Francisco André Corrêa Alegria

Francisco Alegria

Academic position:	Assistant Professor
Joining date:	01-01-2001
Roles in IT:	Senior Researcher
Thematic Line:	Basic Sciences and Enabling Technologies
Group:	Instrumentation and Measurements – Lx

Email: Send Email
Address: IT – Lisboa
Instituto Superior Técnico - Torre Norte - Piso 10
Av. Rovisco Pais, 1
1049 - 001 Lisboa
Tel: +351 21 841 84 54

Alternative Personal Web Page

http://www.cienciavitae.pt/https://www.cienciavitae.pt//8915-16D1-229F

https://www.orcid.org/0000-0003-0854-489X

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03-10-2025

32 Researchers of Instituto de Telecomunicações on the Top 2% of Stanford-Elsevier Most-cited Scientists Worldwide

The ranking highlights researchers whose publications have had the greatest impact within the academic community and have made significant contributions to global scientific progress.

15-10-2024

News@IT - Latest issue

In our latest newsletter, Issue 115, we are pleased to feature an exclusive interview with Carlos Salema, a distinguished scientist and one of the founding members of the Instituto de Telecomunicações.

30-09-2024

IT researchers in the top 2% of most-cited scientists worldwide

Researchers from the Instituto de Telecomunicações have earned prestigious recognition on both lists, which include more than 200,000 names. Twenty-eight IT researchers are recognized for their career-long contributions, and twenty-three for their single-year impact, resulting in fifty-one nominations.

24-10-2023

IT Researchers ranked among the Top 2% Scientists Worldwide by Stanford University

A total of thirty IT researchers are among the most-cited scientists worldwide, falling within the top 2% in their respective scientific fields.

26-11-2020

IT researchers among the world’s top 100,000 scientists

IT researchers have figured among the world’s most influential scientists, according to a new ranking method developed by scientists at Stanford University.

Scientific Achievements

Degrees

PhD, Instituto Superior Técnico, 07-06-2002
MSc, Instituto Superior Técnico, 26-10-1997
Licenciatura, Instituto Superior Técnico, 31-10-1995

Affiliations

Instituto Superior Técnico, 12-03-1997, Associate Professor

Expertise Topics

Characterization of Analog to Digital Converters
Calibration of Measuring Instruments
Instrumentation and Measurement

Academic Activities

11Lecture courses

Instrumentação e Medidas, , Lic. Engenharia Electr. e Computadores

Electrotecnia Teórica/I, , Lic. Engenharia Electr. e Computadores

Electrotecnia Teórica II, , Lic. Engenharia Electr. e Computadores

Instrumentação Electrónica/Instrumentação e Medida, , Lic. Engenharia Aeroespacial)

Electrotecnia Teórica, , Lic. Engenharia Electr. e Computadores

Sistemas de Medida em Radiofrequência, , Mestrado em Engenharia Electrotácnica e de Computadores

Electrónica de Computadores, , Licenciatura em Engenharia Electrotécnica e de Computadores
Advanced Mesurements in Radiofrequency, , Diploma de Estudos Avançados em Engenharia Electrotécnica e de Computadores
Advanced Measurements in Radiofrequency, , Diploma de Estudos Avançados em Engenharia Electrotécnica e de Computadores
Sensors and Actuators, Instituto Superior Técnico, Mestrado Engenharia Electr. e Computadores
Smart Sensors and Actuators, Instituto Superior Técnico, Mestrado em Engenharia Eletrónica

1Supervision of PhD theses

Publications

3Books

F. Alegria, The Electron and the Lamb Shift, World Scientific Publishing, Singapore, 2024,
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F. Alegria, Sensores e Atuadores, IST Press, Lisbon, 2021,
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F. Alegria, Sensors and Actuartors, World Scientific Publishing, Singapore, 2021,
| BibTex

2Books Chapters

A. Moschita, D. M. Macii, F. Alegria, P. Carbone, Histogram-Based Techniques for ADC Testing, Chapter in, Design, Modeling and Testing of Data Converters - Signals and Communication Technology, P. Carbone, Sayfe Kiaei, Fang Xu, Springer, Berlin, 2013
E. Martinho, F. Alegria, C. G. Grangeia, A Dionísio, F. Almeida, Electrical Resistivity Imaging: Overview and a Case Study in Stone Cultural Heritage, Chapter in, 3D Imaging: Theory, Technology and Applications, Emerson H. Duke, Stephen R. Aguirre, Nova Publisher, 2010

63Papers in Journals

F. Alegria, Sine-Fitting Residual Root Mean Square, Mean, and Variance in the Presence of Phase Noise or Jitter, SCI, Vol. 7, No. 4, pp. 136 - 136, October, 2025,
| Abstract | BibTex
F. Alegria, Estimation of the Root Mean Square of the Residuals of Sine Fitting in the Presence of Phase Noise or Jitter, IEEE Access, Vol. 13, No., pp. 150028 - 150036, September, 2025,
| Abstract | Full text (PDF 3 MBs) | BibTex
D. Pasadas, M. Barzegar, M. Zhang, F. Alegria, A. L. Ribeiro, H. Ramos, Damage Imaging in a CFRP Plate using UGW-based Handheld Probe, IEEE Sensors Journal, Vol., No., pp. 1 - 1, September, 2025,
| Abstract | Full text (PDF 1 MB) | BibTex
M. Joaquim, F. Alegria, SNR Estimation Uncertainty in ADC Testing Caused by Additive Noise with Experimental Validation, Journal of the Franklin Institute, Vol., No., pp. 108105 - 108105, September, 2025,
| Abstract | BibTex
F. Alegria, Expected value of the root mean square of sinefitting residuals in the presence of phase noise or sampling jitter, tm - Technisches Messen, Vol., No., pp. -, July, 2025,
| Abstract | BibTex
F. Alegria, Analytical derivation of sinusoidal offset estimation for finite-time series in the presence of phase noise or jitter, Measurement Science and Technology, Vol. 36, No. 8, pp. 086105 - 086105, July, 2025,
| Abstract | BibTex
F. Alegria, Phase noise contribution to the precision of differential non-linearity estimation in analog-to-digital converters using the code density test, Acta IMEKO, Vol. 14, No. 2, pp. 1 - 9, June, 2025,
| Abstract | BibTex
F. Alegria, Contribution of Jitter and Phase Noise to the Precision of Sinusoidal Amplitude Estimation Using Coherent Sampling, SCI, Vol. 7, No. 2, pp. 44 - 44, April, 2025,
| Abstract | Full text (PDF 3 MBs) | BibTex
M. Barzegar, F. Alegria, Experimental validation of the precision of sinusoidal amplitude estimation using a least squares procedure in the presence of additive noise, Scientific Reports, Vol. 15, No. 1, pp. -, April, 2025,
| Abstract | Full text (PDF 3 MBs) | BibTex
F. Alegria, Phase Noise Influence on the Transfer Function Estimation of Analog to Digital Converters Using the Histogram Method, IEEE Access, Vol. 13, No., pp. 32051 - 32062, February, 2025,
| Abstract | Full text (PDF 5 MBs) | BibTex
F. Alegria, Expanding the IEEE 1057 Standard Jitter Test of Waveform Recorders to Include Simultaneous Voltage Noise Estimation, IEEE Access, Vol. 12, No. 1, pp. 103018 - 103025, August, 2024,
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F. Alegria, Uncertainty of the Initial Phase Estimation of a Sinewave in the Presence of Phase Noise, Additive Noise or Jitter, Journal of the Franklin Institute, Vol. 361, No. 15, pp. 107116 - 107116, July, 2024,
| Abstract | Full text (PDF 45 KBs) | BibTex
F. Alegria, L. X. Xie, D. Pasadas, Study of the Bias of the Initial Phase Estimation of a Sinewave of Known Frequency in the Presence of Phase Noise, Sensors, Vol. 24, No. 12, pp. 3730 - 3730, June, 2024,
| Abstract | Full text (PDF 403 KBs) | BibTex
L. X. Xie, P. Baskaran, A. L. Ribeiro, F. Alegria, H. Ramos, Classification of Corrosion Severity in SPCC Steels Using Eddy Current Testing and Supervised Machine Learning Models, Sensors, Vol. 24, No. 7, pp. 2259 - 2259, April, 2024,
| Abstract | Full text (PDF 5 MBs) | BibTex
F. Alegria, Using digital methods in active power measurement, Acta IMEKO, Vol. 12, No. 4, pp. 1 - 8, December, 2023,
| Abstract | BibTex
F. Alegria, Number of samples to use in estimating sinewave amplitude in the presence of noise, tm - Technisches Messen, Vol. 91, No. 2, pp. 116 - 121, November, 2023,
| Abstract | BibTex
F. Alegria, Precision of sinewave amplitude estimation in the presence of additive noise and quantization error, journal of electrical engineering, Vol. 74, No. 5, pp. 374 - 381, October, 2023,
| Abstract | BibTex
F. Alegria, Bias of the independently based gain and offset error in ADC testing using the histogram method, Measurement, Vol. 218, No. 1, pp. 113181 - 113181, August, 2023,
| Abstract | Full text (PDF 1 MB) | BibTex
F. Alegria, Linearity test of triangular waveform generators, tm - Technisches Messen, Vol. 90, No. 10, pp. 683 - 687, August, 2023,
| Abstract | BibTex
F. Alegria, Random noise test of analog-to-digital converters, Acta IMEKO, Vol. 12, No. 2, pp. 1 - 8, June, 2023,
| Abstract | BibTex
O. Canelas, R. Ferreira Lage Ferreira, S. L. Guillén Ludeña, F. Alegria, A. H. C. Heleno Cardoso, Three-dimensional flow structure at fixed 70° open-channel confluence with bed discordance, Journal of Hydraulic Research/De Recherches Hydrauliques, Vol. 1, No. 1, pp. 1 - 13, May, 2019,
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S. L. Guillén Ludeña, M. P. F. Rodrigues Pereira da Franca, F. Alegria, A.J. Schleiss, A. H. C. Heleno Cardoso, Hydromorphodynamic effects of the width ratio and of a local tributary widening on discordant confluences, Geomorphology, Vol. 293, No. 1, pp. 289 - 304, September, 2017,
| Abstract | Full text (PDF 3 MBs) | BibTex
LM Mendes, F. Antico, P. Sanches, F. Alegria, R. Aleixo, R. Ferreira Lage Ferreira, A particle counting system for calculation of bedload fluxes, Measurement Science and Technology, Vol. 27, No. 12, pp. 125305 - 125305, October, 2016,
| Abstract | Full text (PDF 2 MBs) | BibTex
F. Alegria, Precision of Sinefitting-Based Total Harmonic Distortion Estimator, Metrology and Measurement Systems, Vol. XXIII, No. 1, pp. 37 - 46, March, 2016,
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J. Lopes, J. R. Rocha, Redondo, F. Alegria, Improvement of the Mass Spectrometry Process on an Ion Implantation, Open Journal of Optimization, Vol. 5, No. 1, pp. 31 - 34, March, 2016,
| Abstract | Full text (PDF 776 KBs) | BibTex
R. Queirós, F. Alegria, P.M. Girão, A. Serra, A multi-frequency method for ultrasonic ranging, Ultrasonics, Vol. 63, No. 1, pp. 86 - 93, December, 2015,
| Abstract | Full text (PDF 1 MB) | BibTex
F. Alegria, Measurement Challenges in Trying to Understand Our Brain, Measurement, Vol. 48, No. 8, pp. 2950 - 2962, October, 2013,
| Abstract | Full text (PDF 328 KBs) | BibTex
E. Martinho, M. A. Abreu, A. O. Oliveira, F. Alegria, M. E. P. Pampulha, Monitoring of Biophysicochemical Changes in a Silty Clay Soil Contaminated with LNAPL’s, Geoderma, Vol. 197-198, No. 1, pp. 108 - 116, April, 2013,
| Abstract | BibTex
F. Alegria, E. Molino-Minero-Re, S. Shariat-Panahi, Evaluation of a four-point sine wave frequency estimator for portable DSP based instrumentation, Measurement, Vol. 45, No. 7, pp. 1866 - 1871, August, 2012,
| Abstract | BibTex
E. Martinho, F. Alegria, A Dionísio, C. G. Grangeia, F. Almeida, 3D-resistivity imaging and distribution of water soluble salts in Portuguese Renaissance stone bas-reliefs, Engineering Geology, Vol. 141-142, No. 1, pp. 33 - 44, April, 2012,
| Abstract | Full text (PDF 3 MBs) | BibTex
F. Alegria, Precision of Harmonic Amplitude Estimation on Jitter Corrupted Data Using Sine Fitting, Signal Processing, Vol. 92, No. 3, pp. 807 - 818, March, 2012,
| Abstract | Full text (PDF 405 KBs) | BibTex
F. Alegria, Choosing Between Terminal and Independently Based Gain and Offset Error in the ADC Histogram Test, IEEE Transactions on Instrumentation and Measurement, Vol. 61, No. 1, pp. 9 - 16, January, 2012,
| Abstract | Full text (PDF 483 KBs) | BibTex
J. Lopes, F. Alegria, Redondo, J. R. Rocha, E. A. Alves, Mass spectrometry improvement on an high current ion implanter, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 269, No. 24, pp. 3222 - 3225, December, 2011 | Full text (PDF 521 KBs) | BibTex
F. Alegria, On the Bias of Terminal Based Gain and Offset Estimation Using the ADC Histogram Test Method, Metrology and Measurement Systems, Vol. 18, No. 1, pp. 3 - 12, March, 2011 | BibTex
R. Queirós, F. Alegria, P.M. Girão, A. Serra, Cross-correlation and Sine-fitting Techniques for High Resolution Ultrasonic Ranging, IEEE Transactions on Instrumentation and Measurement, Vol. 59, No. 12, pp. 3227 - 3236, December, 2010 | Full text (PDF 1 MB) | BibTex
F. Alegria, A. Serra, Gaussian Jitter Induced Bias of Sine Wave Amplitude Estimation Using Three-Parameter Sine Fitting, IEEE Transactions on Instrumentation and Measurement, Vol. 59, No. 9, pp. 2328 - 2333, September, 2010,
| Abstract | Full text (PDF 403 KBs) | BibTex
Lopes, F. Alegria, Redondo, J. R. Rocha, E. A. Alves, Computer Control of a 3 MV Van De Graaff Accelerator, Metrology and Measurement Systems, Vol. 17, No. 3, pp. na - na, August, 2010 | Full text (PDF 833 KBs) | BibTex
A. L. Ribeiro, F. Alegria, O. Postolache, H. Ramos, Liftoff Correction Based on the Spatial Spectral Behavior of Eddy-Current Images, IEEE Transactions on Instrumentation and Measurement, Vol. 59, No. 5, pp. 1362 - 1367, May, 2010,
| Abstract | Full text (PDF 1 MB) | BibTex
F. Alegria, Travassos, The Choice Between Analogue or Digital AC Power Measurement in a Vodafone Base Station Data Logger, Metrology and Measurement Systems, Vol. 17, No. 1, pp. 65 - 76, March, 2010 | Full text (PDF 409 KBs) | BibTex
E. Martinho, M. A. Abreu, M. P. Pampulha, F. Alegria, A. O. Oliveira, F. Almeida, An Experimental Study of the Diesel Biodegradation Effects on Soil Biogeophysical Parameters, Water, Air, and Soil Pollution, Vol. 206, No. 1, pp. 139 - 154, January, 2010 | Full text (PDF 479 KBs) | BibTex
F. Alegria, Study of the Random Noise Test of Analog-to-Digital Converters, Metrology and Measurement Systems, Vol. 16, No. 4, pp. 545 - 556, December, 2009 | Full text (PDF 1 MB) | BibTex
F. Alegria, A. Serra, The Histogram Test of ADCs with Sinusoidal Stimulus is Unbiased by Phase Noise, IEEE Transactions on Instrumentation and Measurement, Vol. 58, No. 11, pp. 3847 - 3854, November, 2009,
| Abstract | Full text (PDF 635 KBs) | BibTex
F. Alegria, Contribution of Jitter to the Error of Amplitude Estimation of a Sinusoidal Signal, Metrology and Measurement Systems, Vol. 16, No. 3, pp. 465 - 478, October, 2009 | Full text (PDF 260 KBs) | BibTex
F. Alegria, E. Martinho, F. Almeida, Measuring soil contamination with the time domain induced polarization method using LabVIEW, Measurement, Vol. 42, No. 7, pp. 1082 - 1091, August, 2009,
| Abstract | Full text (PDF 1 MB) | BibTex
S. Shariat-Panahi, F. Alegria, A. Manuel, A. Serra, IEEE 1057 Jitter Test of Waveform Recorders, IEEE Transactions on Instrumentation and Measurement, Vol. 58, No. 7, pp. 2234 - 2244, July, 2009,
| Abstract | Full text (PDF 653 KBs) | BibTex
F. Alegria, Bias of amplitude estimation using three-parameter sine fitting in the presence of additive noise, Measurement, Vol. 42, No. 5, pp. 748 - 756, June, 2009 | Full text (PDF 365 KBs) | BibTex
S. Shariat-Panahi, F. Alegria, A. Manuel, Design and Test of a High Resolution Acquisition System for Marine Seismology, IEEE Instrumentation & Measurement Magazine, Vol. 12, No. 2, pp. 8 - 15, April, 2009,
| Abstract | Full text (PDF 4 MBs) | BibTex
F. Alegria, A. Serra, Precision of Independently Based Gain and Offset Error of an ADC using the Histogram Method, IEEE Transactions on Instrumentation and Measurement, Vol. 58, No. 3, pp. 512 - 521, March, 2009,
| Abstract | Full text (PDF 377 KBs) | BibTex
F. Alegria, A. Serra, Standard Histogram Test Precision of ADC Gain and Offset Error Estimation, IEEE Transactions on Instrumentation and Measurement, Vol. 56, No. 5, pp. 1527 - 1531, October, 2007 | Full text (PDF 187 KBs) | BibTex
F. Alegria, A. Serra, ADC Transfer Function Types - A Review, Computer Standards and Interfaces, Vol. 28, No. 5, pp. 553 - 559, June, 2006 | Full text (PDF 222 KBs) | BibTex
F. Alegria, A. Serra, Overdrive in the Ramp Histogram Test of ADCs, IEEE Transactions on Instrumentation and Measurement, Vol. 54, No. 6, pp. 2305 - 2309, December, 2005 | Full text (PDF 234 KBs) | BibTex
F. Alegria, A. Moschita, P. Carbone, A. Serra, D. Petri, Effective ADC Linearity Testing, IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 52, No. 7, pp. 1267 - 1275, July, 2005 | Full text (PDF 668 KBs) | BibTex
F. Alegria, A. Serra, Uncertainty of ADC Random Noise Estimates Obtained With the IEEE 1057 Standard Test, IEEE Transactions on Instrumentation and Measurement, Vol. 54, No. 1, pp. 110 - 116, February, 2005 | Full text (PDF 293 KBs) | BibTex
F. Alegria, P.M. Girão, V. Haasz, A. Serra, Performance of Data Acquisition Systems from User’s Point of View, IEEE Transactions on Instrumentation and Measurement, Vol. 53, No. 4, pp. 907 - 914, August, 2004 | Full text (PDF 258 KBs) | BibTex
F. Alegria, A. Serra, Error in the estimation of transition voltages with the standard histogram test of ADCs, Measurement, Vol. 35, No. 4, pp. 389 - 397, June, 2004 | Full text (PDF 500 KBs) | BibTex
A. Serra, F. Alegria, RCM Martins, M. F. Silva, Analog to digital converters testing – New proposals, Computer Standards and Interfaces, Vol. 26, No. 1, pp. 3 - 13, January, 2004 | BibTex
F. Alegria, A. Serra, Variance of the cumulative histogram of ADCs due to frequency errors, IEEE Transactions on Instrumentation and Measurement, Vol. 52, No. 1, pp. 69 - 74, February, 2003 | BibTex
P Arpaia, A. Serra, P. Daponte, F. Alegria, Performance analysis of an ADC histogram test using small triangular waves, IEEE Transactions on Instrumentation and Measurement, Vol. 51, No. 4, pp. 723 - 729, August, 2002 | BibTex
F. Alegria, P Arpaia, A. Serra, P. Daponte, Performance Analysis of an ADC Histogram Test Using Small Triangular Waves, IEEE Transactions on Instrumentation and Measurement, Vol. 51, No. 4, pp. 723 - 729, August, 2002 | Full text (PDF 403 KBs) | BibTex
F. Alegria, A. Serra, An ADC Histogram Test Based on Small-Amplitude Waves, Measurement, Vol. 31, No. 4, pp. 271 - 279, June, 2002 | Full text (PDF 585 KBs) | BibTex
F. Alegria, A. Serra, Influence of Frequency Errors in the Variance of the Cumulative Histogram, IEEE Transactions on Instrumentation and Measurement, Vol. 50, No. 2, pp. 461 - 464, April, 2001 | Full text (PDF 131 KBs) | BibTex
F. Alegria, A. Serra, Computer Vision Aplied to the Autmatic Calibration of Measuring Instruments, Measurement, Vol. 28, No. 3, pp. 185 - 195, October, 2000 | Full text (PDF 2 MBs) | BibTex
F. Alegria, A. Serra, Automatic Calibration of Analog and Digital Measuring Instruments Using Computer Vision, IEEE Transactions on Instrumentation and Measurement, Vol. 49, No. 1, pp. 94 - 99, February, 2000 | Full text (PDF 379 KBs) | BibTex

48Papers in Conferences

L. X. Xie, P. Baskaran, A. L. Ribeiro, F. Alegria, B. Feng, H. Ramos, High Sensitive ECT Probe for Detection of Deeply Buried Defects, IEEE International Instrumentation and Technology Conf. - I2MTC, Chemnitz, Germany, May, 2025 | BibTex
F. Antico, P. Sanches, LM Mendes, F. Alegria, R. Aleixo, R. Ferreira Lage Ferreira, A particle counter prototype and video imaging techniques for calculation of bedload fluxes, International Symposium on River Sedimentation, Stuttgart, Germany, Vol. 1, pp. 19 - 22, September, 2016 | BibTex
R. Aleixo, LM Mendes, F. Antico, P. Sanches, F. Alegria, R. Ferreira Lage Ferreira, Assessment Of Video Imaging And Particle Counting Techniques For Calculation Of Bedload Fluxes, IAHR World Congress, The Hague, Netherlands, Vol. 1, pp. 1 - 1, July, 2015 | BibTex
F. Alegria, O. B. Birhukova, S. L. Guillén Ludeña, A. H. C. Heleno Cardoso, Three dimensional flow field at confluent fixed-bed open channels, River Flow, Lausanne, Switzerland, Vol. 1, pp. 1007 - 1014, September, 2014,
| Abstract | BibTex
J. Lopes, J. Rocha, Redondo, F. Alegria, High Resolution Ion Beam Profile Measurement System, International Conf. on Accelerator and Large Experimental Physics Control Systems - icalepcs, Grenoble, France, Vol. 1, pp. 164 - 167, October, 2011 | BibTex
F. Alegria, A Dionísio, F. Almeida, E. Martinho, 3-D Electrical Resistivity Imaging as a Smart Monitoring Method for Identification of Moisture Sources in Stone Cultural Heritage, European Workshop on Cultural Heritage Perservation - EWCHP, Berlin, Germany, Vol. 1, pp. 218 - 223, September, 2011 | BibTex
D. Pasadas, H. Ramos, F. Alegria, Handheld Instrument to Detect Defects in Conductive Plates with a Planar Probe, IEEE Instrumentation and Measurement Technology Conf., Shangai, China, Vol. 00, pp. 144 - 149, May, 2011,
| Abstract | Full text (PDF 444 KBs) | BibTex
J. Lopes, F. Alegria, Redondo, Optimization of a Mass Spectrometry Process, International Conf. on the Application of Accelerators in Research and Industry - CAARI 2010, Fort Worth, United States, Vol. 1336, pp. 67 - 69, August, 2010 | BibTex
F. Alegria, A. Serra, Comparison Between Two Digital Methods for Active Power Measurement, IEEE International Conf. on Industrial Technology, Viña del Mar, Chile, Vol. -, pp. - - -, March, 2010,
| Abstract | Full text (PDF 317 KBs) | BibTex
F. Alegria, F. Carvalho, P. Agulha, D. Pasadas, O. Postolache, H. Ramos, A. L. Ribeiro, 2D Magnetic Field Mobile Sensing System for Eddy Current Testing, IEEE Sensors, Christchurch, New Zealand, Vol. -, pp. - - -, October, 2009,
| Abstract | Full text (PDF 571 KBs) | BibTex
F. Alegria, H. Ramos, City-Wide Mobile Air Quality Measurement System, IEEE Sensors, Christchurch, New Zealand, Vol. -, pp. - - -, October, 2009,
| Abstract | Full text (PDF 726 KBs) | BibTex
O. Postolache, H. Ramos, A. L. Ribeiro, F. Alegria, GMR Based Eddy Current Sensing Probe for Weld Zone Testing, IEEE Sensors, Chrischurch, New Zealand, Vol. 1, pp. 73 - 78, October, 2009,
| Abstract | BibTex
F. Alegria, Comparison of the Precision of Gain and Offset Estimations Obtained with the Histogram Test of ADCs, IMEKO World Congress, Lisbon, Portugal, Vol. -, pp. - - -, September, 2009 | Full text (PDF 67 KBs) | BibTex
F. Alegria, Bias In ADC Terminal Based Gain and Offset Estimation Using the Histogram Method, IMEKO, Lisbon, Portugal, Vol. -, pp. - - -, September, 2009 | Full text (PDF 67 KBs) | BibTex
F. Alegria, Error in the IEEE 1057 Standard Random Noise Test of ADCs, IMEKO, Lisbon, Portugal, Vol. -, pp. - - -, September, 2009 | Full text (PDF 132 KBs) | BibTex
F. Alegria, Using Sinusoidal Instead of Triangular Stimulus Signals on the IEEE 1057 Standard Random Noise Test of ADCs, IMEKO, Lisbon, Portugal, Vol. -, pp. - - -, September, 2009 | Full text (PDF 61 KBs) | BibTex
H. Ramos, A. L. Ribeiro, F. Alegria, O. Postolache, M. Simões, J. Pimentel, P. Maurício, J. Calvário, A. Carvalho, T. Rocha, Using a Mouse Pointer as a Positioning Device in Eddy Current Testing, IMEKO World Congress, Lisbon, Portugal, Vol. 1, pp. 518 - 521, September, 2009,
| Abstract | BibTex
H. Ramos, O. Postolache, F. Alegria, A. L. Ribeiro, Using the Skin Effect to Estimate Cracks Depths in Mettalic Structures, IEEE Instrumentation and Measurement Technology Conf., Singapore, Singapore, Vol. CD, pp. 1361 - 1366, May, 2009,
| Abstract | BibTex
H. Ramos, A. L. Ribeiro, O. Postolache, F. Alegria, Virtual Instrument to Detect Defects in Conductive Materials, Conf. on Telecommunications - ConfTele, Sta Maria da Feira, Portugal, Vol. 1, pp. 137 - 140, May, 2009,
| Abstract | BibTex
A. L. Ribeiro, F. Alegria, O. Postolache, H. Ramos, Eddy Current Inspection of a Duralumin Plate, IEEE Instrumentation and Measurement Technology Conf., Singapore, Singapore, Vol. CD, pp. 1367 - 1371, May, 2009,
| Abstract | Full text (PDF 1 MB) | BibTex
Travassos, F. Alegria, Automatic Monitoring of a Vodafone Radiocommunication Base Station, IAENG International Conf. of Electrical and Electronics Engineering - ICEEE, London, United Kingdom, Vol. -, pp. - - -, July, 2008,
| Abstract | Full text (PDF 486 KBs) | BibTex
Lopes, F. Alegria, Redondo, Automation of a Particle Accelerator Operation Using LabVIEW, IAENG International Conf. of Electrical and Electronics Engineering - ICEEE, London, United Kingdom, Vol. -, pp. - - -, July, 2008,
| Abstract | Full text (PDF 468 KBs) | BibTex
F. Alegria, A. Serra, Uncertainry Analysis of the ADC Histogram Test Using Triangular Stimulus Signals, Workshop on ADC Modelling and Testing, Iasi, Romania, Vol. -, pp. - - -, September, 2007 | BibTex
F. Alegria, Proposal for High Accuracy Linearity Test of Triangular Waveform Generators, IEEE AFRICON Conf. in Africa, Wondhoek, Namibia, Vol. -, pp. - - -, September, 2007 | BibTex
S. Shariat-Panahi, F. Alegria, A. Manuel, A. Serra, Time Base Error Characterization of a Data Recorder Aimed for Marine Seismology, IEEE Instrumentation and Measurement Technology Conf., Warsow, Poland, Vol. -, pp. - - -, May, 2007 | BibTex
L. Sousa, F. Alegria, J. Germano, Developing and integrating lab projects as important learning components in an embedded systems course, International Conf. on Microelectronic Systems Education, San Diego, United States, Vol. -, pp. - - -, April, 2007 | BibTex
P.M. Girão, F. Alegria, Wireless System for Traffic Control and Law Enforcement, IEEE International Conf. on Industrial Technology, Mumbai, India, Vol. 1, pp. 1768 - 1770, December, 2006 | BibTex
F. Alegria, P.M. Girão, Vehicle Plate Recognition for Wireless Traffic Control and Law Enforcement System, International Conference on Industrial Technology ICIT 2006, Mumbai, India, Vol. 1, pp. 1800 - 1804, December, 2006 | BibTex
F. Alegria, A. Serra, Uncertainty of the estimates obtained with the histogram test of ADCs, IMEKO World Congress, Rio de Janeiro, Brazil, Vol. -, pp. - - -, September, 2006 | BibTex
F. Alegria, S. Shariat-Panahi, A. Manuel, A. Serra, Characterization of a High Resolution Acquisition System For Marine Geophysical Applications, IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. -, pp. 1317 - 1320, April, 2006 | BibTex
F. Alegria, A. Serra, The Histogram Test of ADCs is Unbiased by Phase Noise, IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. -, pp. 1639 - 1642, April, 2006 | BibTex
F. Alegria, A. Serra, Uncertainty of the Estimates of Sine Wave Fitting of Digital Data in the Presence of Additive Noise, IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. -, pp. 1643 - 1647, April, 2006 | BibTex
F. Alegria, A. Serra, Precision of ADC Gain and Offset Error Estimation with the Standard Histogram Test, IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 1, pp. 282 - 286, May, 2005 | BibTex
F. Alegria, A. Serra, Use of Overdrive in the Histogram Test of ADCs, Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 1, pp. 6 - 8, April, 2005 | BibTex
F. Alegria, P. M. Ramos, A. Serra, Measuring Channel Switching Error in Data Acquisition Systems, Euro Workshop on ADC Modelling and Testing, Perugia, Italy, Vol., pp. 175 - 177, September, 2003 | BibTex
F. Alegria, A. Serra, Coherent Sampling of Sinewaves, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol., pp. 131 - 134, June, 2003 | BibTex
F. Alegria, P.M. Girão, V. Haasz, A. Serra, Performance of Data Acquisition Systems from User’s Point of View, IEEE Instrumentation and Measurement Technology Conf., Vail, United States, Vol., pp. 1 - 4, May, 2003 | BibTex
F. Alegria, A. Serra, Uncertainty in the ADC Transition Voltages Determined with the Histogram Method, Euro Workshop on ADC Modelling and Testing, Lisbon, Portugal, Vol., pp. 28 - 32, September, 2001 | BibTex
F. Alegria, A. Serra, Variance of the Cumulative Histogram of ADCs due to Frequency Errors, IEEE Instrumentation and Measurement Technology Conf., Budapest, Hungary, Vol., pp. 2021 - 2026, May, 2001 | BibTex
F. Alegria, A. Serra, ADC Histogram Test by Triangular Small-Waves, IEEE Instrumentation and Measurement Technology Conf., Budapest, Hungary, Vol., pp. 1690 - 1695, May, 2001 | BibTex
F. Alegria, A. Serra, Study of the Variance in the Histogram test of ADCs, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol., pp. 141 - 145, April, 2001 | BibTex
H. Ramos, F. Alegria, Caracterização de Conversores Analógico Digitais com Sinais FM, Brazilian Congress of Metrology, São Paulo, Brazil, Vol. 1, pp. 189 - 197, December, 2000 | BibTex
F. Alegria, A. Serra, ADC Histogram Test Using Small-Amplitude Input Waves, Prague, Austria, Vol. X, pp. 9 - 14, September, 2000 | BibTex
F. Alegria, A. Serra, Influence of Frequency Errors in the Variance of the Cumulative Histogram, Conf. on Precision Electromagnetic Measurements, Sydney, Australia, Vol., pp. 585 - 586, May, 2000 | BibTex
F. Alegria, H. Ramos, Characterization of ADCs Using a FM Signal, Conf. on Precision Electromagnetic Measurements, Sydney, Australia, Vol., pp. 583 - 584, May, 2000 | BibTex
F. Alegria, A. Serra, Automatic Calibration System for Analog Measurement Instruments, Tampere, Finland, Vol. IVA-4, pp. 292 - 297, June, 1997 | BibTex
F. Alegria, H. Ramos, A Remote Controlled Automated Measurement System, IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 2, pp. 1186 - 1189, May, 1997 | BibTex
F. Alegria, A. Serra, Multifunction I/O Boards for the IBM PC AT, Budapest, Hungary, Vol., pp. 302 - 305, September, 1996 | BibTex

Patents

2Patents

P.M. Girão, F. Alegria, Sistema de identificação automática de matrículas de veículos a partir de imagens vídeo, PT103680, National, Granted, 09-03-2007, Portugal
P.M. Girão, F. Alegria, J. C. C. V. Vieira, B. L. Lu, Sistema automático de detecção e identificação da intrusão de veículos em faixas ou sentidos de circulação interditados ao trânsito, PT103501, National, Granted, 14-06-2006, Portugal

Projects

Currently running projects2

Acronym	Name	Funding Agency	Start date	Ending date
ComSense	Inovação em Sensores e Comunicações para a Sociedade	Portugal 2030	01-10-2024	01-09-2027
Roller-Predict	Roller-Predict – New Paradigm for Tube Bending	FEDER, COMPETE, POR Lisboa	01-10-2024	30-09-2027

Closed Projects11

Acronym	Name	Funding Agency	Start date	Ending date
ADCPN	Influence of Phase Noise and Jitter in the testing of telecommunication ADCs.	IT/LA	01-07-2005	31-12-2007
CLASSE	Detection, Classification and Estimation of Defects in Metallic Plates Subject to Manual Inspection	IT/LA	01-12-2008	01-12-2010
CRACK	Flaw Imaging in Metals by Contactless Conductivity	FCT/PTDC	01-10-2007	01-04-2011
EUPAS	EUropean Project for ADC-based devices Standardization	IT/LA	01-01-1998	01-01-2008
HYPOVEG	Experimental Characterization of Instream-Hyporheic Fluxes in Vegetated Channels and Wetlands		01-03-2012	01-03-2015
InADC	InADC-In depth analysis of analog to digital converter methods	FCT/PTDC	01-09-2007	01-09-2010
LUSO	Acção Luso Espanhola - Sismógrafos do Fundo Marinho. Optimização das Técnicas de Desenho dos Instrumentos de Medida: Aquisição, Registo e Tratamento de Dados	CRUP
NECTDiMe	New error correction techniques for digital measurement instruments	FCT/POCTI	01-02-2004	01-02-2007
NMMADC	New measurements methods in Analog to Digital Converters testing	FCT/POCTI	01-10-2000	30-09-2003
TIM	Magnetic Induction Tomography - Development of the instrumentation and measuring methods for biomedical applications.	FCT/POSC	01-06-2005	01-06-2008
UDPT	Uncertainty in the Discrete Fourier Transform	FCT	01-07-2023	31-12-2023

Other Contributions

1Editorial Committees

Layout Editor, Acta IMEKO, 01-01-2012 - today

4Refereeing Journals

Applied Sciences
2024, 1 review(s);
Machines
2024, 1 review(s);
IEEE Transactions on Instrumentation and Measurement
2007, 1 review(s);
Measurement
2007, 1 review(s);

1Refereeing Conferences

IEEE AFRICON Conf. in Africa
2007, 1 review(s);

Related UN SDG

Activities from this researcher fall under the following United Nations Strategic Development Goals (SDGs):

IT Member Profile