024,
    | Abstract     | BibTex
  • P. Capitão, P. Pinho, N.B.C. Carvalho, Reconfigurable IoT Solution for Train Integrity and Monitoring, IEEE Internet of Things Journal, Vol. 11, No. 12, pp. 22257 - 22268, June, 2024 | BibTex
  • N.B.C. Carvalho, RJCF Figueiredo, High-Gain and High-Linearity MMIC GaN Doherty Power Amplifier With 3-GHz Bandwidth for Ka-Band Satellite Communications, IEEE Microwave and Wireless Technology Letters, Vol. 34, No. 6, pp. 765 - 768, June, 2024 | BibTex
  • H. Ribeiro, N.B.C. Carvalho, A Wireless Motion Sensor Operating Down to −28-dBm Energy Harvesting, IEEE Journal of Radio Frequency Identification, Vol. 8, No. 8, pp. 176 - 184, March, 2024 | BibTex
  • S.I. Lopes, F. S. Silva, P. Pinho, P. M. Marques, N.B.C. Carvalho, CoViS: A Contactless Health Monitoring System for the Nursing Home, IEEE Access, Vol. 12, No. 12, pp. 20802 - 20821, January, 2024,
    | Abstract     | BibTex
  • N.B.C. Carvalho, MTT-S Back to Business [President’s Column], IEEE Microwave Magazine, Vol. 24, No. 12, pp. 8 - 13, December, 2023 | BibTex
  • N.B.C. Carvalho, Chapter Increase and Membership Engagement [President’s Column], IEEE Microwave Magazine, Vol. 24, No. 11, pp. 9 - 10, November, 2023 | BibTex
  • P. Rito, A. Almeida, A. F. Figueiredo, C. Gomes, P. T. Teixeira, R. Rosmaninho, R. Lopes, D. Dias, G. P. Perna, M. Silva, C Senna, D. Raposo, M. Luís, S. Sargento, A. Oliveira, N.B.C. Carvalho, Aveiro Tech City Living Lab: A Communication, Sensing, and Computing Platform for City Environments, IEEE Internet of Things Journal, Vol. 10, No. 15, pp. 13489 - 13510, August, 2023 | BibTex
  • S. S. Pereira, L. F. M. A. F. M. Almeida, Daniel C. Dinis Dinis, A. Oliveira, P. Monteiro, N.B.C. Carvalho, Frequency-Agile Real-Time All-digital Transmitter with 1 GHz of Bandwidth, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 70, No. 8, pp. 2844 - 2848, August, 2023 | BibTex
  • S. S. Pereira, L. F. M. A. F. M. Almeida, Rui F. Cordeiro Cordeiro, A. Oliveira, P. Monteiro, N.B.C. Carvalho, Scalable Resource Optimized LUT-Based All-Digital Transmitter, IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 70, No. 8, pp. 3212 - 3220, August, 2023 | BibTex
  • K. Niotaki, N.B.C. Carvalho, A. G. Georgiadis, X. Gu, S. Hemour, K. Wu, D. Matos, D. Belo, R. A. M. Pereira, RJCF Figueiredo, H. C. Chaves, B. Mendes, RF Energy Harvesting and Wireless Power Transfer for Energy Autonomous Wireless Devices and RFIDs, IEEE Journal of Microwaves, Vol. 3, No. 2, pp. 763 - 782, April, 2023 | BibTex
  • V. Palazzi, R. Correia, X. Gu, S. Hemour, K. Wu, A. Costanzo, D. Masotti, E. Fazzini, A. G. Georgiadis, H. Kazemi, R. A. M. Pereira, N. Shinohara, D. Schreurs, J. Chiao, A. Takacs, D. Dragomirescu, N.B.C. Carvalho, Radiative Wireless Power Transfer: Where We Are and Where We Want to Go, IEEE Microwave Magazine, Vol. 24, No. 2, pp. 57 - 79, February, 2023 | BibTex
  • N.B.C. Carvalho, New Challenges for MTT Members—Increase the Value of Our Membership Worldwide [President’s Column], IEEE Microwave Magazine, Vol. 24, No. 2, pp. 10 - 12, February, 2023 | BibTex
  • D. Matos, R. Correia, H. T. P. Silva Silva, H. Silva, A. Oliveira, N.B.C. Carvalho, On the Performance of Square, Rectangular, Star, and Hexagonal QAM for Backscatter Systems, IEEE Microwave and Wireless Technology Letters, Vol. 33, No. 1, pp. 102 - 105, January, 2023,
    | Abstract     | BibTex
  • L. F. M. A. F. M. Almeida, S. S. Pereira, J. M. D. D. Domingues, A. Oliveira, N.B.C. Carvalho, Moving NFV Toward the Antenna Through FPGA-Based Hardware Reconfiguration, IEEE Communications Letters, Vol. 27, No. 1, pp. 342 - 346, January, 2023,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • H. Rahmani, D. Shetty, M. Wagih, Y. Ghasempour, V. Palazzi, N.B.C. Carvalho, R. Correia, A. Costanzo, D. Vital, F.A. Alimenti, J. Kettle, D. Masotti, P. M. Mezzanotte, L.R. Roselli, J. Grosinger, Next-Generation IoT Devices: Sustainable Eco-Friendly Manufacturing, Energy Harvesting, and Wireless Connectivity, IEEE Journal of Microwaves, Vol. 3, No. 1, pp. 237 - 255, January, 2023 | BibTex
  • C. Gouveia, N.B.C. Carvalho, R. Correia, C. Loss, P. Pinho, R. Torres, Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap, IEEE Journal of Microwaves, Vol. --, No. --, pp. 1 - 34, December, 2022 | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, Quasioptics for increasing the beam efficiency of wireless power transfer systems, Scientific Reports, Vol. 12, No. 1, pp. 20894 - 20894, December, 2022 | BibTex
  • Tagleorge M. Silveira, P. Pinho, N.B.C. Carvalho, Harmonic RFID Temperature Sensor Design for Harsh Environments, IEEE Microwave and Wireless Components Letters, Vol. 32, No. 10, pp. 1239 - 1242, October, 2022,
    | Abstract     | Full text (PDF 922 KBs) | BibTex
  • R. Correia, T. Varum, J. N. Matos, A. Oliveira, N.B.C. Carvalho, User Terminal Segments for Low-Earth Orbit Satellite Constellations: Commercial Systems and Innovative Research Ideas, IEEE Microwave Magazine, Vol. 23, No. 10, pp. 47 - 58, October, 2022 | BibTex
  • A. Piacibello, R. Giofre, R. Quaglia, RJCF Figueiredo, N.B.C. Carvalho, P. Colantonio, V. Valenta, V. Camarchia, A 5-W GaN Doherty Amplifier for Ka-Band Satellite Downlink With 4-GHz Bandwidth and 17-dB NPR, IEEE Microwave and Wireless Components Letters, Vol. 32, No. 8, pp. 964 - 967, August, 2022 | BibTex
  • D. Matos, H. Almeida, N.B.C. Carvalho, Pioneering evaluation of GaN transistors in geostationary satellites, Scientific Reports, Vol. 12, No. 1, pp. 1 - 8, July, 2022 | BibTex
  • D. Matos, R. A. M. Pereira, D. Belo, A. Oliveira, N.B.C. Carvalho, Charging Mobile Devices in Indoor Environments, Energies, Vol. 15, No. 9, pp. 3450 - 3450, May, 2022 | BibTex
  • D. Macario, N.B.C. Carvalho, P. Pinho, H. Alves, Harvesting circuits for triboelectric nanogenerators for wearable applications, iScience, Vol. 25, No. 4, pp. 103977 - 103977, April, 2022,
    | Abstract     | BibTex
  • P. Bouça, RJCF Figueiredo, A. wlodarkiewicz, A. Tkach, J. N. Matos, P. V. Vilarinho, N.B.C. Carvalho, Design and Characterization of Novel Barium Strontium Titanate Thick Films for Sub-6 GHz RF Applications, IEEE Transactions on Microwave Theory and Techniques, Vol. 1, No. 1, pp. 1 - 1, November, 2021,
    | Abstract     | Full text (PDF 4 MBs) | BibTex
  • R. Torres, R. Correia, N.B.C. Carvalho, S. Daskalakis, G. Goussetis, Y. Ding, A. G. Georgiadis, A. Eid, JH Hester, M. Tentzeris, Backscatter Communications, IEEE Journal of Microwaves, Vol. 1, No. 4, pp. 864 - 878, September, 2021 | Full text (PDF 5 MBs) | BibTex
  • RJCF Figueiredo, N.B.C. Carvalho, A. Piacibello, V. Camarchia, Nonlinear Dynamic RF System Characterization: Envelope Intermodulation Distortion Profiles—A Noise Power Ratio-Based Approach, IEEE Transactions on Microwave Theory and Techniques, Vol. 69, No. 9, pp. 4256 - 4271, September, 2021 | Full text (PDF 3 MBs) | BibTex
  • G. V. R. X. Xavier, H. Silva, E. G. C Costa, A. J. R. S. Serres, N.B.C. Carvalho, A. Oliveira, Detection, Classification and Location of Sources of Partial Discharges Using the Radiometric Method: Trends, Challenges and Open Issues, IEEE Access, Vol. 9, No. 2021, pp. 110787 - 110810, August, 2021 | Full text (PDF 3 MBs) | BibTex
  • M. Jordão, D. Pires, D. Belo, P. Pinho, N.B.C. Carvalho, 3D Antenna Characterization for WPT Applications, Sensors, Vol. 21, No. 13, pp. 4461 - 4461, June, 2021 | Full text (PDF 5 MBs) | BibTex
  • M. Jordão, R. F. S. Caldeirinha, A. Oliveira, N.B.C. Carvalho, A Survey on Over-The-Air Linearization Methods for MIMO Systems, Energies, Vol. 14, No. 8, pp. 2225 - 2225, April, 2021 | Full text (PDF 2 MBs) | BibTex
  • A. Oliveira, N.B.C. Carvalho, J. R. B. S. Santos, A. Boaventura, R. Cordeiro, A.P. Prata, DACD Dinis, All-Digital RFID Readers: An RFID Reader Implemented on an FPGA Chip and/or Embedded Processor, IEEE Microwave Magazine, Vol. 22, No. 3, pp. 18 - 24, March, 2021 | Full text (PDF 1 MB) | BibTex
  • M. Jordão, D. Belo, R. F. S. Caldeirinha, A. Oliveira, N.B.C. Carvalho, Active reflection coefficients characterization system for multiple input multiple output antennas, IET Microwaves, Antennas and Propagation, Vol. 15, No. 5, pp. 511 - 520, March, 2021 | Full text (PDF 1 MB) | BibTex
  • D. Matos, R. Correia, N.B.C. Carvalho, Dual-Band FET-Based Reflection Amplifier for Backscatter Modulator Performance Enhancement, ursi radio science letters, Vol. 3, No. 1, pp. 1 - 4, March, 2021 | BibTex
  • D. Matos, M. Jordão, R. Correia, N.B.C. Carvalho, Millimeter-Wave BiCMOS Backscatter Modulator for 5G-IoT Applications, IEEE Microwave and Wireless Components Letters, Vol. 31, No. 2, pp. 173 - 176, February, 2021 | Full text (PDF 1 MB) | BibTex
  • D. Matos, R. Correia, N.B.C. Carvalho, Millimeter-Wave Hybrid RF-DC Converter based on a GaAs Chip for IoT-WPT Applications, IEEE Microwave and Wireless Components Letters, Vol. 31, No. 6, pp. 787 - 790, February, 2021 | Full text (PDF 1 MB) | BibTex
  • M. Jordão, D. Belo, R. F. S. Caldeirinha, A. Oliveira, N.B.C. Carvalho, Over-the-Air Calibration of Active Antenna Arrays Using Multisine, IEEE Transactions on Microwave Theory and Techniques, Vol. 69, No. 1, pp. 431 - 442, January, 2021 | Full text (PDF 5 MBs) | BibTex
  • U.G. Gustavsson, P. F. Frenger, C. Fager, T. Eriksson, H. Zirath, F. Dielacher, C. Studer, A. Pärssinen, R. Correia, J. N. Matos, D. Belo, N.B.C. Carvalho, Implementation Challenges and Opportunities in Beyond-5G and 6G Communication, IEEE Journal of Microwaves, Vol. 1, No. 1, pp. 86 - 100, January, 2021 | BibTex
  • F. Pereira, R. Correia, P. Pinho, S.I. Lopes, N.B.C. Carvalho, Challenges in Resource-Constrained IoT Devices: Energy and Communication as Critical Success Factors for Future IoT Deployment, Sensors, Vol. 20, No. 22, pp. 6420 - 6420, November, 2020 | BibTex
  • F. Pereira, S.I. Lopes, N.B.C. Carvalho, A. Curado, RnProbe: A LoRa-Enabled IoT Edge Device for Integrated Radon Risk Management, IEEE Access, Vol. 8, No. -, pp. 203488 - 203502, November, 2020 | Full text (PDF 2 MBs) | BibTex
  • Y. Ding, R. Lihakanga, R. Correia, G. Goussetis, N.B.C. Carvalho, Harmonic Suppression in Frequency Shifted Backscatter Communications, IEEE Open Journal of the Communications Society, Vol. 1, No. 1, pp. 990 - 999, July, 2020 | BibTex
  • F. Pereira, R. Correia, M. Luís, S. Sargento, M. Jordão, L. F. M. A. F. M. Almeida, C Senna, A. Oliveira, N.B.C. Carvalho, When Backscatter Communication Meets Vehicular Networks: Boosting Crosswalk Awareness, IEEE Access, Vol. 8, No. 1, pp. 34507 - 34521, February, 2020 | BibTex
  • M. Jordão, P.M. Cruz, D. Ribeiro, A.P. Prata, N.B.C. Carvalho, M. Bossche, Mixed-Signal SoC Characterization for Future 5G DPD Applications [Application Notes], IEEE Microwave Magazine, Vol. 21, No. 2, pp. 14 - 23, February, 2020 | BibTex
  • P. Bouça, J. N. Matos, S. Cunha, N.B.C. Carvalho, Low-Profile Aperture-Coupled Patch Antenna Array for CubeSat Applications, IEEE Access, Vol. 8, No. 19313781, pp. 20473 - 20479, January, 2020 | BibTex
  • M. Jordão, R. Correia, N.B.C. Carvalho, Characterisation and implementation of high-order backscatter modulation for IoT applications, IET Microwaves, Antennas and Propagation, Vol. 13, No. 15, pp. 2636 - 2640, December, 2019 | BibTex
  • D. Belo, R. Correia, Y. Ding, S. Daskalakis, G. Goussetis, A. G. Georgiadis, N.B.C. Carvalho, IQ Impedance Modulator Front-End for Low-Power LoRa Backscattering Devices, IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 12, pp. 5307 - 5314, December, 2019 | BibTex
  • D. Belo, D. Ribeiro, P. Pinho, N.B.C. Carvalho, A Selective, Tracking, and Power Adaptive Far-Field Wireless Power Transfer System, IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 9, pp. 3856 - 3866, September, 2019 | BibTex
  • G. Rosa, N.B.C. Carvalho, Electromagnetic Field Probe for Microwave Ovens, IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 8, pp. 3330 - 3338, August, 2019 | BibTex
  • P. Pinho, N.B.C. Carvalho, Evaluation of Planar Elliptical Antenna Array with Inner Counter-Elliptical Slot, Radioengineering, Vol. 27, No. 4, pp. 937 - 941, December, 2018 | BibTex
  • R. Correia, D. Belo, F. Pereira, M. Jordão, N.B.C. Carvalho, Backscatter Modulation for Wearable Devices: A Backscatter Modulator, Consisting of an Antenna and a 1-MHz Binary Backscatter Modulator Operating at a Carrier Frequency of 915 MHz, IEEE Microwave Magazine, Vol. 20, No. 1, pp. 78 - 84, December, 2018 | BibTex
  • S. Daskalakis, R. Correia, G. Goussetis, MT Tentzeris, N.B.C. Carvalho, A. G. Georgiadis, Four-PAM Modulation of Ambient FM Backscattering for Spectrally Efficient Low-Power Applications, IEEE Transactions on Microwave Theory and Techniques, Vol. 66, No. 12, pp. 5909 - 5921, December, 2018 | BibTex
  • F. Alimenti, V. Palazzi, C. M. Mariotti, P. M. Mezzanotte, R. Correia, N.B.C. Carvalho, L.R. Roselli, Smart Hardware for Smart Objects: Microwave Electronic Circuits to Make Objects Smart, IEEE Microwave Magazine, Vol. 19, No. 6, pp. 48 - 68, September, 2018 | BibTex
  • J. P. Borrego, RGG Gomez-Garcia, N.B.C. Carvalho, M. A. S. S. Sánchez-Soriano, J. Vieira, Coexistence Without Interference: Interference Mitigation on DVB-T Reception Caused by Neutral Systems Operating in the Digital Dividend Band, IEEE Microwave Magazine, Vol. 19, No. 4, pp. 29 - 43, June, 2018 | BibTex
  • M. Jordão, R. Correia, N.B.C. Carvalho, Multi-Sine Channel Optimization for RF-to-dc Performance Characterization, URSI Radio Science Bulletin, Vol. 2018, No. 364, pp. 39 - 44, March, 2018 | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, J. P. C. da Cunha, Quasi-optical analysis of a double reflector microwave antenna system, Wireless Power Transfer, Vol. 5, No. 2, pp. 75 - 86, March, 2018 | BibTex
  • N. Pan, D. Belo, M. Rajabi, D. Schreurs, N.B.C. Carvalho, S. Pollin, Bandwidth Analysis of RF-DC Converters Under Multisine Excitation, IEEE Transactions on Microwave Theory and Techniques, Vol. 66, No. 2, pp. 791 - 802, February, 2018 | BibTex
  • R. Correia, N.B.C. Carvalho, Ultrafast Backscatter Modulator With Low-Power Consumption and Wireless Power Transmission Capabilities, IEEE Microwave and Wireless Components Letters, Vol. 27, No. 12, pp. 1152 - 1154, December, 2017 | BibTex
  • R. Cordeiro, A.P. Prata, A. Oliveira, J. Vieira, N.B.C. Carvalho, Agile All-Digital RF Transceiver Implemented in FPGA, IEEE Transactions on Microwave Theory and Techniques, Vol. 65, No. 11, pp. 4229 - 4240, November, 2017 | BibTex
  • F. Pereira, R. Correia, N.B.C. Carvalho, Passive Sensors for Long Duration Internet of Things Networks, Sensors, Vol. 17, No. 10, pp. 2268 - 2268, October, 2017,
    | Abstract     | BibTex
  • A.P. Prata, J. Santos, A. Oliveira, N.B.C. Carvalho, Agile All-Digital DPD Feedback Loop, IEEE Transactions on Microwave Theory and Techniques, Vol. 65, No. 7, pp. 2476 - 2484, July, 2017,
    | Abstract     | BibTex
  • N.B.C. Carvalho, P. Pinho, A. Boaventura, P.M. Cruz, R. D. Fernandes, R. Gonçalves, D. Belo, urope and the Future for WPT : European Contributions to Wireless Power Transfer Technology, IEEE Microwave Magazine, Vol. 18, No. 4, pp. 56 - 87, June, 2017,
    | Abstract     | BibTex
  • M. Jordão, P.M. Cruz, D. Ribeiro, A.P. Prata, N.B.C. Carvalho, M. Bossche, D. Vye, Mixed-Signal Instrumentation for Design and Test of 5G Systems, Microwave Journal, Vol. 60, No. 4, pp. 98 - 111, April, 2017 | BibTex
  • R. Correia, A. Boaventura, N.B.C. Carvalho, Quadrature Amplitude Backscatter Modulator for Passive Wireless Sensors in IoT Applications, IEEE Transactions on Microwave Theory and Techniques, Vol. 65, No. 4, pp. 1103 - 1110, February, 2017 | BibTex
  • R. Gonçalves, P. Pinho, N.B.C. Carvalho, Small antenna design for very compact devices and wearables, IET Microwaves, Antennas and Propagation, Vol. --, No. --, pp. 1 - 12, January, 2017 | BibTex
  • A.P. Prata, D. Ribeiro, P.M. Cruz, A. Oliveira, N.B.C. Carvalho, RF Subsampling Feedback Loop Technique for Concurrent Dual-Band PA Linearization, IEEE Transactions on Microwave Theory and Techniques, Vol. 64, No. 12, pp. 1 - 9, December, 2016 | BibTex
  • R. Gonçalves, P. Pinho, N.B.C. Carvalho, Wireless energy transfer: Dielectric lens antennas for beam shaping in wireless power-transfer applications, Comptes Rendus Physique, Vol. 1, No. 1, pp. 1 - 1, December, 2016,
    | Abstract     | BibTex
  • N.B.C. Carvalho, J. Santos, A. Oliveira, A. Boaventura, Perfect Isolation: Dealing with Self-Jamming in Passive RFID Systems, IEEE Microwave Magazine, Vol. 17, No. 11, pp. 20 - 39, November, 2016,
    | Abstract     | Full text (PDF 5 MBs) | BibTex
  • R. Correia, N.B.C. Carvalho, S. Kawasaki, Continuously Power Delivering for Passive Backscatter Wireless Sensor Networks, IEEE Transactions on Microwave Theory and Techniques, Vol. 64, No. 11, pp. 3723 - 3731, September, 2016 | BibTex
  • J. Santos, DACD Dinis, D. Riscado, G. Anjos, D. Belo, A. Oliveira, P. Monteiro, N.B.C. Carvalho, A flexible physical layer and fronthaul research testbed for C-RAN, Microprocessors and Microsystems, Vol. 00, No. 00, pp. 1 - 11, September, 2016,
    | Abstract     | BibTex
  • W. Jang, R. Cordeiro, A. Oliveira, N.B.C. Carvalho, A Broadband Almost-Digital Radio Frequency Transmitter with an Efficient Power Amplifier, IEEE Transactions on Microwave Theory and Techniques, Vol. 64, No. 5, pp. 1526 - 1534, May, 2016,
    | Abstract     | BibTex
  • P. Pinho, N.B.C. Carvalho, T.M. Moura, High-efficiency D-TV energy harvesting system for low-input power, Wireless Power Transfer, Vol. 3, No. 1, pp. 34 - 42, March, 2016,
    | Abstract     | BibTex
  • R. Gonçalves, R. L. Magueta, P. Pinho, N.B.C. Carvalho, Dissipation Factor and Permittivity Estimation of Dielectric Substrates Using a Single Microstrip Line Measurement, Applied Computational Electromagnetics Society Journal, Vol. 31, No. 2, pp. 118 - 125, February, 2016 | BibTex
  • R. Gonçalves, S.R. Rima, R. M. Magueta, P. Pinho, A.C. Collado, A. G. Georgiadis, JH Hester, N.B.C. Carvalho, MT Tentzeris, RFID-Based Wireless Passive Sensors Utilizing Cork Materials, IEEE Sensors Journal, Vol. 15, No. 12, pp. 7242 - 7251, December, 2015,
    | Abstract     | BibTex
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Resonant Electrical Coupling: Circuit Model and First Experimental Results, IEEE Transactions on Microwave Theory and Techniques, Vol. 63, No. 9, pp. 2983 - 2990, September, 2015 | BibTex
  • D. Ribeiro, A.P. Prata, P.M. Cruz, N.B.C. Carvalho, D-Parameters: A Novel Framework for Characterization and Behavioral Modeling of Mixed-Signal Systems, IEEE Transactions on Microwave Theory and Techniques, Vol. PP, No. 99, pp. 1 - 11, September, 2015,
    | Abstract     | BibTex
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Low-power ultra-wide band pulse generator based on a PIN diode, IET Microwaves, Antennas and Propagation, Vol. 9, No. 11, pp. 1230 - 1232, August, 2015 | BibTex
  • S.I. Lopes, J. Vieira, J.R. Reis, N.B.C. Carvalho, Accurate smartphone indoor positioning using a WSN infrastructure and non-invasive audio for TDoA estimation, Pervasive and Mobile Computing, Vol. 20, No. 0, pp. 29 - 46, July, 2015 | BibTex
  • A. Boaventura, D. Belo, R. D. Fernandes, A.C. Collado, A. G. Georgiadis, N.B.C. Carvalho, Boosting the Efficiency: Unconventional Waveform Design for Efficient Wireless Power Transfer, IEEE Microwave Magazine, Vol. 16, No. 3, pp. 87 - 96, March, 2015 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Improving dynamic range of software-defined radio receivers for multi-carrier wireless systems, IET Microwaves, Antennas and Propagation, Vol. 9, No. 1, pp. 16 - 23, January, 2015,
    | Abstract     | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Synchronous Oversampled Measurements for the Extraction of Mixed-Signal Behavioral Models in Digital to Analog Integrated Transmitters, IEEE Transactions on Microwave Theory and Techniques, Vol. 62, No. 12, pp. 3183 - 3192, December, 2014,
    | Abstract     | BibTex
  • L.R. Roselli, N.B.C. Carvalho, F.A. Alimenti, P. M. Mezzanotte, G.O. Orecchini, M. V. Virili, C. M. Mariotti, R. Gonçalves, P. Pinho, Smart Surfaces: Large Area Electronics Systems for Internet of Things Enabled by Energy Harvesting, Proceedings of the IEEE, Vol. 102, No. 11, pp. 1723 - 1746, November, 2014 | BibTex
  • R. Gonçalves, A. D. Duarte, R. M. Magueta, N.B.C. Carvalho, P. Pinho, RFID tags on paper substrate for bottle labelling, Procedia Technology, Vol. 17, No. 1, pp. 65 - 72, November, 2014 | BibTex
  • W. Jang, N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Analysis on in-band distortion caused by switching amplifiers, IET Microwaves, Antennas and Propagation, Vol. 8, No. 5, pp. 351 - 357, April, 2014,
    | Abstract     | BibTex
  • A. Boaventura, A.C. Collado, N.B.C. Carvalho, A. G. Georgiadis, Spatial Power Combining of Multi-Sine Signals for Wireless Power Transmission applications, IEEE Transactions on Microwave Theory and Techniques, Vol. 62, No. 4, pp. 1022 - 1030, April, 2014 | BibTex
  • N.B.C. Carvalho, A. Boaventura, Wireless Power Transmission: R&D Activities Within Europe, IEEE Transactions on Microwave Theory and Techniques, Vol. 62, No. 4, pp. 1031 - 1045, April, 2014 | BibTex
  • R. Emrick, P.M. Cruz, N.B.C. Carvalho, S. Gao, R. Quay, P. Waltereit, The Sky´s the Limit: Key Technologies and Market Trends in Satellite, IEEE Microwave Magazine, Vol. 15, No. 2, pp. 65 - 78, March, 2014,
    | Abstract     | BibTex
  • J. Vieira, RGG Gomez-Garcia, JPM Magalhães, N.B.C. Carvalho, Filling the Spectral Holes: Novel/Future Wireless Communications and Radar Receiver Architectures, IEEE Microwave Magazine, Vol. 15, No. 2, pp. 45 - 56, March, 2014 | BibTex
  • A.P. Prata, N.B.C. Carvalho, A. Oliveira, An Agile Digital Radio System for UHF White Spaces, IEEE Microwave Magazine, Vol. 15, No. 1, pp. 92 - 97, January, 2014 | BibTex
  • J. Vieira, E. Bolas, N.B.C. Carvalho, Opportunistic Usage of Maritime VHF Band—Deployment Challenges for a New Regulatory Framework, Wireless Engineering and Technology, Vol. 05, No. 01, pp. 1 - 10, January, 2014 | BibTex
  • L. Brás, P. Pinho, N.B.C. Carvalho, Evaluation of a Sectorised Antenna in an Indoor Localization System, IET Microwaves, Antennas and Propagation, Vol. 7, No. 8, pp. 679 - 685, June, 2013,
    | Abstract     | BibTex
  • P.M. Cruz, N.B.C. Carvalho, M.E. Valkama, Multi-Stage Mixed Frequency-Time Simulator for Bandpass Sampling Receiver Front-Ends, i-ETC : ISEL Academic Journal of Electronics, Telecomunications and Computers, Vol. 2, No. 1, pp. 1 - 8, June, 2013,
    | Abstract     | BibTex
  • W. Jang, N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Designing Harmonic-Controlled Drivers for Switching Power Amplifiers, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 60, No. 5, pp. 247 - 251, May, 2013 | BibTex
  • J. Vieira, JPM Magalhães, N.B.C. Carvalho, RGG Gomez-Garcia, Bio-Inspired Hybrid Filter Bank for Software-Defined Radio Receivers, IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 4, pp. 1455 - 1466, April, 2013,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • A. Boaventura, A.C. Collado, N.B.C. Carvalho, A. G. Georgiadis, Optimum Behavior: Wireless power transmission system design through behavioral models and efficient synthesis techniques, IEEE Microwave Magazine, Vol. 14, No. 2, pp. 26 - 35, March, 2013 | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Modeling and Simulation of a Reflective Semiconductor Optical Amplifier Modulator Using X-Parameters®, IEEE Photonics Technology Letters, Vol. 25, No. 3, pp. 272 - 274, February, 2013 | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Wideband Dynamic Behavioral Modeling of Reflective Semiconductor Optical Amplifiers Using a Tapped-Delay Multilayer Perceptron, Optics Express, Vol. 21, No. 3, pp. 3354 - 3362, February, 2013 | BibTex
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Design and Optimization of Flexible and Coding Efficient All-Digital RF Transmitters, IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 1, pp. 625 - 632, January, 2013,
    | Abstract     | BibTex
  • A. Boaventura, N.B.C. Carvalho, Extending Reading Range of Commercial RFID Readers, IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 1, pp. 48 - 57, January, 2013,
    | Abstract     | BibTex
  • R. Gonçalves, P. Pinho, N.B.C. Carvalho, Compact, Frequency Reconfigurable, Printed Monopole Antenna, International Journal of Antennas and Propagation, Vol. 2012, No. 2012, pp. 1 - 6, November, 2012 | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, L. K. Kulas, K. N. Nyka, A Review of Antennas for Indoor Positioning Systems, International Journal of Antennas and Propagation, Vol. 2012, No. 953269, pp. 1 - 14, October, 2012,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • M. Cascalheira, P. Pinho, N.B.C. Carvalho, Indoor Guidance System for the Blind and the Visually Impaired, IET Microwaves, Antennas and Propagation, Vol. 6, No. 10, pp. 1149 - 1157, July, 2012 | BibTex
  • N.V.S. Silva, A. Oliveira, U.G. Gustavsson, N.B.C. Carvalho, A Novel All-Digital Multichannel Multimode RF Transmitter Using Delta-Sigma Modulation, IEEE Microwave and Wireless Components Letters, Vol. 22, No. 3, pp. 156 - 158, March, 2012,
    | Abstract     | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Analysis on Dynamic Characteristics of Reflective Semiconductor Optical Amplifier Based on a Memory Polynomial Model, Microwave and Optical Tech. Letters, Vol. 54, No. 3, pp. 805 - 808, March, 2012,
    | Abstract     | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Pentagonal Patch-Excited Sectorized Antenna for Localization Systems, IEEE Transactions on Antennas and Propagation, Vol. 60, No. 3, pp. 1634 - 1638, March, 2012,
    | Abstract     | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Digital Predistortion for RSOAs as External Modulators in Radio over Fiber Systems, Optics Express, Vol. 19, No. 18, pp. 17641 - 17646, August, 2011,
    | Abstract     | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Wideband Behavioral Model for Nonlinear Operation of Bandpass Sampling Receivers, IEEE Transactions on Microwave Theory and Techniques, Vol. 59, No. 4, pp. 1006 - 1015, April, 2011,
    | Abstract     | BibTex
  • H. Gomes, N.B.C. Carvalho, A. R. T. Testera, M. B. Barciela, K. R. Remley, Diode Power Probe Measurements of Wireless Signals, IEEE Transactions on Microwave Theory and Techniques, Vol. 59, No. 4, pp. 987 - 997, April, 2011 | BibTex
  • N.B.C. Carvalho, MTT-S Workshop Series (IMWS) and MGA Committee News [Around the Globe], IEEE Microwave Magazine, Vol. 11, No. 6, pp. 124 - 126, October, 2010 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, K. R. Remley, Designing and Testing Software-Defined Radios, IEEE Microwave Magazine, Vol. 11, No. 4, pp. 83 - 94, June, 2010,
    | Abstract     | BibTex
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Towards a New Baseband Processing Architecture for Next Generation Software-Defined Radio, Electrónica e Telecomunicações, Vol. 5, No. 2, pp. 167 - 171, June, 2010 | BibTex
  • N.B.C. Carvalho, Power amplifier linearisation behaviour in the presence of dynamic effects, IET Microwaves, Antennas and Propagation, Vol. 4, No. 1, pp. 113 - 120, January, 2010,
    | Abstract     | Full text (PDF 514 KBs) | BibTex
  • R. S. Santos, N.B.C. Carvalho, Characterization of SNDR Degradation in Nonlinear Wireless Transmitters, Intrnl. Journal of RF and Microwave Computer-Aided Engineering, Vol. 19, No. 4, pp. 470 - 480, July, 2009,
    | Abstract     | Full text (PDF 520 KBs) | BibTex
  • H. Gomes, N.B.C. Carvalho, RFID for Location Proposes Based on the Intermodulation Distortion, Sensors & Transducers Magazine, Vol. 106, No. 7, pp. 85 - 96, July, 2009 | BibTex
  • N.B.C. Carvalho, Multisine signals for wireless system test and design, IEEE Microwave Magazine, Vol. 9, No. 3, pp. 122 - 138, June, 2008,
    | Abstract     | BibTex
  • N.B.C. Carvalho, Real World Applications - Local Positioning System Based on Artificial Neural Networks, Lecture Notes in Computer Science, Vol. 2007, No. 12, pp. 609 - 708, September, 2007 | BibTex
  • N.B.C. Carvalho, The MTT-II Web Page: A Multitude of Information Resources on Microwave Measurements, IEEE Microwave and Wireless Components Letters, Vol. 8, No. 4, pp. 106 - 114, August, 2007 | BibTex
  • J. Martins, N.B.C. Carvalho, J. C. Pedro, Intermodulation Distortion of Third-Order Nonlinear Systems With Memory Under Multisine Excitations, IEEE Transactions on Microwave Theory and Techniques, Vol. 55, No. 6, pp. 1264 - 1271, June, 2007 | BibTex
  • J. Martins, P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, A Metric for the Quantification of Memory Effects in Wireless Power Amplifiers, IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 12, pp. 4432 - 4439, December, 2006 | BibTex
  • N.B.C. Carvalho, Mini-Special Issue on Measurements for Large-Signal Characterization and Modeling of Nonlinear Analog Devices, Circuits, and Systems, IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 8, pp. 3161 - 3161, August, 2006 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, J. P. M. Martins, A corrected microwave multisine waveform generator, IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 6, pp. 2659 - 2664, June, 2006 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Nonlinear RF circuits and systems simulation when driven by several modulated signals, IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 2, pp. 572 - 579, February, 2006 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Modeling Nonlinear Memory Effects on the AM/AM, AM/PM and Two-Tone IMD in Microwave PA Circuits, Intrnl. Journal of RF and Microwave Computer-Aided Engineering, Vol. -, No. -, pp. - - -, January, 2006 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Load-impedance selection for maximized large-signal IMD sweet-spot effects, Intrnl. Journal of RF and Microwave Computer-Aided Engineering, Vol. 5, No. 15, pp. 434 - 440, September, 2005 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Nonlinear simulation of mixers for assessing system-level performance, Intrnl. Journal of RF and Microwave Computer-Aided Engineering, Vol. 15, No. 4, pp. 350 - 361, July, 2005 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, Multi-tone Phase and Amplitude Measurement for Nonlinear Device Characterization, IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 6, pp. 1982 - 1989, June, 2005 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, A unified theory for nonlinear distortion characteristics in different amplifier technologies, Microwave Journal, Vol., No., pp. -, December, 2004 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Nonlinear device model of microwave power GaN HEMTs for high-power amplifier design, IEEE Transactions on Microwave Theory and Techniques, Vol. 52, No. 11, pp. 2585 - 2592, November, 2004 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, An Integrated Overview of CAD/CAE Tools and Their Use on Wireless-Communication Circuit Design, Intrnl. Journal of RF and Microwave Computer-Aided Engineering, Vol. 14, No. 6, pp. 507 - 524, October, 2004 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, C. Fager, J. A. Garcia, Linearity Versus Efficiency in Mobile Handset Power Amplifiers: A Battle Without a Loser, Microwave Engineering Europe, Vol. 0, No. 0, pp. 19 - 26, August, 2004 | BibTex
  • P.M.L. Lavrador, N.B.C. Carvalho, J. C. Pedro, Evaluation of signal-to-noise and distortion ratio degradation in nonlinear systems, IEEE Transactions on Microwave Theory and Techniques, Vol. 52, No. 3, pp. 813 - 822, March, 2004 | BibTex
  • N.B.C. Carvalho, Medidor de Campo electromagnético selectivo na frequência para as bandas GSM900/GSM1800, Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 1, No. 1, pp. 1 - 1, January, 2004 | BibTex
  • C. Fager, J. C. Pedro, N.B.C. Carvalho, H. Zirath, F. Fortes, M. Rosário, A Comprehensive Analysis of IMD Behavior in RF CMOS Power Amplifiers, IEEE Journal of Solid-State Circuits, Vol. 39, No. 1, pp. 24 - 34, January, 2004 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Designing Multisine Excitations for Nonlinear Model Testing, IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 1, pp. 45 - 54, January, 2004 | BibTex
  • N.B.C. Carvalho, Métodos de Entrada de Texto Especialmente Projectados para Comunicações Móveis, Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 2, No. 1, pp. 1 - 1, January, 2003 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Repetidor para o Sub-Sistema Rádio da Rede UMTS, Electrónica e Telecomunicações, Vol. 3, No. 8, pp. 785 - 789, January, 2003 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, A Comprehensive Explanation of Distortion Side Band Asymmetries, IEEE Transactions on Microwave Theory and Techniques, Vol. 50, No. 9, pp. 2090 - 2101, September, 2002 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Characterizing Nonlinear RF Circuits for Their In-Band Signal Distortion, IEEE Transactions on Instrumentation and Measurement, Vol. 51, No. 9, pp. 420 - 426, June, 2002 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Large and Small Signal IMD Behavior of Microwave Power Amplifiers, IEEE Transactions on Microwave Theory and Techniques, Vol. 47, No. 12, pp. 2364 - 2374, December, 1999 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Compact Formulas to Relate ACPR and NPR to Two-Tone IMR and IP3, Microwave Journal, Vol. 42, No. 12, pp. 0 - 0, December, 1999 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Multi-tone Frequency Domain Simulation of Nonlinear Circuits in Large and Small Signal Regimes, IEEE Transactions on Microwave Theory and Techniques, Vol. 46, No. 12, pp. 2016 - 2024, December, 1998 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Alternativa ao SPICE para Simulação do Estado Estacionário de Circuitos Não Lineares, Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 1, No. 7, pp. 635 - 644, January, 1997 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Estudo das Características de Distorção Não-Linear de Intermodulação de Desmoduladores de FM por PLL, Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 1, No. 5, pp. 353 - 361, January, 1996 | BibTex
  • N.B.C. Carvalho, Controlador de Memória Dinâmica para o mP68030, Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 1, No. 5, pp. 0 - 0, January, 1996 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Projecto de Redes de Adaptação para Amplificadores de Banda Larga, Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 1, No. 4, pp. 343 - 348, September, 1995 | BibTex
  • P. Bouça, RJCF Figueiredo, J. N. Matos, P. V. Vilarinho, N.B.C. Carvalho, Reconfigurable Three Functional Dimension Single and Dual-Band SDR Front-Ends Using Thin Film BST-Based Varactors, IEEE Access, Vol. 10, No., pp. 4125 - 4136, 2022,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • V. Oliveira, P. Capitão, N.B.C. Carvalho, Railways Temperature Sensing and Monitoring Based on Passive Harmonic RFID Systems, IEEE Transactions on Microwave Theory and Techniques, Vol., No., pp. 1 - 11, 2024 | BibTex
  • H. Ribeiro, D. Matos, N.B.C. Carvalho, A. G. Georgiadis, Enhancement of RF-DC Converters Efficiency by Input Impedance Optimization, IEEE Access, Vol. 12, No., pp. 182708 - 182716, 2024,
    | Abstract     | BibTex
  • A. Baghel, V. Oliveira, P. Pinho, N.B.C. Carvalho, Bifocal Polarization Insensitive Fresnel Lens Tuning Using Lubricant Oil for MM-Wave, IEEE Journal of Microwaves, Vol. 5, No. 2, pp. 425 - 437, 2024,
    | Abstract     | BibTex
  • X. Bo, N.B.C. Carvalho, P. Pinho, M. Shen, A Low-Profile, Broadband Dual-Circularly-Polarized Bidirectional Folded Transmitarray, IEEE Antennas and Wireless Propagation Letters, Vol., No., pp. 1 - 5, 2025,
    | Abstract     | BibTex
250Papers in Conferences
  • V. Oliveira, A. Baghel, N.B.C. Carvalho, Compact PCB Antenna for 433 MHz Band: Design, Simulation, and Experimental Validation, IEEE Microwaves, Antennas and Propagation Conference MAPCON, Hyderabad, India, Vol., pp. -, December, 2024,
    | Abstract     | Full text (PDF 902 KBs) | BibTex
  • A. S. Santos, RJCF Figueiredo, N.B.C. Carvalho, Analysis of Interference in Communication Signal for Space-Based Solar Power, 18.º Congresso do Comité Português da URSI, Lisboa, Portugal, November, 2024 | BibTex
  • V. Oliveira, N.B.C. Carvalho, Design and Analysis of Circularly Polarized Antennas for CubeSats Operating at 868 MHz, 18.º Congresso do Comité Português da URSI, Lisboa, Portugal, November, 2024 | BibTex
  • V. Oliveira, N.B.C. Carvalho, Dual-Port Folded Dipole Antenna for Harmonic RFID Over Metallic Surfaces, IEEE ICEAA International Conference on Electromagnetics in Advanced Applications / IEEE APWC IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications ICEAA/IEEE APWC, Lisbon, Portugal, September, 2024 | Full text (PDF 2 MBs) | BibTex
  • A. Baghel, P. Pinho, N.B.C. Carvalho, The Airy Wave Utilization for mm-wave Wireless Power Transfer, IEEE ICEAA International Conference on Electromagnetics in Advanced Applications / IEEE APWC IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications ICEAA/IEEE APWC, Lisbon, Portugal, Vol., pp. -, September, 2024,
    | Abstract     | Full text (PDF 476 KBs) | BibTex
  • R. A. M. Pereira, B Pinho, C. Gouveia, D.F.A. Albuquerque, N.B.C. Carvalho, P. Pinho, Quasioptics in Bioradar With 2x2 Microstrip Patch Arrays and a Dielectric Lens at 5.8 GHz, IEEE International Symposium on Antennas and Propagation, Florence, Italy, July, 2024 | BibTex
  • G. Lourenço, N.B.C. Carvalho, Detection and Classification of Wideband RF Signals in Harsh Environments Using FPGA-Accelerated Deep Learning Networks, Jornadas Sobre Sistemas Reconfiguráveis REC2024, Aveiro, Portugal, June, 2024,
    | Abstract     | BibTex
  • H. C. Chaves, N.B.C. Carvalho, Integration of Solar Energy and Power Management in Portable Transmitter for WPT, IEEE Wireless Power Transfer Conf. - WPTC, Kyoto, Japan, May, 2024 | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, Quasioptical Double-Lens 3-m Wireless Power Transfer at 28 GHz With Corrugated Horns, IEEE Wireless Power Transfer Conf. - WPTC, Kyoto, Japan, May, 2024,
    | Abstract     | BibTex
  • H. C. Chaves, N.B.C. Carvalho, Development of Adaptable Feedback Channel for Wireless Power Transmission Systems, URSI Atlantic Radio Scinece Conference - URSI AT-RASC, Gran Canaria, Spain, May, 2024 | BibTex
  • H. Ribeiro, S. Hemour, N.B.C. Carvalho, A Dual-Function Rectifier-Mixer Circuit for Sub-Carrier Backscattering Modulation Applications, IEEE Wireless Power Transfer Conference, Conference online, May, 2024,
    | Abstract     | BibTex
  • A. Baghel, V. Oliveira, N.B.C. Carvalho, P. Pinho, The Novel Method for Deployable Parabolic Reflector based On Uchiwa Origami, EURAAP 18th European Conference on Antennas and Propagation, Glasgow, United Kingdom, March, 2024 | BibTex
  • RJCF Figueiredo, S.C Chaudhary, M.V.B. Vanden Bossche, M R Rousstia, MM Marchetti, N.B.C. Carvalho, Discussion on System-Level Wideband Active Load-Pull Linearity Measurements: How to Reach Broadband Design Techniques?, 102nd ARFTG Microwave Measurement Conference, San Antonio, Texas, United States, January, 2024 | BibTex
  • V. Oliveira, N.B.C. Carvalho, Frequency Selective Surface Inspired by Portuguese Tiles, 17.º Congresso do Comité Português da URSI, Lisboa, Portugal, November, 2023,
    | Abstract     | BibTex
  • V. Oliveira, H. C. Chaves, N.B.C. Carvalho, Dual-Band Folded Dipole Antenna for Harmonic RFID Readers, IEEE RFID-TA IEEE International Conference on RFID Technology and Applications, Aveiro, Portugal, September, 2023,
    | Abstract     | BibTex
  • A. Baghel, H. C. Chaves, N.B.C. Carvalho, P. Pinho, Street of Coverage Constellation for Space Based Solar Power, IEEE International Conference on Wireless for Space and Extreme Environments IEEE WISEE, aveiro, Portugal, Vol., pp. -, September, 2023,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • R. A. M. Pereira, E. Fazzini, A. Costanzo, D. Masotti, N.B.C. Carvalho, Approximating the Performance of a 28 GHz Corrugated Horn Antenna with an 8x8 Time-Modulated Array, European Microwave Week/European Microwave Conf., Berlin, Germany, Vol., pp. -, September, 2023 | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, Figures-of-Merit for Wireless Power Transfer, IEEE Wireless Power Transfer Conference, San Diego, United States, August, 2023 | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, Formula for Generating Gaussian Beams Using Smooth-Walled Conical Horn Antennas, IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting IEEE AP-S/URSI, Portland, Oregon, United States, July, 2023,
    | Abstract     | BibTex
  • A. Baghel, N.B.C. Carvalho, P. Pinho, COMPARISON OF MM-WAVE WPT WITH SINGLE AND MULTIPLE FRESNEL ZONE LENS USING HIGH DENSITY POLYETHYLENE, IEEE Wireless Power Transfer Conf. - WPTC, Conference online, June, 2023,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • RJCF Figueiredo, N.B.C. Carvalho, NPR Assessment Without Multi-Tone Phase Randomization, ARFTG Microwave Measurement Conference (ARFTG), San Diego, United States, June, 2023 | BibTex
  • R. A. M. Pereira, D. Matos, RJCF Figueiredo, B. Mendes, H. C. Chaves, H. Ribeiro, H. Costa, D. Belo, J. M. M. Oliveira, A. Oliveira, N.B.C. Carvalho, Quasioptical Double-Lens Wireless Power Transfer System with Patch Array Antennas, IEEE Wireless Power Transfer Conf. - WPTC, San Diego, United States, June, 2023 | BibTex
  • A. Baghel, M. Anacleto, N.B.C. Carvalho, P. Pinho, Novel Ultra-thin Meta-Material Absorber for Potential Use in Compact Anechoic Chamber, European Conference on Antennas and Propagation - EuCap, FlORENCE, Italy, Vol., pp. -, March, 2023,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • L. F. M. A. F. M. Almeida, S. S. Pereira, I. R. Rodrigues, R. Correia, M. V. Drummond, A. Oliveira, N.B.C. Carvalho, True Time Delay-based Alignment for All-digitalBeamforming Transmitters, Radio & Wireless Symposium, Las Vegas, United States, January, 2023 | BibTex
  • A. Baghel, N.B.C. Carvalho, P. Pinho, Uncertainty in The Antenna Measurements With the Broken Absorbers, IEEE MTT-S International Microwave & RF Conference IMARC, BANGALORE, India, December, 2022,
    | Abstract     | Full text (PDF 3 MBs) | BibTex
  • R. Torres, R. Correia, N.B.C. Carvalho, Low-cost SDR based backscatter receiver and demodulator, IEEE RFID-TA IEEE International Conference on RFID Technology and Applications, Cagliari, Italy, September, 2022,
    | Abstract     | BibTex
  • V. Oliveira, N.B.C. Carvalho, Miniaturized Triple Band Antenna Applied to Implantable Medical Devices Communications, IEEE RFID-TA IEEE International Conference on RFID Technology and Applications, Cagliari, Italy, September, 2022,
    | Abstract     | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, Phase Adjustment for Beamforming Arbitrarily-Shaped Phased Arrays, European Microwave Association (EuMA) European Microwave Conference EuMC, Milan, Italy, September, 2022,
    | Abstract     | BibTex
  • R. A. M. Pereira, H. C. Chaves, H. Ribeiro, B. A. T. S. Santos, M. C. P. P. M. Monteiro, N.B.C. Carvalho, Energy Mules, a Novel Solar Power Satellite System Architecture Capable of Energy Storage, 73rd International Astronautical Congress (IAC), 2022, Paris, Paris, France, September, 2022 | Full text (PDF 959 KBs) | BibTex
  • A. Baghel, R. A. M. Pereira, N.B.C. Carvalho, REPEATER SYSTEM DESIGN FOR THE FRESNEL ZONE MICROWAVE WIRELESS POWER TRANSFER, IEEE Wireless Power Transfer Conference, Bardeaux, France, July, 2022,
    | Abstract     | BibTex
  • R. Torres, D. Matos, R. Correia, N.B.C. Carvalho, Distributed Ambient SWIPT System, IEEE Wireless Power Transfer Conference, Bordeaux, France, July, 2022,
    | Abstract     | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, M. A. S. Costa, J. M. M. Oliveira, Additively Manufactured 24 GHz Circular Horn Antennas, IEEE AP-S/URSI International Symp., Denver, United States, Vol., pp. -, July, 2022,
    | Abstract     | BibTex
  • Tagleorge M. Silveira, V. Oliveira, N.B.C. Carvalho, SISTEMA DE FILTRO SELETIVO DE FREQUÊNCIA PARA JANELAS DE COMBOIOS, Centro Rodoferroviário Português 10º Congresso Rodoferroviário Português 10CRP, Lisboa, Portugal, July, 2022,
    | Abstract     | Full text (PDF 587 KBs) | BibTex
  • Tagleorge M. Silveira, P. Pinho, N.B.C. Carvalho, SISTEMA DE COMUNICACÕES FIXAS PARA LEITURA DE SENSORES SEM FIO AO LONGO DA VIA, Centro Rodoferroviário Português 10º Congresso Rodoferroviário Português 10CRP, Lisboa, Portugal, July, 2022,
    | Abstract     | Full text (PDF 681 KBs) | BibTex
  • P. Capitão, P. Pinho, N.B.C. Carvalho, SISTEMA IOT PARA APLICAÇÃO EM FERROVIA, Centro Rodoferroviário Português 10º Congresso Rodoferroviário Português 10CRP, Aveiro, Portugal, July, 2022,
    | Abstract     | BibTex
  • D. Matos, R. Torres, R. Correia, N.B.C. Carvalho, Millimeter-Wave SWIPT System for Backscatter Self-Sustainable IoT Devices, IEEE Wireless Power Transfer Conference, Bordeuax, France, Vol., pp. 223 - 226, July, 2022,
    | Abstract     | BibTex
  • R. Torres, R. Correia, P. Rito, N.B.C. Carvalho, S. Sargento, SDR-based Distributed Spectrum Analysis in a Smart City, URSI Atlantic Radio Science Meeting AT-AP-RASC, Gran Canaria, Spain, May, 2022 | BibTex
  • VC COELHO, G. V. R. X. Xavier, D.F.A. Albuquerque, A. Oliveira, J. N. Matos, N.B.C. Carvalho, Link budget analysis of an FMCW RADAR altimeter for a CubeSat, ESA Antenna Workshop on Antennas for Earth Observation, Science, Telecommunication and Navigation Space Missions, Conference online, May, 2022,
    | Abstract     | BibTex
  • RJCF Figueiredo, N.B.C. Carvalho, Two-Tone Signals Harmonic Conditions for PAPR Variation, International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits - INMMIC, Cardiff, United Kingdom, April, 2022 | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, Preliminary Study of a Lens Antenna for a Solar Power Satellite, European Conference on Antennas and Propagation - EuCap, Madrid, Spain, March, 2022 | BibTex
  • R. Torres, F. Pereira, R. Correia, N.B.C. Carvalho, An All-Digital Ambient Backscatter Solution Powered by Energy Harvesting, IEEE MTT-S International Microwave & RF Conference IMARC, Kanpur, India, December, 2021 | BibTex
  • Tagleorge M. Silveira, P. Pinho, N.B.C. Carvalho, RFID Chipless to High Frequency of 5G, XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), Roma, Italy, August, 2021,
    | Abstract     | Full text (PDF 372 KBs) | BibTex
  • D. Matos, R. Torres, R. Correia, N.B.C. Carvalho, Ultra-Wideband 4-PAM Backscatter Modulator based on BiCMOS technology for IoT/WPT Applications, IEEE Wireless Power Transfer Conf. - WPTC, San Diego, CA, United States, June, 2021,
    | Abstract     | BibTex
  • RJCF Figueiredo, N.B.C. Carvalho, Issues of Multi-Notch NPR Characterization Procedures, ARFTG Conf., Atlanta, United States, June, 2021 | BibTex
  • P. Bouça, RJCF Figueiredo, A. wlodarkiewicz, A. Tkach, J. N. Matos, P. V. Vilarinho, N.B.C. Carvalho, Barium Strontium Titanate Thick Films for Tunable Software-Defined Radio Front-Ends, IEEE International Microwave Symposium IMS, Atlanta, United States, June, 2021,
    | Abstract     | BibTex
  • S. S. Pereira, L. F. M. A. F. M. Almeida, A. Oliveira, N.B.C. Carvalho, P. Monteiro, Sub-6 GHz Multi-Band Multi-Carrier Remote Unit Based on RFSoC, IEEE International Microwave Symposium IMS, Atlanta, United States, June, 2021,
    | Abstract     | BibTex
  • R. A. M. Pereira, N.B.C. Carvalho, A. G. Georgiadis, Focus Location Measurement of a Quasioptical Double Reflector System, IEEE Wireless Power Transfer Conference, San Diego, United States, Vol., pp. -, June, 2021 | BibTex
  • D. Matos, F. Pereira, R. Correia, N.B.C. Carvalho, Combining Wireless Backscatter and Power for Future IoSP, IEEE MTT-S International Wireless Symposium IWS, Nanjing, China, May, 2021,
    | Abstract     | BibTex
  • Tagleorge M. Silveira, P. Pinho, N.B.C. Carvalho, RFID Tattoo for COVID-19 Temperature Measuring, IEEE Radio and Wireless Symp. - RWS, San Diego, United States, Vol., pp. 98 - 100, February, 2021,
    | Abstract     | Full text (PDF 899 KBs) | BibTex
  • S. Maslovski, A. Abraray, A. Navarro, N.B.C. Carvalho, Towards Smart Beamforming Utilizing Neural- Networked Programmable Metasurfaces, Conference on Telecommunications - ConfTele ConfTELE, Leiria, Portugal, Vol., pp. -, February, 2021 | BibTex
  • S. S. Pereira, L. F. M. A. F. M. Almeida, A. Oliveira, N.B.C. Carvalho, P. Monteiro, Multi-band, Multi-technology Remote Unit (RU) Based on RFSoC, European Microwave Week/European Microwave Conf., Jaarbeurs, Netherlands, January, 2021,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • P. Bouça, RJCF Figueiredo, J. N. Matos, P. V. Vilarinho, N.B.C. Carvalho, Intermodulation Distortion Analysis of Microwave Tunable Filters Using Barium Strontium Titanate Capacitor and Varactor Diode, European Microwave Integrated Circuits - EuMIC, Utrecht, Netherlands, January, 2021 | BibTex
  • D. Matos, R. Correia, N.B.C. Carvalho, mm-Wave Backscatter front-end for 5G-IoT/WPT Applications, International Electron Devices Meeting IEDM, Conference online, December, 2020,
    | Abstract     | BibTex
  • R. Torres, R. Correia, N.B.C. Carvalho, All Digital Ambient Backscatter System, IEEE Wireless Power Transfer Conference, Seul, Korea, South, November, 2020,
    | Abstract     | BibTex
  • S. Maslovski, A. Abraray, N.B.C. Carvalho, A. Navarro, Beamforming with Neural-Networked Programmable Metasurfaces, International Congress on Engineered Material Platforms for Novel Wave Phenomena – Metamaterials, New York, United States, Vol. -, pp. 225 - 227, October, 2020 | BibTex
  • Tagleorge M. Silveira, P. Pinho, N.B.C. Carvalho, RFID Chipless to High Frequency of 5G, XXXIV General Assembly and Scientific Symposium (GASS) of the International Union of Radio Science (Union Radio Scientifique Internationale-URSI), Roma, Italy, September, 2020,
    | Abstract     | BibTex
  • RJCF Figueiredo, A. Piacibello, V. Camarchia, N.B.C. Carvalho, Swept Notch NPR for Linearity Assessment of Systems Presenting Long-Term Memory Effects, ARFTG Conf., Los Angles, United States, August, 2020 | Full text (PDF 313 KBs) | BibTex
  • C. Loss, Tagleorge M. Silveira, P. Pinho, R. Salvado, N.B.C. Carvalho, Design and Analysis of the Reproducibility of Wearable Textile Antennas, 12th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing CSNDSP, Porto, Portugal, July, 2020,
    | Abstract     | Full text (PDF 2 MBs) | BibTex
  • F. Pereira, R. Correia, M. Jordão, N.B.C. Carvalho, A Hybrid System combining SWIPT and Backscatter Techniques, IEEE Wireless Power Transfer Conference, Seoul, South Africa, May, 2020 | BibTex
  • F. Pereira, R. Correia, M. Jordão, N.B.C. Carvalho, Chipless Strain Sensor using Phase Modulation, IEEE Wireless Power Transfer Conference, Seoul, Korea, South, May, 2020 | BibTex
  • D. Matos, R. Correia, N.B.C. Carvalho, Quasi Millimiter-Wave 3-Stage Power Amplifier with Tunable Integrated Antenna for Space Applications, Asia Pacific Microwave Conf. - APMC, Singapore, Singapore, Vol., pp. 1 - 3, December, 2019,
    | Abstract     | BibTex
  • F. Pereira, S.I. Lopes, N.B.C. Carvalho, Design of a Cost-Effective Multimodal IoT Edge Device for Building Occupancy Estimation, IEEE International Smart Cities Conference ISC2, Casablanca, Morocco, October, 2019 | BibTex
  • RJCF Figueiredo, N.B.C. Carvalho, Co-Channel Radiation Pattern Distortion in Transmitting 5G Antenna Arrays due to 3rd Order Intermodulation Products, European Microwave Conf. - EMC, Paris, France, October, 2019 | Full text (PDF 1 MB) | BibTex
  • F. Pereira, R. Correia, M. Nunes, N.B.C. Carvalho, Performance evaluation of backscatter modulation techniques by using one and two frequencies, IEEE RFID-TA IEEE International Conference on RFID Technology and Applications IEEE RFID-TA, Pisa, Italy, September, 2019 | BibTex
  • A. Piacibello, RJCF Figueiredo, V. Camarchia, M. Pirola, N.B.C. Carvalho, Linearity-aware design of Doherty power amplifiers, IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies IMWS-5G, Atalanta, United States, August, 2019 | Full text (PDF 1 MB) | BibTex
  • M. Jordão, D. Belo, R. F. S. Caldeirinha, A. Oliveira, N.B.C. Carvalho, Characterization of Electromagnetic Coupling Effects in MIMO Antenna Array Beamforming, IEEE International Microwave Symposium IMS, Boston, United States, June, 2019 | BibTex
  • F. Pereira, R. Correia, N.B.C. Carvalho, Chipless Backscatter for Vital e-Health Sensing, IEEE Wireless Power Transfer Conf. - WPTC, London, United Kingdom, June, 2019 | BibTex
  • R. Correia, S. Daskalakis, P. Petridis, Y. Ding, G. Goussetis, A. G. Georgiadis, N.B.C. Carvalho, Chirp Based Backscatter Modulation, IEEE International Microwave Symposium IMS, Boston, United States, June, 2019 | BibTex
  • S.I. Lopes, F. Pereira, J. Vieira, N.B.C. Carvalho, Design of Compact LoRa Devices for Smart Building Applications, EAI International Conference on Green Energy and Networking (GreeNets), Guimarães, Portugal, November, 2018 | BibTex
  • F. Pereira, S.I. Lopes, J. Vieira, N.B.C. Carvalho, Using Compact LoRa Devices for In-Building Communications, EAI Smart City 360 Summit, Guimarães, Portugal, November, 2018,
    | Abstract     | BibTex
  • R. Correia, D. Belo, N.B.C. Carvalho, IoT/WPT Developments in Space Exploration, Asia Pacific Microwave Conf. - APMC, Kyoto, Japan, November, 2018 | BibTex
  • M. Jordão, N.B.C. Carvalho, Massive MIMO Antenna Transmitting Characterization, IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies IMWS-5G, Dublin, Ireland, Vol., pp. 1 - 3, August, 2018 | BibTex
  • R. Correia, N.B.C. Carvalho, OFDM-like High Order Backscatter Modulation, IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies IMWS-5G, Dublin, Ireland, August, 2018 | BibTex
  • F. Pereira, N.B.C. Carvalho, P. Pinho, Small Size Antennas Mountable on Mettalic Gas Cylinders, IEEE International Symp. on Antennas and Propagation - IEEE AP-S/USNC-URSI, Boston, United States, July, 2018,
    | Abstract     | BibTex
  • M. Jordão, D. Belo, N.B.C. Carvalho, Active Antenna Array Characterization for Massive MIMO 5G Scenarios, ARFTG Conf., Philadelphia, United States, Vol., pp. 1 - 4, June, 2018 | BibTex
  • D. Belo, D. Ribeiro, P. Pinho, N.B.C. Carvalho, A low Complexity and Accurate Batery-less Trackable Device, IEEE International Microwave Symposium IMS, Philadelphia, United States, June, 2018 | BibTex
  • F. Pereira, R. Correia, N.B.C. Carvalho, Comparison of active and passive sensors for IoT applications, IEEE Wireless Power Transfer Conf. - WPTC, Montreal, Canada, June, 2018,
    | Abstract     | BibTex
  • S. Daskalakis, R. Correia, G. Goussetis, MT Tentzeris, N.B.C. Carvalho, A. G. Georgiadis, Spectrally Efficient 4-PAM Ambient FM Backscattering for Wireless Sensing and RFID Applications, IEEE International Microwave Symposium IMS, Philadelphia, United States, June, 2018 | BibTex
  • R. Correia, N.B.C. Carvalho, Dual-Band High Order Modulation Ambient Backscatter, IEEE International Microwave Symposium IMS, Philadelphia, United States, June, 2018 | BibTex
  • RJCF Figueiredo, J. Mendes, S. S. Pereira, J. Gonçalves, N.B.C. Carvalho, Design of Narrow Band Single-Layer Chipless RFID Tag, URSI Atlantic Radio Scinece Conference - URSI AT-RASC, Gran Canaria, Spain, May, 2018 | Full text (PDF 1 MB) | BibTex
  • M. Jordão, R. Correia, N.B.C. Carvalho, High order modulation backscatter systems characterization, IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet) IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet) WiSNet, Anaheim, United States, Vol., pp. 44 - 46, January, 2018 | BibTex
  • M. Jordão, R. Correia, N.B.C. Carvalho, Multisine channel optimization for RF- to- DC performance characterization, Congresso do Comité Português da URSI, Lisboa, Portugal, December, 2017 | BibTex
  • M. Jordão, P.M. Cruz, N.B.C. Carvalho, Mixed-Signal SoC Characterization for Power Amplifier DPD Feedback Loop Compensation, URSI International Union of Radio Science General Assembly & Scientific Symposium URSI GASS, Montreal, Canada, August, 2017 | BibTex
  • F. Pereira, P. Pinho, R. Gonçalves, N.B.C. Carvalho, S.I. Lopes, Antenna design for ultra-compact Bluetooth devices, IEEE International Symp. on Antennas and Propagation - IEEE AP-S/USNC-URSI, San Diego, United States, July, 2017,
    | Abstract     | BibTex
  • DACD Dinis, N.B.C. Carvalho, A. Oliveira, J. Vieira, Over the Air Characterization for 5G Massive MIMO Array Transmitters, IEEE International Microwave Theory and Tech. Symp., Honolulu, United States, Vol. 0, pp. 1441 - 1444, June, 2017 | BibTex
  • A.P. Prata, S.C. Pires, A. Oliveira, N.B.C. Carvalho, Towards Circulator-Free Multi Antenna Transmitters for 5G, IEEE International Microwave Theory and Tech. Symp., Honolulu, United States, June, 2017 | BibTex
  • D. Belo, R. Correia, P. Pinho, N.B.C. Carvalho, Enabling a Constant and Efficient Flow of Wireless Energy for IoT Sensors, IEEE International Microwave Symposium IMS, Honolulu, United States, June, 2017 | BibTex
  • D. Belo, P. Pinho, N.B.C. Carvalho, 12.6 GHz off-set fed multilayer reflectarray, IEEE International Symp. on Antennas and Propagation - IEEE AP-S/USNC-URSI, San Diego, United States, June, 2017 | BibTex
  • R. Correia, N.B.C. Carvalho, HEMT based RF to DC converter efficiency enhancement using special designed waveforms, IEEE International Microwave Symposium IMS, Honolulu, United States, June, 2017 | BibTex
  • R. Correia, N.B.C. Carvalho, Single transistor passive backscatter sensor, IEEE International Microwave Symposium IMS, Honolulu, United States, June, 2017 | BibTex
  • D. Belo, N.B.C. Carvalho, Far Field WPT - Main Challenges, European Conference on Antennas and Propagation - EuCap, Paris, France, March, 2017 | BibTex
  • D. Belo, R. Correia, F. Pereira, N.B.C. Carvalho, Dual Band Wireless Power and Data Transfer for Space-Based Sensors, Topical Workshop on Internet of Space (TWIOS), Phoenix, United States, March, 2017 | BibTex
  • A.P. Prata, R. Cordeiro, DACD Dinis, A. Oliveira, J. Vieira, N.B.C. Carvalho, All-digital transceivers — Recent advances and trends, IEEE International Conf. on Electronics, Circuits and Integrated Systems - ICECS, Monte Carlo, Monaco, December, 2016,
    | Abstract     | BibTex
  • R. Correia, N.B.C. Carvalho, Design of High Order Modulation Backscatter Wireless Sensor for Passive IoT Solutions, IEEE Wireless Power Transfer Conf. - WPTC, Aveiro, Portugal, Vol. -, pp. 1 - 4, May, 2016 | BibTex
  • A.P. Prata, A. Oliveira, N.B.C. Carvalho, All-digital flexible uplink remote radio head for C-RAN, IEEE International Microwave Theory and Tech. Symp., San Francisco, United States, Vol. -, pp. 1 - 4, May, 2016 | BibTex
  • R. Horansky, D. Ribeiro, K. R. Remley, P. Hale, C. M. Wang, D. Williams, N.B.C. Carvalho, Comparison of timebase interpolation methods for traceable, wideband mm-wave communication signals, ARFTG Conf., San Francisco, United States, May, 2016 | BibTex
  • D. Ribeiro, A.P. Prata, P.M. Cruz, N.B.C. Carvalho, Mixed-signal characterization approaches for emerging wireless technologies, ARFTG Conf., San Francisco, United States, May, 2016 | BibTex
  • M. Jordão, R. Correia, D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, RF-to-DC and backscatter load modulator characterization, ARFTG Conf., San Francisco, United States, Vol., pp. 1-4 -, May, 2016 | BibTex
  • T.M. Moura, P.M. Cruz, W. Jang, N.B.C. Carvalho, MMIC GaN Power Amplifier Operating as a RF-to-DC Converter at X-Band, Congresso do Comité Português da URSI, Lisboa, Portugal, Vol. 1, pp. 1 - 4, December, 2015 | BibTex
  • A.P. Prata, A. Oliveira, N.B.C. Carvalho, FPGA-based All-digital Software Defined Radio Receiver, International Conf. on Field Programmable Logic and Applications - FPL, London, United Kingdom, Vol. -, pp. 1 - 2, September, 2015 | BibTex
  • M. Jordão, P.M. Cruz, D. Ribeiro, N.B.C. Carvalho, RFID Characterization System based on LABVIEW, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 1 - 4, September, 2015,
    | Abstract     | BibTex
  • R. Correia, N.B.C. Carvalho, State of art in Passive Backscatter Wireless Sensor Networks with Wireless Power Transmission, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. -, pp. 1 - 4, September, 2015 | BibTex
  • R. Cordeiro, A.P. Prata, A. Oliveira, N.B.C. Carvalho, J. Vieira, FPGA-based all-digital software defined radio system demonstration, International Conf. on Field Programmable Logic and Applications - FPL, London, United Kingdom, September, 2015,
    | Abstract     | BibTex
  • D. Riscado Riscado, J. Santos, DACD Dinis, G. Anjos, D. Belo, A. Oliveira, N.B.C. Carvalho, A Laboratorial Platform for C-RAN, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol., pp. 1 - 8, September, 2015 | BibTex
  • A.P. Prata, A. Oliveira, N.B.C. Carvalho, An Agile and Wideband All-Digital SDR Receiver for 5G Wireless Communications, Euromicro Conf. on Digital System Design - Euromicro, Funchal, Portugal, Vol. -, pp. 1 - 6, August, 2015 | BibTex
  • D. Riscado, J. Santos, DACD Dinis, G. Anjos, D. Belo, N.B.C. Carvalho, A. Oliveira, A Flexible Research Testbed for C-RAN, Euromicro Conf. on Digital System Design - Euromicro, Funchal, Portugal, Vol. 0, pp. 131 - 138, August, 2015,
    | Abstract     | BibTex
  • S. J. Julião, F. M. Martins, A. Oliveira, A.P. Prata, S.I. Lopes, J. C. Duarte Duate, N.B.C. Carvalho, N.V.S. Silva, P. Jesus Jesus, High performance microwave point-to-point link for 5G backhaul with flexible spectrum aggregation, IEEE International Microwave Symposium IMS, Phoenix, United States, Vol., pp. 1 - 4, June, 2015 | BibTex
  • P.M. Cruz, D. Ribeiro, A.P. Prata, N.B.C. Carvalho, M.V.B. Vanden Bossche, Live demonstration: Mixed-signal network analysis characterization and modeling platform, IEEE International Symp. on Circuits and Systems - ISCAS, Lisbon, Portugal, Vol. 1, pp. 1 - 1, May, 2015,
    | Abstract     | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Assessment on the Wireless Power Transfer Figures of Merit and Transmitter Architectures, URSI Atlantic Radio Scinece Conference - URSI AT-RASC, Gran Canaria, Spain, Vol. 1, pp. 1 - 5, May, 2015,
    | Abstract     | BibTex
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Constructive combination of resonant magnetic coupling and resonant electrical coupling, IEEE Wireless Power Transfer Conf. - WPTC, Boulder, CO, United States, Vol. 0, pp. 1 - 3, May, 2015 | BibTex
  • A.P. Prata, D. Ribeiro, P.M. Cruz, A. Oliveira, N.B.C. Carvalho, Improving DPD Performance by Compensating Feedback Loop Impairments in RF ADCs, IEEE International Microwave Theory and Tech. Symp., Phoenix, United States, Vol. -, pp. 1 - 4, May, 2015 | BibTex
  • R. Correia, N.B.C. Carvalho, S. Kawasaki, Backscatter Wireless Sensor Network with WPT Capabilities, IEEE International Microwave Theory and Tech. Symp., Phoenix, United States, Vol. -, pp. 1 - 4, May, 2015 | BibTex
  • R. Correia, N.B.C. Carvalho, Backscatter radio coverage enhancements using improved WPT signal waveform, IEEE Wireless Power Transfer Conf. - WPTC, Boulder, United States, Vol. -, pp. 1 - 4, May, 2015 | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Towards a denser frequency grid in phase measurements using mixer-based receivers, ARFTG Conf., Phoenix, United States, May, 2015 | BibTex
  • A. Costa, M. Jordão, H. Machado, H. Miranda, N.B.C. Carvalho, Surf board electronic device, URSI Atlantic Radio Scinece Conference - URSI AT-RASC, Gran Canaria, Spain, Vol., pp. 1-1 -, May, 2015 | BibTex
  • Q. L. Luo, L.Z. Zhang, S. Gao, P.M. Cruz, W. Jang, S. Pires, N.B.C. Carvalho, Interleaved dual-band circularly polarized active array antenna for satellite communications, European Conference on Antennas and Propagation - EuCap, Lisbon, Portugal, Vol. 1, pp. 1 - 5, April, 2015,
    | Abstract     | BibTex
  • D. Riscado Riscado, A.P. Prata, DACD Dinis, J. Santos, S. J. Julião, J. C. Duarte Duate, G. Anjos, A. Oliveira, N.B.C. Carvalho, FPGA Applications in 5G Mobile Networks, Jornadas sobre Sistemas Reconfiguráveis - REC, Porto, Portugal, Vol., pp. 17 - 24, February, 2015 | BibTex
  • R. Gonçalves, N.B.C. Carvalho, P. Pinho, Passive Sensors for Food Quality Monitoring and Counterfeiting, IEEE Sensors, Valencia, Spain, Vol. 1, pp. - - -, November, 2014 | BibTex
  • S.P. Pires, P.M. Cruz, W. Jang, N.B.C. Carvalho, GaN powered Ka-band high-efficiency multi-beam transceivers for satellites, ESA Microwave Technology and Techniques Workshop: Enabling Future Space Systems, Noordwijk, Netherlands, Vol. 1, pp. 1 - 7, November, 2014,
    | Abstract     | BibTex
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Wireless power transmission based on resonant electrical coupling, European Microwave Week/European Microwave Conf., Rome, Italy, Vol. -, pp. - - -, October, 2014,
    | Abstract     | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Large-Signal Characterization of a Mixed-Signal SoC Receiver for Multiband SDR/CR Designs, European Microwave Week/European Microwave Conf., Rome, Italy, Vol. 1, pp. 1 - 4, October, 2014,
    | Abstract     | BibTex
  • S.R. Rima, R. Gonçalves, A.C. Collado, A. G. Georgiadis, N.B.C. Carvalho, Passive UHF RFID Enabled Temperature Sensor Tag on Cork Substrate, IEEE International Conf. on RFID-Technology and Applications, Tampere, Finland, Vol. 1, pp. - - -, September, 2014 | BibTex
  • R. Gonçalves, R. M. Magueta, P. Pinho, N.B.C. Carvalho, Passive Sensors Embedded Into Logistic Chains, URSI General Assembly, Beijing, China, Vol. 1, pp. 1 - 4, August, 2014 | BibTex
  • R. Gonçalves, R. M. Magueta, P. Pinho, N.B.C. Carvalho, RFID passive tag antenna for cork bottle stopper, IEEE AP-S/URSI International Symp., Memphis, TN, United States, Vol. 1, pp. - - -, July, 2014 | BibTex
  • R. Gonçalves, R. M. Magueta, A. D. Duarte, P. Pinho, N.B.C. Carvalho, UHF RFID tag antenna for bottle labeling, IEEE AP-S/URSI International Symp., Memphis, TN, United States, Vol. 1, pp. - - -, July, 2014 | BibTex
  • R. Gonçalves, N.B.C. Carvalho, P. Pinho, Smart Environment Technology as a Possible Enabler of Smart Cities, IEEE International Microwave Theory and Tech. Symp., Tampa, FL, United States, Vol. 1, pp. - - -, June, 2014 | BibTex
  • R. Gonçalves, S.R. Rima, R. M. Magueta, A.C. Collado, P. Pinho, N.B.C. Carvalho, A. G. Georgiadis, RFID Tags on Cork Stoppers for Bottle Identification, IEEE International Microwave Theory and Tech. Symp., Tampa, FL, United States, Vol. 1, pp. - - -, June, 2014 | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Characterization of SDR/CR Front-Ends for Improved Digital Signal Processing Algorithms, European Signal Processing Conference EUSIPCO, Lisbon, Portugal, Vol. 1, pp. 1 - 4, June, 2014,
    | Abstract     | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Automatic Characterization of RF DACs for Software Defined Radio Applications, IEEE International Microwave Theory and Tech. Symp., Tampa, United States, Vol. 1, pp. 1 - 4, June, 2014,
    | Abstract     | BibTex
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Behavior of resonant electrical coupling in terms of range and relative orientation, IEEE Wireless Power Transfer Conf. - WPTC, Jeju City, Korea, South, Vol. 1, pp. 118 - 121, May, 2014,
    | Abstract     | BibTex
  • R. Gonçalves, N.B.C. Carvalho, P. Pinho, Intermodulation in Active Reconfigurable Antennas, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Leuven, Belgium, Vol. 1, pp. - - -, April, 2014 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, A comprehensive analysis of the clipping effects on signals with different statistical patterns, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Leuven, Belgium, Vol. 1, pp. 1 - 3, April, 2014,
    | Abstract     | BibTex
  • P.F. Fonseca, J. N. Matos, N.B.C. Carvalho, P. Pedreiras, Uma experiência na motivação de alunos do 1.º ano de Engenharia., Congresso Luso Moçambicano de Engenharia - CLME, Inhambane, Mozambique, Vol. 1, pp. . - ., April, 2014,
    | Abstract     | BibTex
  • P.M. Cruz, D. Ribeiro, N.B.C. Carvalho, Measurement setup for linear characterization of a mixed-signal SoC wideband receiver, IEEE Radio and Wireless Symp. - RWS, Newport Beach, CA, United States, Vol. 1, pp. 139 - 141, January, 2014,
    | Abstract     | BibTex
  • J. Tavares, N. Barroca, P. Pinho, Henrique M. Saraiva M. Saraiva, Luis M. Borges, F. J. Velez, C. Loss, R. Salvado, R. Gonçalves, N.B.C. Carvalho, Spectrum Opportunities for Electromagnetic Energy Harvesting from 350 MHz to 3 GHz, URSI Seminar of the Portuguese Committee, Lisbon, Portugal, Vol. -, pp. - - -, November, 2013 | BibTex
  • R. Gonçalves, N.B.C. Carvalho, P. Pinho, Investigation into cork substrate printed antennas for RFID applications, URSI Seminar of the Portuguese Committee, Lisboa, Portugal, Vol. -, pp. - - -, November, 2013 | BibTex
  • S.I. Lopes, J. Vieira, J.R. Reis, D.F.A. Albuquerque, N.B.C. Carvalho, Accurate Smartphone Indoor Positioning Using Non-Invasive Audio, International Conference on Indoor Positioning and Indoor Navigation – IPIN, Montbéliard – Belfort, France, October, 2013 | BibTex
  • N. Barroca, Henrique M. Saraiva M. Saraiva, P. Pinho, Paulo T. Gouveia T. Gouveia, J. Tavares, Luis M. Borges, F. J. Velez, C. Loss, , R. Gonçalves, N.B.C. Carvalho, , Antennas and Circuits for Ambient RF Energy Harvesting in Wireless Body Area Networks, IEEE International Symp. on Personal, Indoor and Mobile Radio Commun - PIMRC, London, United Kingdom, Vol. -, pp. - - -, September, 2013 | BibTex
  • R. Gonçalves, N.B.C. Carvalho, P. Pinho, C. Loss, R. Salvado, Textile Antenna for Electromagnetic Energy Harvesting for GSM900 and DCS1800 bands, IEEE AP-S/URSI International Symp., Orlando, United States, Vol. -, pp. - - -, July, 2013 | BibTex
  • R. Gonçalves, N.B.C. Carvalho, P. Pinho, Metamaterial inspired compact printed antenna for WLAN applications, IEEE AP-S/URSI International Symp., Orlando, United States, Vol. -, pp. - - -, July, 2013 | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Planar Omnidirectional Microstrip Antenna Array for 5 GHz ISM and UNII band, IEEE AP-S/URSI International Symp., Orlando, United States, Vol. 1, pp. 1 - 2, July, 2013,
    | Abstract     | BibTex
  • L. Brás, P. Pinho, N.B.C. Carvalho, Omnidirectional Printed Loop Antenna for Taxi Communications, IEEE AP-S/URSI International Symp., Orlando, United States, Vol. 1, pp. 1 - 2, July, 2013,
    | Abstract     | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Synchronous frequency domain measurements for the extraction of X-parameters in digital to analog transmitters, IEEE International Microwave Theory and Tech. Symp., Seattle, United States, Vol. 1, pp. 1 - 4, June, 2013,
    | Abstract     | BibTex
  • R. Gonçalves, N.B.C. Carvalho, P. Pinho, Increasing the RFID Readability Range Using Wireless Power Transmission Enhancements, IEEE Wireless Power Transfer Conf. - WPTC, Perugia, Italy, Vol. -, pp. - - -, May, 2013 | BibTex
  • R. Gonçalves, P. Pinho, E. S. Santana, N.B.C. Carvalho, Smart Floor: Indoor navigation based on RFID, IEEE Wireless Power Transfer Conf. - WPTC, Perugia, Italy, Vol. -, pp. - - -, May, 2013 | BibTex
  • J. Tavares, N. Barroca, Henrique M. Saraiva M. Saraiva, Luis M. Borges, F. J. Velez, C. Loss, , P. Pinho, R. Gonçalves, N.B.C. Carvalho, Spectrum Opportunities for Electromagnetic Energy Harvesting from 350 MHz to 3 GHz, International Symp. on Medical Information and Communication Technology - ISMICT, Tokyo, Japan, Vol. -, pp. 126 - 130, March, 2013 | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Evaluation of Comb Generator Performance for Nonlinear Measurements on Mixed-Domain Instrumentation, URSI Seminar of the Portuguese Committee, Lisbon, Portugal, Vol. 1, pp. 1 - 4, November, 2012,
    | Abstract     | BibTex
  • P.M. Cruz, N.B.C. Carvalho, M.E. Valkama, Evaluation of Second-Order Bandpass Sampling Receivers for Software Defined Radio, European Microwave Integrated Circuits - EuMIC, Amsterdam, Netherlands, Vol. 1, pp. 667 - 670, October, 2012 | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Corrected mixed-domain measurements for software defined radios, European Microwave Week/European Microwave Conf., Amsterdam, Netherlands, Vol. 1, pp. 554 - 557, October, 2012,
    | Abstract     | BibTex
  • N.V.S. Silva, M. Ventura, A. Oliveira, N.B.C. Carvalho, Evaluation of an FPGA-based Reconfigurable SoC for All-Digital Flexible RF Transmitters, Euromicro Conf. on Digital System Design - Euromicro, Cesme, Turkey, Vol., pp. 890 - 895, September, 2012 | BibTex
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Evaluation of Pulse Modulators for All-Digital Agile Transmitters, IEEE International Microwave Theory and Tech. Symp., Montreal, Canada, Vol., pp. 1 - 3, June, 2012 | BibTex
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Prototyping a Fast Delta-Sigma Modulator Architecture Enabling FPGA-embedded Software-Defined Radio Transmitters, Jornadas sobre Sistemas Reconfiguráveis - REC, Lisboa, Portugal, Vol. N/A, pp. 71 - 74, February, 2012 | BibTex
  • N.V.S. Silva, A. Oliveira, U.G. Gustavsson, N.B.C. Carvalho, A Dynamically Reconfigurable Architecture Enabling All-Digital Transmission for Cognitive Radios, IEEE Radio and Wireless Symp. - RWS, Santa Clara, United States, Vol., pp. 1 - 4, January, 2012 | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Transmission of Four Channels SCM Over Fiber and Nonlinear Compensation for RSOA External Modulators, IEEE GLOBECOM Workshops: Distributed Antenna Systems for Broadband Mobile Communication, Houston, United States, Vol. -, pp. 1 - 5, December, 2011,
    | Abstract     | BibTex
  • P.M. Cruz, D. Ribeiro, N.B.C. Carvalho, Instrumentação Virtualizada para Tecnologias Rádio Emergentes, URSI Seminar of the Portuguese Committee, Lisboa, Portugal, Vol. 1, pp. ?? - ??, November, 2011 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, M.E. Valkama, On the Implementation of a Mixed Frequency-Time Simulator for Band-Pass Sampling Receivers, CETC- Conf. on Electronics, Telecommunications and Computers, Lisboa, Portugal, Vol. 1, pp. ?? - ??, November, 2011 | BibTex
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Two-Tone Measurement Technique to apply on Mixed-Domain Instrumentation, URSI Seminar of the Portuguese Committee, Lisbon, Portugal, Vol. 1, pp. 1 - 4, November, 2011,
    | Abstract     | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Improved Sectorised Antenna for Indoor Localization Systems, European Microwave Week/European Microwave Conf., Manchester, United Kingdom, Vol., pp. 1 - 4, October, 2011,
    | Abstract     | Full text (PDF 514 KBs) | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Multi-Carrier Wideband Nonlinear Behavioral Modeling for Cognitive Radio Receivers, European Microwave Week/European Microwave Conf., Manchester, United Kingdom, Vol. 1, pp. 414 - 417, October, 2011 | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Location System applied in Management of Emergency Scenarios, ETH Zurich - International Conf. on Indoor Positioning and Indoor Navigation - IPIN, Guimaraes, Portugal, Vol., pp. 1 - 4, September, 2011,
    | Abstract     | BibTex
  • R. D. Fernandes, A. Boaventura, N.B.C. Carvalho, J. N. Matos, Increasing the range of wireless passive sensor nodes using multisines, IEEE International Conf. on RFID-Technology and Applications, Barcelona, Spain, Vol. 1, pp. 549 - 553, September, 2011,
    | Abstract     | BibTex
  • T. Abrudan, L. M. Paula, J. Barros, J. P. C. Silva Cunha, N.B.C. Carvalho, Indoor location estimation and tracking in wireless sensor networks using a dual frequency approach, IEEE International Conf. on Indoor Positioning and Indoor Navigation - IPIN 2011, Guimarães, Portugal, Vol. -, pp. - - -, September, 2011 | BibTex
  • W. Jang, N.B.C. Carvalho, Crest factor reduction through scaling and recovering by frame in OFDM communication systems, URSI General Assembly, Istanbul, Turkey, Vol. 2011, pp. 1 - 4, August, 2011 | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Patch-Excited Horn Antenna Array for Localization Systems, IEEE AP-S/URSI International Symp., Spokane, United States, Vol., pp. 1 - 4, July, 2011,
    | Abstract     | Full text (PDF 1015 KBs) | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Indoor/Outdoor Management System Compliant with Google Maps and Android® OS, Conf. on Telecommunications - ConfTele, Lisboa, Portugal, Vol., pp. 1 - 4, April, 2011,
    | Abstract     | BibTex
  • R. D. Fernandes, N.B.C. Carvalho, J. N. Matos, Design of a battery-free wireless sensor node, Conf. on Telecommunications - ConfTele, Lisboa, Portugal, Vol. 1, pp. 1 - 4, April, 2011,
    | Abstract     | BibTex
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Validation of a Flexible FPGA-based LDPC Decoder Through Hardware-Software Co-simulation, Jornadas sobre Sistemas Reconfiguráveis - REC, Porto, Portugal, Vol. N/A, pp. 39 - 42, February, 2011 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Enhanced Architecture to Increase the Dynamic Range of SDR Receivers, IEEE Radio and Wireless Symp. - RWS, Phoenix, United States, Vol. 1, pp. 331 - 334, January, 2011 | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Low Power Localization Engine Based on Wireless Sensor Networks, IBERSENSOR - Ibero-American Congress on Sensors, Lisboa, Portugal, Vol., pp. 1 - 5, October, 2010,
    | Abstract     | Full text (PDF 780 KBs) | BibTex
  • L. Brás, N.B.C. Carvalho, P. Pinho, Low Power Location Protocol based on ZigBee Wireless Sensor Networks, ETH Zurich - International Conf. on Indoor Positioning and Indoor Navigation - IPIN, Zurich, Switzerland, Vol., pp. 1 - 7, September, 2010,
    | Abstract     | Full text (PDF 1015 KBs) | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Modeling Band-Pass Sampling Receivers Nonlinear Behavior in Different Nyquist Zones, IEEE International Microwave Theory and Tech. Symp., Anaheim, United States, Vol. 1, pp. 1684 - 1687, May, 2010 | BibTex
  • HM Mostardinha, P. M. Cabral, N.B.C. Carvalho, GaN RF Testbed for Space Applications, ESA Microwave Technology and Techniques Workshop: Enabling Future Space Systems, Noordwijk, Netherlands, Vol. .., pp. .. - .., May, 2010 | BibTex
  • H. Gomes, A. R. T. Testera, N.B.C. Carvalho, M. B. Barciela, K. R. Remley, The Impact of Long-term Memory Effects on Diode Power Probes, IEEE International Symp. on Microwave Theory and Tech., Anaheim, United States, Vol. 1, pp. 596 - 599, May, 2010 | BibTex
  • HM Mostardinha, P. M. Cabral, N.B.C. Carvalho, GaN RF Oscillator used in Space Applications, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Goteborg, Sweden, Vol. .., pp. 50 - 53, April, 2010 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Architecture for Dynamic Range Extension of Analog-to-Digital Conversion, IEEE MTT-S International Microwave Worshop Series (IMWS) on Art of Miniaturizing RF and Microwave Passive Components, Aveiro, Portugal, Vol. 1, pp. 1 - 4, February, 2010 | BibTex
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, Reconfigurable Architectures for Next Generation Software-Defined Radio, Jornadas sobre Sistemas Reconfiguráveis - REC, Aveiro, Portugal, Vol. N/A, pp. 41 - 44, February, 2010 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, PWM Bandwidth and Wireless System Peak-to-Minimum Power Ratio, European Microwave Week/European Microwave Conf., Rome, Italy, Vol. 1, pp. 1736 - 1739, September, 2009 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Characterization of a SDR Front-End Receiver with Multisine Excitations, Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. 1, pp. -- - --, May, 2009 | BibTex
  • G. Martins, N.B.C. Carvalho, P. M. Cabral, Co-location of different technologies in the same site, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Malaga, Spain, Vol. .., pp. 177 - 180, November, 2008 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Multi-Mode Receiver for Software Defined Radio, URSI Seminar of the Portuguese Committee, Lisboa, Portugal, Vol. 1, pp. -- - --, November, 2008 | BibTex
  • H. Gomes, N.B.C. Carvalho, Interference cancellation: New configuration technique for cancellation of strong interferences from adjacent frequency bands, International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits - INMMIC, Malaga, Spain, Vol. 1, pp. 65 - 68, November, 2008 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, PAPR Evaluation in Multi-Mode SDR Transceivers, European Microwave Week/European Microwave Conf., Amesterdam, Netherlands, Vol. 1, pp. 1354 - 1357, October, 2008 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, K. R. Remley, K. Gard, Mixed Analog-Digital Instrumentation for Software Defined Radio Characterization, IEEE International Microwave Theory and Tech. Symp., Atlanta, United States, Vol. 1, pp. 253 - 256, June, 2008 | BibTex
  • P.M. Cruz, N.B.C. Carvalho, Evaluation of Nonlinear Distortion in ADCs Using Multisines, IEEE International Microwave Theory and Tech. Symp., Atlanta, United States, Vol. 1, pp. 1433 - 1436, June, 2008 | BibTex
  • H. Gomes, N.B.C. Carvalho, The use of intermodulation distortion for the design of passive RFID, European Microwave Week/European Microwave Conf., Munique, Germany, Vol. 1, pp. 1656 - 1659, October, 2007 | BibTex
  • H. Gomes, N.B.C. Carvalho, RFID for Location Proposes: An approach using the Intermodulation Distortion, URSI - International Union of Radio Science XXII Simposium Nacional de la Unión Científica Internacional de Radio, Malaga, Spain, Vol. 1, pp. -- - --, September, 2007 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, GaN Model Robustness from an IMD point of view, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. .., pp. 177 - 180, May, 2007 | BibTex
  • H. Gomes, N.B.C. Carvalho, RFID for Location Proposes Based on the Intermodulation Distortion, Mediterranean Microwave Symp. - MMS, Budapest, Hungary, Vol. 1, pp. -- - --, May, 2007 | BibTex
  • H. Gomes, N.B.C. Carvalho, RFID for Location Proposes, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. -- - --, May, 2007 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, Multi-sine Response of Third Order Nonlinear Systems with Memory Based on Two-tone Measurements, European Microwave Week/European Microwave Conf., Manchester, United Kingdom, Vol. 1, pp. 263 - 266, September, 2006 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Envelope Time Domain Characterization of Microwave Power Amplifiers, Mediterranean Microwave Symp. - MMS, Genova, Italy, Vol. .., pp. 383 - 386, September, 2006 | BibTex
  • J. C. Pedro, P.M.L. Lavrador, N.B.C. Carvalho, A Formal Procedure for Microwave Power Amplifier Behavioral Modeling, IEEE International Symp. on Microwave Theory and Tech., San Francisco, United States, Vol. 2, pp. 848 - 851, June, 2006 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, J. C. Pedro, A Figure of Merit for the Evaluation of Long Term Memory Effects in RF Power Amplifiers, IEEE International Symp. on Microwave Theory and Tech., San Francisco, United States, Vol. 1, pp. 1109 - 1112, June, 2006 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, J. C. Pedro, Nonlinear Microwave System Characterization Based on Higher Order Statistics, ARFTG Conf., San Francisco, United States, Vol. 1, pp. ? - ?, June, 2006 | BibTex
  • N.B.C. Carvalho, P. M. Cabral, J. C. Pedro, Modeling Strategies and Characterization Techniques for Microwave GaN Power Amplifiers, ESA Microwave Technology and Techniques Workshop: Enabling Future Space Systems, Noordwijk, Netherlands, Vol. 0, pp. 0 - 0, May, 2006 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, J. C. Pedro, Practical Higher Order Statistics Signal Characterization, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Aveiro, Portugal, Vol. 1, pp. ? - ?, January, 2006 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Bias Networks Impact on the Dynamic AM/AM Contours in Microwave Power Amplifiers, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Aveiro, Portugal, Vol. .., pp. .. - .., January, 2006 | BibTex
  • P.M.L. Lavrador, J. C. Pedro, N.B.C. Carvalho, A new method for the orthogonal extraction of the Volterra series coefficients, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Aveiro, Portugal, Vol. 1, pp. 138 - 141, January, 2006 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Dynamic AM-AM and AM-PM Behavior in Microwave PA Circuits, Asia Pacific Microwave Conf. - APMC, Suzhou, China, Vol. 4, pp. 2386 - 2389, December, 2005 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, J. C. Pedro, Practical Multitone Amplitude and Phase Characterization, Asia Pacific Microwave Conf. - APMC, suzhou, China, Vol. 5, pp. 3055 - 3058, December, 2005 | BibTex
  • P.M.L. Lavrador, J. C. Pedro, N.B.C. Carvalho, A new Volterra series based orthogonal behavioral model for power amplifiers, Asia Pacific Microwave Conf. - APMC, Suzhou, China, Vol. 1, pp. - - -, December, 2005 | BibTex
  • P.M.L. Lavrador, J. C. Pedro, N.B.C. Carvalho, A New Nonlinear Behavioral Model Extracted Orthogonally, Conf. on Design of Circuits and Integrated Systems, Lisbon, Portugal, Vol. -, pp. - - -, November, 2005 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Extraction Procedure and Validation of a Large-Signal Model for GaN HEMTs, Conf. on Design of Circuits and Integrated Systems, Lisboa, Portugal, Vol. -, pp. - - -, November, 2005 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Laboratory generation of multi-sines with pre-described statistics, European Microwave Conf. - EMC, Paris, France, Vol. 2, pp. - - -, October, 2005 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Inferring Nonlinear Distortion Performance of Power Amplifiers Subject to Telecommunications Signals from Two-Tone Measurements, IEEE International Microwave Theory and Tech. Symp., Long Beach, United States, Vol. CDROM, pp. 817 - 820, June, 2005 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Simulation of Nonlinear RF Circuits Driven By Multi-carrier Modulated Signals, IEEE International Symp. on Microwave Theory and Tech., Long Beach, United States, Vol., pp. 1 - 2, June, 2005 | BibTex
  • P.M.L. Lavrador, J. C. Pedro, N.B.C. Carvalho, A New Nonlinear Quasi-Orthogonal Model Extracted in the Frequency Domain, Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. -, pp. - - -, April, 2005 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Novel Explanation for Low Frequency High Linearity Characteristics on BJTs, Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. -, pp. - - -, April, 2005 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Higly Linear GaN class AB power amplifier design, Asia Pacific Microwave Conf. - APMC, New Delhi, India, December, 2004 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, J. A. Garcia, Designing Highly-Linear Microwave Power Amplifiers Based on Large-Signal IMD Sweet-Spots, Asia Pacific Microwave Conf. - APMC, Delhi, India, Vol. CDROM, pp. -, December, 2004 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, J. C. Pedro, Automatic Phase and Amplitude Characterization, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Rome, Italy, Vol. 1, pp. ? - ?, December, 2004 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Modeling AM/AM and AM/PM conversions in microwave power amplifier circuits, Integrated Non-linear Microwave and Millimetre-wave Circuits Conf. - INMMIC, Rome, Italy, Vol., pp. 139 - 142, November, 2004 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, Nonlinear model with AM/AM, AM/PM and IMD prediction capabilities for GaN HEMTs, International Workshop on Electronics and System Analysis - IWESA, Bilbao, Spain, October, 2004 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Behavioural Modelling and Simulation of Microwave/Wireless Circuits and Sub-Systems, International Workshop on Electronics and System Analysis - IWESA, Bilbao, Spain, Vol. 1, pp. 11 - 14, October, 2004 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, Spectral Filtering Setup for Uncorrelated IMD Multi-tone Phase and Amplitude Measurement, European Microwave Conf. - EMC, Amsterdam, Netherlands, Vol. 1, pp. 201 - 204, October, 2004 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, A New Approach to Mixer’s Linearization, European Microwave Conf. - EMC, Amesterdam, Netherlands, Vol. 2, pp. 1061 - 1064, October, 2004 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, New Nonlinear Device Model for Microwave Power GaN HEMTs, IEEE International Symp. on Microwave Theory and Tech., Fort Worth, United States, Vol. 1, pp. 51 - 54, June, 2004 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Nonlinear Simulation of Mixers for Assessing System-Level Performance, IEEE International Microwave Theory and Tech. Symp., Forth Worth, United States, Vol. 1, pp. 1 - 1, June, 2004 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Designing Band-Pass Multisine Excitations for Microwave Behavioral Model Identification, IEEE International Microwave Theory and Tech. Symp., Fort Worth, United States, Vol. 0, pp. 791 - 794, June, 2004 | BibTex
  • A. M. O. D. Duarte, P. B. Pereira, F. Oliveira, N.B.C. Carvalho, S. Petiz, Enquadramento e impacto dos sistemas de informação no Programa Aveiro Norte, Encontro Lusófono de Ciências da Comunicação, Covilhã, Portugal, April, 2004 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Statistics of Microwave Signals and Their Impact on the Response of Nonlinear Dynamic Systems, ARFTG Conf., Boulder, United States, Vol. 62nd ARFTG Conference Dig., pp. 143 - 153, December, 2003 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, An Integrated View of Nonlinear Distortion Phenomena in Various Power Amplifier Technologies, European Microwave Conf. - EMC, Munique, Germany, Vol. -, pp. 69 - 73, October, 2003 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, P.M.L. Lavrador, Modeling Nonlinear Behavior of Band-Pass Memoryless and Dynamic Systems, IEEE International Symp. on Microwave Theory and Tech., Philadelphia, United States, Vol. CD-ROM, pp. ---- - ----, June, 2003 | BibTex
  • P. M. Cabral, J. C. Pedro, N.B.C. Carvalho, A Repeater Prototype for the UMTS Network Radio Sub-System, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. -, pp. 277 - 280, June, 2003 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Mixed Time and Frequency Domain Behavioral Modeling and Simulation, Workshop on Fundamentals of Nonlinear Behavioral Modeling, Philadelphia, United States, Vol. 1, pp. 1 - 1, June, 2003 | BibTex
  • J. P. M. Martins, N.B.C. Carvalho, J. C. Pedro, Post-Distortion Linearising Technique Applied to Mixers, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 111 - 114, June, 2003 | BibTex
  • P.M.L. Lavrador, N.B.C. Carvalho, J. C. Pedro, Noise and distortion figure - an extension of noise figure definition for nonlinear devices, IEEE International Microwave Theory and Tech. Symp., Philadelphia, United States, Vol. 3, pp. 2137 - 2140, June, 2003 | BibTex
  • P.M.L. Lavrador, J. C. Pedro, N.B.C. Carvalho, Underlying Linear System Identification of Memoryless and Dynamic Nonlinear Systems, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. -, pp. - - -, June, 2003 | BibTex
  • N.B.C. Carvalho, Optimum Load Selection for Maximized Large Signal IMD Sweet Spots, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 527 - 530, April, 2003 | BibTex
  • J. C. Pedro, N.B.C. Carvalho, Simulation of RF Circuits Driven by Modulated Signals Without Bandwidth Constraints, IEEE International Symp. on Microwave Theory and Tech., Seattle, United States, Vol. 3, pp. 2173 - 2176, June, 2002 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Intermodulation Distortion in LDMOS Transistor Amplifiers, IEEE International Symp. on Microwave Theory and Tech., Seattle, United States, Vol. 1, pp. 1 - 1, June, 2002 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Novel Artificial Frequency Mapping Techniques for Multi-tone Simulation of Mixers, IEEE International Symp. on Microwave Theory and Tech., Phoenix, United States, Vol. 1, pp. 1 - 1, May, 2001 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, A Novel Measurement Standard for Nonlinear In-Band Distortion Characterization, ARFTG Conf., Phoenix, United States, Vol. 1, pp. 1 - 1, May, 2001 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, A Si LDMOS-Based UHF Power Amplifier, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 1 - 1, April, 2001 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Multitone Simulation of Mixers, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 1 - 1, April, 2001 | BibTex
  • N.B.C. Carvalho, Intermodulation Interference in the GSM/UMTS Bands, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 1 - 1, April, 2001 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Two-Tone IMD Assymetry in Microwave Power Amplifiers, IEEE International Symp. on Microwave Theory and Tech., Boston, United States, Vol. 1, pp. 1 - 1, June, 2000 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, State-of-the-Art Simulation of Microwave Amplifier's Nonlinear Distortion, ARFTG Conf., Malaga, Spain, Vol. 1, pp. 1 - 1, December, 1999 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Multi-Tone Intermodulation Distortion Performance of 3rd Order Microwave Circuits, IEEE International Symp. on Microwave Theory and Tech., Anaheim, United States, Vol. 1, pp. 763 - 766, June, 1999 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Large Signal IMD Sweet Spots in Microwave Power Amplifiers, IEEE International Microwave Theory and Tech. Symp., Anaheim, United States, Vol. 1, pp. 517 - 520, June, 1999 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Gain Compression or Expansion, Distortion and Other Large Signal Power Amplifier Related Phenomena, Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 515 - 518, April, 1999 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, A New Active Device Model Approximation Suitable for a Nonlinear Frequency Domain Simulator, Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 187 - 190, April, 1999 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Non-Linear Circuit Simulation of Complex Spectra in the Frequency Domain, IEEE International Conf. on Electronics, Circuits and Systems, Lisboa, Portugal, Vol. 1, pp. 129 - 132, September, 1998 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, A Fast Spectral Balance Method for Non-linear Circuit Simulation in the Frequency Domain, USNC/URSI National Radio Science Meeting, Bilbao, Spain, Vol. 1, pp. 587 - 590, June, 1998 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Simulation of Multi-Tone IMD Distortion and Spectral Regrowth Using Spectral Balance, IEEE International Symp. on Microwave Theory and Tech., Baltimore, United States, Vol. 1, pp. 729 - 732, June, 1998 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Simulating Strong Nonlinear Microwave Circuits Driven By a Large Number of Input Tones, European Microwave Conf. - EMC, Jerusalem, Israel, Vol. 27, pp. 820 - 825, September, 1997 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Contribución de la No Linealidad Ids(Vgs,Vds) a la Distorsión de Intermodulación en Transistores MESFETs y HEMTs, USNC/URSI National Radio Science Meeting, Bilbao, Spain, Vol. 1, pp. 15 - 18, September, 1997 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Simulação de Circuitos Não-Lineares para Aplicação em Comunicações Móveis, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 123 - 126, April, 1997 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Simulação da Resposta Estacionária de Circuitos Não-Lineares de Rádio-Frequência - Estado da Arte 1996 -, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 127 - 130, April, 1997 | BibTex
  • N.B.C. Carvalho, J. C. Pedro, Prediction of PLL Frequency Discriminator Non-Linear Distortion Using the Volterra Series Approach, IEEE International Symp. on Circuits and Systems - ISCAS, Atlanta, United States, Vol. 1, pp. 229 - 232, May, 1996 | BibTex
10Patents
  • A. Baghel, P. Pinho, N.B.C. Carvalho, Y. Bikrat, Compact anechoic chamber, metamaterial absorber, and uses thereof, PCT/IB2024/054984, PCT, 22-05-2023,
    | Abstract
  • N.B.C. Carvalho, R. Correia, Passive sensor system powered by wireless energy transmission, EP17825932, EPO, Granted, 05-12-2016,
    | Abstract
  • N.B.C. Carvalho, R. Correia, Passive sensor system powered by wireless energy transmission, US16466883, National, Granted, 05-12-2016, United States,
    | Abstract
  • R. Correia, N.B.C. Carvalho, Passive sensor system powered by wireless energy transmission, PCT/IB2017/057660, PCT, 05-12-2016,
    | Abstract
  • A. Oliveira, N.V.S. Silva, P.J. Jesus, N.B.C. Carvalho, J. S. Salgado, Método para o transporte em longa distância de sinal analógico CATV e extensor de alcance de sinal analógico CATV via transporte digital sobre fibra ótica, PT107651, National, Granted, 22-05-2014, Portugal,
    | Abstract
  • N.B.C. Carvalho, A. Boaventura, Sistema de controlo remoto sem pilhas, PT11186, National, Granted, 02-05-2013, Portugal,
    | Abstract
  • N.B.C. Carvalho, L. B. X. G Guenda, F. M. L. F. Ferreira, Dispositivo e método para seguimento que utiliza fotografias georreferenciadas, PT10931, National, Granted, 09-05-2011, Portugal,
    | Abstract
  • N.B.C. Carvalho, P. M. H. M. Matos, M. N. S. M. L. R. Rios, P. Claro, MRui Santos, Sistema integrado de monitorização e comunicação multi-canal para gestão de equipas de protecção civil, PT103616, National, Granted, 15-12-2006, Portugal
  • N.B.C. Carvalho, MRui Santos, P. Claro, Método para localizar pessoas ou objectos usando uma rede sem fios, PT103590, National, Granted, 17-10-2006, Portugal
  • N.B.C. Carvalho, J. C. Pedro, Sistema de medida de distorção não linear co-canal, PT102521, National, Granted, 09-10-2000, Portugal

Currently running projects3

Acronym Name Funding Agency Start date Ending date
Gestão CTI-IT Centro de Tecnologia e Interface IT - Instituto de Telecomunicações Next generation EU - Plano de Recuperação e Resiliência (PRR) - Componente 16 “Empresas 4.0” - TD-C16-i03 “Catalisação da Transformação Digital das Empresas” 01-01-2023 31-12-2025
NewSpacePortugal New Space Portugal IAPMEI 01-10-2021 31-12-2025
ORCIP Optical Radio Convergence Infrastructure for Communications and Power Delivering PO Centro 01-05-2017 30-04-2029

Closed Projects65

Acronym Name Funding Agency Start date Ending date
5G SI I&DT Copromoção Nr. 024539 - Componentes e serviços para redes 5G P2020 01-01-2018 30-06-2021
5G-PERFECTA SI I&DT Copromoção - Projeto de I&D à Escala Europeia Nr. 038190 - 5G-PERFECTA - 5G e próxima geração Desempenho móvel garantia de testes de conformidade P2020 01-11-2018 31-05-2021
AI-BEAM Intelligent Beamforming Metasurfaces for Future Telecommunications FCT/CMU 01-10-2020 31-03-2022
AME Advanced Microelectronics Engineering ICEP 01-10-2002 22-10-2003
AVEIRO STEAM City AVEIRO STEAM City EU/H2020 01-11-2018 01-05-2022
CICLORIA CICLORIA 01-09-2012 01-02-2013
CityCatalyst SI I&DT Empresarial (Programas Mobilizadores) Nr. 046119 - Catalisador para cidades sustentáveis P2020 01-07-2020 30-06-2023
CoLTeMEPAI Compensation of Long Term Memory Effects in Power Amplifier Intermodulation Distortion FCT/POSC 01-03-2005 28-02-2008
COST IC1301 COST-IC1301 WIPE EU/COST 01-10-2013 01-10-2017
CoViS PROJETOS DE I&DT EMPRESAS EM COPROMOÇÃO: COVID-19 Nr. 070090 - Contactless Vital Signs Monitoring in Nursing Homes using a Multimodal Approach P2020 15-10-2020 31-12-2021
CREATION CREATION – COGNITIVE RADIO TRANSCEIVER DESIGN FOR ENERGY EFFICIENT DATA TRANSMISSION FCT 01-04-2013 01-04-2018
DAAA RADIO-DRONE - Drone Active Antenna Array (DAAA) 01-04-2014 01-12-2014
D-EoL-TA SI I&DT Copromoção Nr. 049698 - D-EoL-TA: Digitalisation of end-of-line distributed testers for antennas P2020 01-03-2021 30-06-2023
DiRecTRadio All-Digital Reconfigurable System-on-Chip Transmitter for Cognitive Radio Systems IT/LA 01-07-2011 01-06-2013
FERROVIA 4.0 SI I&DT Empresarial (Programas Mobilizadores) Nr. 046111 - FERROVIA 4.0 P2020 01-07-2020 30-06-2023
FindIt FindIt ADI 08-11-2002 31-12-2004
FireTec Forest Fire Detection and Alarming Using Existing Telecommunications Infrastructure IT 01-09-2020 31-08-2023
FLEXICELL FLEXICELL ADI/QREN 01-01-2014 01-06-2015
GAMACHIP SI I&DT Copromoção Nr. 033688 - GAMACHIP Plataforma SDR integrada e multifuncional para comunicações espaciais P2020 01-06-2018 30-11-2020
GANSAT GANSAT 01-11-2013 01-11-2016
GaNSpace GaNSpace EFACEC 01-07-2008 01-05-2010
GreenTel GreenTel PT Inovação 01-11-2010 01-05-2012
IDTS SI I&DT Copromoção Nr. 003522 - IDTS Infotainment Distributed TestSystem P2020 01-10-2015 30-09-2018
I-Garment I - GARMENT - Integrated System for Management of Civil Protection Units ESA-ESTEC 01-01-2004 01-04-2005
IMMINENCE Projetos de I&D Industrial à Escala Europeia Nr. 112314 - IMMINENCE: Intelligent Management of next generation MobIle NEtworks aNd serviCEs P2020 01-06-2021 30-06-2023
INFANTE SI I&DT Copromoção Nr. 024534 - INFANTE Satélite para aplicações marítimas e comunicações a partir de constelações P2020 01-11-2017 31-10-2021
LaSiBeME Large Signal Measurements for Nonlinear Behavioral Model Extraction CRUP 01-01-2007 01-12-2008
LDMOSCA Low Distortion RF MOS Circuits Advances FCT/POCTI 01-01-2001 31-12-2002
LOPES Person Location ADI, TELESAL 01-03-2007 01-07-2008
LOPIX LOPIX - Low Power Information Exchange QREN 01-08-2012 01-07-2014
MAGAL SI I&DT Copromoção - Parceria Internacional Nr. 045916 - Magal Constellation P2020 01-07-2020 30-06-2022
MEGaN Model Extraction of GaN Transistors FCT/POCTI 01-01-2004 31-12-2005
MIMIC-5G Mixed-Signal Multi-Domain Characterization Setup for Design and Test of 5G Systems National Instruments 01-11-2015 01-04-2017
MobiWise MobiWise: from mobile sensing to mobility advising P2020 01-01-2017 09-01-2021
MULTIPLEXER MUX PT Inovação 01-03-2012 01-03-2013
MuSILAGE Multi-sine wave generator IT/LA 01-08-2005 01-02-2007
Napis NAPIS - NAvy Positioning and Identification Systems Marinha Portuguesa 01-10-2009 01-01-2012
OALMT Optimização de Amplificadores Linearizados em Presença de Sinais Reais Multi-Tom CRUP 01-01-2003 31-12-2004
OPAMS Optimum Power Amplifiers for Modulated Signals FCT/POCTI 01-07-2002 30-06-2004
PANORAMA PANORAMA - Plataforma Rádio PT Inovação 01-01-2009 01-06-2011
PANORAMA II Desenvolvimento de um Sistema de Telecomunicações sustentado em Plataformas Ópticas e de Rádio Avançadas com gestão integrada PT Inovação 01-01-2013 01-01-2015
PHOAM Photonic Assisted Multibeam Phased Array Antenna ESA 01-04-2022 30-06-2024
PLANE SI I&DT Copromoção Nr. 039993 - PLANE - PLataforma Aviónica para NEwspace P2020 01-06-2019 31-10-2021
PROENERGY-WSN Prototypes for Efficient Energy Self-sustainable Wireless Sensor Networks FCT/PTDC 01-01-2012 01-02-2015
RadioVoip RadioVoIP ADI 01-01-2012 01-06-2015
RaTON Radio Techniques over Optical access Networks IT/LA 01-09-2005 01-05-2007
RETIOT Utilização de Tecnologias de Reflectometría no melhoramento do futuro Internet das Coisas e Sistemas Ciber-Físicos P2020 09-01-2017 30-06-2021
RFSense Context Awareness through RF Sensing of Mobile Human Motion FCT 01-01-2020 31-12-2022
RnMonitor Online Monitoring Infrastructure and Active Mitigation Strategies for Indoor Radon Gas in Public Buildings on the Northern Region of Portugal FCT/COMPETE/FEDER 01-09-2017 31-01-2020
ShopAnalytics ShopAnalytics: Sistema de Rastreamento e Analytics de Consumidores em Espaços Comerciais Indoor Norte2020 - Programa Operacional Regional do Norte 01-04-2016 30-11-2018
SPIDER Sensor Platform & network for Indoor Deployment and Exterior-based Radiofrequency awareness EU/H2020 01-11-2016 01-11-2017
STRx SI I&DT Copromoção Nr. 033623 - STRx - Sistema de transmissão e receção de sinal de orientação eletrónica para a próxima geração de constelações de satélites P2020 01-05-2019 31-12-2022
TACCS TACCS - Cognitive Radios Adaptable Wireless Transceivers FCT/PTDC 01-01-2010 01-12-2012
TARGET Top Amplifier Research Group in an European Team EU 01-01-2004 31-12-2006
Tech2CONNECT Tech2CONNECT ESA 01-02-2024 31-07-2024
TRIVial Radio Interactive Transmission of Local Video ADI 01-04-2003 31-03-2005
TROANTE TROANTE – DESENVOLVIMENTO DE TECNOLOGIA UAV PARA UTILIZAÇÃO DE ÂMBITO CONJUNTO E DUAL Ministério da Defesa 01-10-2015 01-10-2018
VirtualB VirtualB PT Inovação 01-04-2008 01-02-2009
WIBCAAST WIBCAAST Ampleon 01-01-2020 01-01-2024
WIDEMONITOR SI I&DT Copromoção Nr. 003460 - WIDEMONITOR Sistema de monitorização de espectro P2020 01-11-2015 31-01-2018
WIFI2020 WIFI2020 PT Inovação 01-07-2017 01-07-2018
WIFID WIFI DISTRIBUTION PT Inovação 01-03-2012 01-03-2013
WIFILOCA Location Based Services in Wi-Fi, Bluetooth Systems PT Inovação 01-04-2005 30-06-2006
WMAN WMAN QREN 01-09-2013 01-06-2015
WST4IIoT WS4IIoT P2020 01-10-2016 01-10-2018
23Awards
  • R. A. M. Pereira, V. Oliveira, H. Ribeiro, P. Capitão, R. Torres, H. C. Chaves, N.B.C. Carvalho, Outstanding Student Design Demonstrator Award WPTCE 2024, Wireless Powered Flight Drone, 01-05-2024
  • R. Correia, N.B.C. Carvalho, 1st place IEEE Portugal Best PhD, Passive Backscatter Sensors for IoT applications in IEEE Portugal Best PhD, 01-10-2021
  • R. Correia, N.B.C. Carvalho, Fraunhofer Portugal Challenge 2019, 2nd place in the Ph.D. Category, 01-10-2019
  • M. Jordão, D. Belo, N.B.C. Carvalho, Active Antenna Array Characterization for Massive MIMO 5G Scenarios, Best Interactive Forum Award, 91st ARFTG Microwave Measurement Conference (ARFTG), Philadelphia, 01-06-2018
  • R. Correia, M. Jordão, D. Belo, F. Pereira, N.B.C. Carvalho, Backscatter Radio, IMS 2018 Backscatter Radio Student Design Competition, First Place Award (TC: 24 RFID Technologies), 01-06-2018
  • D. Belo, R. Correia, P. Pinho, N.B.C. Carvalho, University of Aveiro - Research Day 2017, Research Day 2017, 01-06-2017
  • R. Correia, N.B.C. Carvalho, 1st place ANACOM-URSI Portugal prize, 10º Congresso do Comité Português da URSI, 01-11-2016
  • R. Correia, N.B.C. Carvalho, 1st place Student Poster Competition, 6th Workshop WIPE (Wireless Power Transmission for Sustainable Electronics), 01-05-2016
  • S.I. Lopes, J. Vieira, N.B.C. Carvalho, Fraunhofer Portugal Challenge 2015, 1st place in the Ph.D. Category, 01-10-2015
  • R. Correia, N.B.C. Carvalho, S. Kawasaki, 3rd place Student Paper Competition, IEEE WPTC (Wireless Power Transfer Conference), 01-05-2015
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Wireless energy harvesting design competition at the International Microwave Symposium, Second place, 01-05-2015
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Research day 2014 at the University of Aveiro (poster session), Best poster award, 01-06-2014
  • R. D. Fernandes, J. N. Matos, N.B.C. Carvalho, Wireless Power Transfer Conference 2014, Best paper award, 01-05-2014
  • A.P. Prata, A. Oliveira, N.B.C. Carvalho, Undergraduate Student Design Competition for Software Defined Radio and Signal Processing, First prize award in Student Design Competition for Software Defined Radio and Signal Processing at International Microwave Symposium 2013, sponsored by IEEE MTT-S., 01-06-2013
  • D. Ribeiro, P.M. Cruz, N.B.C. Carvalho, Best Student Paper Award 2012 - URSI Portuguese Committee, Best Student Paper Award at the 6th Conference of URSI Portuguese Committee with the paper entitled "Evaluation of Comb Generator Performance for Nonlinear Measurements on Mixed-Domain Instrumentation"., 01-11-2012
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, MTT Software Defined Radio and Digital Signal Processing, Second place at the IMS2012 Software Defined Radio and Digital Signal Processing Student Design Competition, 01-06-2012
  • P.M. Cruz, N.B.C. Carvalho, M.E. Valkama, Best Student Presentation Award COST Action IC0803, Work: “Evaluation of Second-Order Bandpass Sampling Receivers for Software Defined Radio” Location: 8th MC Meeting and Workshop of COST IC0803, Belfast, United Kingdom, 01-05-2012
  • N.V.S. Silva, A. Oliveira, N.B.C. Carvalho, RWS Best Student Paper, Finalist at the IEEE Radio & Wireless Week Best Student Paper Contest, 01-01-2012
  • R. D. Fernandes, N.B.C. Carvalho, J. N. Matos, Fraunhofer Portugal Challenge 2011, Winner of the MSc category, 01-10-2011
  • P.M. Cruz, N.B.C. Carvalho, 3rd place GAAS Association Student Fellowship for EuMIC 2009, Third place in Gallium Arsenide Application Symposium Association Student Fellowship 2009 given at European Microwave Integrated Circuits Conference (EuMIC) in Rome, Italy, 01-09-2009
  • N.B.C. Carvalho, J. C. Pedro, MTT Student Paper Contest (3rd Place), Third place at the Student Paper Contest in the IEEE Microwave Theory and Techniques Symposium, Baltimore, USA, 20-06-1998
  • N.B.C. Carvalho, Prémio Engº Ferreira Pinto Basto, Best student in Electronics and Telecommunications Engineer in the year 1994-1995 at Aveiro University, this prize was granted by ALCATEL Portugal., 07-10-1996
  • N.B.C. Carvalho, Best student in Electronics and Telecommunications Engineer at UA, Best student in Engineer in the year 1995 at Aveiro University, this prize was granted by Portuguese Engineers Association, 15-06-1996
7Miscellaneous
  • M. Luís, F. Pereira, R. Correia, H. Sampaio, R. Chaves, R. Oliveira, L. F. M. A. F. M. Almeida, M. Jordão, A. Oliveira, N.B.C. Carvalho, S. Sargento, Backscatter and Vehicular Communications for Cars and Boats’ networks: A Platform for Users Awareness, Seminars, 26th RTCM - Rede Temática de Comunicações Móveis, UC, 01-01-2019 | Link
  • F. J. Velez, N.B.C. Carvalho, J. Ferreira, J. Vieira, Final CREaTION Workshop, Seminars, 5th February 2016, Sala do Senado da Reitoria da Universidade de Aveiro (50 attendees), 01-02-2016 | Link
  • J. Ferreira, J. Silva, F. J. Velez, J. Vieira, N.B.C. Carvalho, 2nd Workshop from the CREaTION Project in Research Lines of Excellence, Seminars, INESC TEC, Porto, 15 Oct. 2014, 01-10-2014 | Link
  • J. Tavares, N. Barroca, R. Gonçalves, Henrique M. Saraiva M. Saraiva, Luis M. Borges, F. J. Velez, C. Loss, , P. Pinho, N.B.C. Carvalho, Spectrum Opportunities for Electromagnetic Energy Harvesting from 350 MHz to 3 GHz, Seminars, 16º Seminário RTCM - Rede Temática de Comunicações Móveis, 01-02-2013
  • N.B.C. Carvalho, Como Funcionam os Telemóveis, Seminars, Semana Aberta na UA, 01-11-2002
  • N.B.C. Carvalho, The Effects of Nonlinear Distortion in Radio Systems, Seminars, As Telecomunicações para a Presente Década, 01-04-2001
  • N.B.C. Carvalho, J. C. Pedro, Multi-tone Figures of Merit, Version 1, Software Package, Invited Talks, 01-01-2000
1Prototypes
  • S.I. Lopes, J. Vieira, N.B.C. Carvalho, Akkurate: Smartphone-based Head Positioning
3Conference Committees
  • European Microwave Week/European Microwave Conf., Sessions Chairman, 2011
  • IEEE International Symp. on Microwave Theory and Tech., Technical Programme Committee, 2011
  • INMMIC, Organizing Committee, 2006
7Editorial Committees
  • Editor-in-chief, Wireless Power Transfer, 01-10-2017 - today
  • Associate Editor, Wireless Power Transfer, 01-10-2015 - 30-09-2017
  • Associate Editor, IET Microwaves, Antennas and Propagation, 01-07-2015 - 01-12-2017
  • Associate Editor, IEEE Transactions on Microwave Theory and Techniques, 01-10-2014 - 01-10-2017
  • Associate Editor, IEEE Microwave Magazine, 01-01-2014 - today
  • Conference Vice-Chair, 28-01-2006 - 31-01-2006
  • Guest Editor, 01-09-2005 - 01-09-2006
1Refereeing Conferences
  • European Microwave Week/European Microwave Conf.
    2009, 1 review(s);
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