Papers in Conference Proceedings  [122] 

- G. A. K. Kyriazis; Ramos, P.M.; Serra, A.C.; "Comparison between a classical and a bayesian approach for estimating harmonics of periodic arbitrary signals", Proc IMEKO TC4 Symp., Natal, Brazil, Vol. TC04, pp. NA - NA, September, 2011.
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- Brás, N.B.; Martins, RCM; Serra, A.C.; "Improvements in the Measurement System of a Biological Magnetic Induction Tomography Experimental Setup", Proc IMEKO 13th IMEKO TC1-TC7 joint Symp., London, United Kingdom, Vol. 238, pp. 455 - 462, September, 2010.
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- Sekerák; L. Michaeli; J. Saliga; Serra, A.C.; "Methods with a new approach for measure static characterization of High Resolution DAC converters", Proc IMEKO TC4 Symp., Kosice, Slovakia, Vol. -, pp. - - -, September, 2010.
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- Brás, N.B.; Martins, RCM; Serra, A.C.; "A Survey on the Implementation of a Magnetic Induction Tomography Prototype: Theoretical Description and Experimental Issues", Proc Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. 1, pp. 121 - 124, May, 2010.
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- Alegria, F.; Serra, A.C.; "Comparison Between Two Digital Methods for Active Power Measurement", Proc IEEE International Conf. on Industrial Technology, Viña del Mar, Chile, Vol. -, pp. - - -, March, 2010.
Abstract | Full text (PDF 317KB) | BibTex

- T. Radil; Ramos, P.M.; Serra, A.C.; "Single-phase power quality analyzer based on a new detection and classification algorithm", Proc IMEKO World Congress, Lisbon, Portugal, Vol. CD-ROM, pp. 917 - 922, September, 2009.
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- Serra, A.C.; "Analog to Digital Converters Testing", Proc INMETRO 8th International Seminar on Electrical Metrology - VIIISemetro, Joao Pessoa, Brazil, Vol. 1, pp. na - na, June, 2009.
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- Ramos, P.M.; T. Radil; Janeiro, F. M.; Serra, A.C.; "Development and Implementation of Algorithms for Power Quality Measurements", Proc Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. 1, pp. 117 - 120, May, 2009.
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- T. Radil; Ramos, P.M.; Serra, A.C.; "Improved Method for Detection and Classification of Transients and Waveform Distortions Using Sine Fitting Algorithms", Proc International Conf. on Renewable Energies and Power Quality - ICREPQ, Valencia, Spain, Vol. CD-ROM, pp. 485.1 - 485.5, April, 2009.
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- Brás, N.B.; Martins, RCM; Serra, A.C.; "Characterization of a New Symmetrical Cancelation Method for Magnetic Induction Tomography", Proc IMEKO TC4 Symp., Florence, Italy, Vol. 1, pp. 922 - 927, September, 2008.
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- Ramos, P.M.; T. Radil; Serra, A.C.; "Detection and classification of transients and waveform distortions using an algorithm based on sine-fitting", Proc IMEKO TC4 Symp., Florence, Italy, Vol. 1, pp. 323 - 328, September, 2008.
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- T. Radil; Ramos, P.M.; Serra, A.C.; "Detection and Extraction of Harmonic and Non-harmonic Power Quality Disturbances Using Sine Fitting Methods", Proc International Conf. on Harmonics and Quality of Power - ICHQP, Wollongong, Australia, Vol. CD-ROM, pp. 1 - 6, September, 2008.
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- Serra, A.C.; L. V. B. Biesen; "IMEKO - THE INSTRUMENTATION AND MEASUREMENT CONFEDERATION", Proc IMEKO 12th IMEKO TC1 , Annecy, France, Vol. -, pp. - - -, September, 2008.
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- Brás, N.B.; Martins, RCM; Serra, A.C.; "Dimensioning and Characterization of a New Magnetic Induction Tomography", Proc IEEE International Instrumentation and Technology Conf. - I2MTC, Victoria, Canada, Vol. 1, pp. 2131 - 2136, May, 2008.
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- T. Radil; Ramos, P.M.; Serra, A.C.; "Frequency Estimation of Power System Signals Using a New Spectrum Leakage Correction Algorithm", Proc IEEE International Instrumentation and Technology Conf. - I2MTC, Victoria, Canada, Vol. CD-ROM, pp. 2161 - 2166, May, 2008.
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- Ramos, P.M.; Janeiro, F. M.; M. Tlemçani ; Serra, A.C.; "Uncertainty analysis of impedance measurements using DSP implemented ellipse fitting algorithms", Proc IEEE International Instrumentation and Technology Conf. - I2MTC, Victoria, Canada, Vol. 1, pp. 463 - 467, May, 2008.
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- Ramos, P.M.; T. Radil; Janeiro, F. M.; Serra, A.C.; "DSP based power quality analyzer using new signal processing algorithms for detection and classification of disturbances in a single-phase power system", Proc IMEKO TC4 Symp., Iasi, Romania, Vol. II, pp. 433 - 438, September, 2007.
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- Ramos, P.M.; Janeiro, F. M.; M. Tlemçani ; Serra, A.C.; "Implementation of a DSP based impedance measurement instrument using ellipse fitting algorithms", Proc IMEKO TC4 Symp., Iasi, Romania, Vol. II, pp. 492 - 497, September, 2007.
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- Alegria, F.; Serra, A.C.; "Uncertainry Analysis of the ADC Histogram Test Using Triangular Stimulus Signals", Proc Workshop on ADC Modelling and Testing, Iasi, Romania, Vol. -, pp. - - -, September, 2007.
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- Brás, N.B.; Martins, RCM; Serra, A.C.; "A Closed Loop Carrier Cancellation Method For The Receiving Circuit Of Magnetic Induction Tomography (MIT)", Proc International Conf. on Electromagnetic Near-Field Characterization and Imaging - ICONIC, St. Louis, United States, Vol. 1, pp. 752 - 757, June, 2007.
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- Brás, N.B.; Ribeiro, A. L.; Martins, RCM; Serra, A.C.; "A 3D Magnetic Induction Tomography Numerical Forward Problem Solver Based on Finite Differences", Proc Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 247 - 250, May, 2007.
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- V. Matz; T. Radil; Ramos, P.M.; Serra, A.C.; "Automated Power Quality Monitoring System for On-line Detection and Classification of Disturbances", Proc IEEE Instrumentation and Measurement Technology Conf., Warsaw, Poland, Vol. CD-ROM, pp. 7083.1 - 7083.6, May, 2007.
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- T. Radil; V. Matz; Ramos, P.M.; Janeiro, F. M.; Serra, A.C.; "Development of a real-time Power quality monitoring Instrument for Detection and Classification of Disturbances in a Single-phase Power System", Proc Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 267 - 270, May, 2007.
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- Serra, A.C.; "Substrate Noise Analysis for Integrated Circuits Design", Proc IEEE Instrumentation and Measurement Technology Conf., Warsaw, Poland, Vol. , pp. 1 - 5, May, 2007.
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- S. Shariat-Panahi; Alegria, F.; A. Manuel; Serra, A.C.; "Time Base Error Characterization of a Data Recorder Aimed for Marine Seismology", Proc IEEE Instrumentation and Measurement Technology Conf., Warsow, Poland, Vol. -, pp. - - -, May, 2007.
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- R. Queirós; V. Matz; Girão, P.M.; Serra, A.C.; "Ultrasonic Thickness Estimation using Cross-Correlation and Phase-Shift", Proc Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. , pp. - - -, May, 2007.
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- T. Radil; V. Matz; Janeiro, F. M.; Ramos, P.M.; Serra, A.C.; "On-line Detection and Classification of Power Quality Disturbances in a Single-phase Power System", Proc International Conf. on Power Engineering, Energy and Electrical Drives - POWERENG, Setúbal, Portugal, Vol. CD-ROM, pp. 713 - 718, April, 2007.
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- T. Radil; Janeiro, F. M.; Ramos, P.M.; Serra, A.C.; "Power Quality Monitoring in a Single-phase Power System", Proc IEEE International Conf. on Signals, Systems, Devices - SSD, Hammamet, Tunisia, Vol. CD-ROM, pp. 1 - 4, March, 2007.
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- V. Matz; Ramos, P.M.; Brás, N.B.; Serra, A.C.; "A comparative evaluation between frequency estimation algorithms for power quality assessment in DSP implementation", Proc IMEKO World Congress, Rio de Janeiro, Brazil, Vol. , pp. - - -, September, 2006.
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- R. Queirós; Martins, RCM; Girão, P.M.; Serra, A.C.; "A New Method for High Resolution Ultrasonic Ranging in Air", Proc IMEKO World Congress, Rio de Janeiro, Brazil, Vol. , pp. - , September, 2006.
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- Janeiro, F. M.; Ramos, P.M.; M. Tlemçani ; Serra, A.C.; "Analysis of a Non-Iterative Algorithm for the Amplitude and Phase Difference Estimation of two Acquired Sinewaves", Proc IMEKO World Congress, Rio de Janeiro, Brazil, Vol. , pp. - - -, September, 2006.
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- Alegria, F.; Serra, A.C.; "Uncertainty of the estimates obtained with the histogram test of ADCs", Proc IMEKO World Congress, Rio de Janeiro, Brazil, Vol. -, pp. - - -, September, 2006.
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- Ramos, P.M.; Brás, N.B.; Serra, A.C.; "A new calibration method for current and voltage sensors used in power quality measurements", Proc IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. 1, pp. 2283 - 2288, April, 2006.
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- Alegria, F.; S. Shariat-Panahi; A. Manuel; Serra, A.C.; "Characterization of a High Resolution Acquisition System For Marine Geophysical Applications", Proc IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. -, pp. 1317 - 1320, April, 2006.
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- Ramos, P.M.; Serra, A.C.; "Convergence of Least-Squares Multi Harmonic Fitting Algorithm", Proc IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. 1, pp. 1982 - 1987, April, 2006.
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- R. Queirós; Girão, P.M.; Serra, A.C.; "Cross-Correlation and Sine-Fitting Techniques for High Resolution Ultrasonic Ranging", Proc IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. , pp. 552 - 556, April, 2006.
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- Alegria, F.; Serra, A.C.; "The Histogram Test of ADCs is Unbiased by Phase Noise", Proc IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. -, pp. 1639 - 1642, April, 2006.
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- Alegria, F.; Serra, A.C.; "Uncertainty of the Estimates of Sine Wave Fitting of Digital Data in the Presence of Additive Noise", Proc IEEE Instrumentation and Measurement Technology Conf., Sorrento, Italy, Vol. -, pp. 1643 - 1647, April, 2006.
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- HJQ Quaresma; Santos, P.M.; Serra, A.C.; E. Sicard; "A METHODOLOGY FOR EXTRACTING UNKNOWN INTEGRATED CIRCUIT PROCESS PARAMETERS", Proc IEEE International Conf. on Electronics, Circuits and Systems, Gammarth, Tunisia, Vol. 1, pp. 84 - 88, December, 2005.
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- Brás, N.B.; Ramos, P.M.; Serra, A.C.; "Flexible PC measurement system based in Extensible Mark-up Language files", Proc IMEKO TC4 Symp., Gdynia, Poland, Vol. 2, pp. 404 - 407, September, 2005.
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- R. Queirós; Girão, P.M.; Serra, A.C.; "Single-Mode Piezoelectric Ultrasonic Transducer Equivalent Circuit Parameter Calculations and Optimization Using Experimental Data", Proc IMEKO TC4 Symp., Gdynia, Jurata, Poland, Vol. II, pp. 468 - 471, September, 2005.
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- T. Radil; Ramos, P.M.; Serra, A.C.; "DSP based portable impedance measurement instrument using sine-fitting algorithms", Proc IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 2, pp. 1018 - 1022, May, 2005.
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- Alegria, F.; Serra, A.C.; "Precision of ADC Gain and Offset Error Estimation with the Standard Histogram Test", Proc IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 1, pp. 282 - 286, May, 2005.
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- Ramos, P.M.; M. F. Silva; Serra, A.C.; "Applying sine-fitting algorithms beyond the Nyquist limit", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. -, pp. - - -, April, 2005.
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- Ramos, P.M.; T. Radil; Serra, A.C.; "Implementation of sine-fitting algorithms in a DSP based portable instrument for impedance measurement", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. -, pp. - - -, April, 2005.
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- Alegria, F.; Serra, A.C.; "Use of Overdrive in the Histogram Test of ADCs", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 1, pp. 6 - 8, April, 2005.
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- Ramos, P.M.; Serra, A.C.; "Tailored Multi-Harmonic Signals for Impedance Measurements with Waveform Fitting Algorithms", Proc IEEE International Conf. on Signals, Systems, Devices - SSD, Sousse, Tunisia, Vol. 4, pp. 1 - 5, March, 2005.
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- Martins, RCM; Serra, A.C.; "Automated Methodology for Modeling and Measuring Memoryless Nonlinearities from the Stochastic Properties of a Signal", Proc IEEE AFRICON Conf. in Africa, Gabarone, Botswana, Vol. 1, pp. 1 - 6, September, 2004.
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- Martins, RCM; Serra, A.C.; "Measurement and Representation of the ADC Integral Nonlinearity in the Time Domain", Proc Workshop on ADC Modelling and Testing, Athens, Greece, Vol. 2, pp. 847 - 853, September, 2004.
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- Ramos, P.M.; M. F. Silva; Serra, A.C.; "Impedance Measurement using a Least-Squares Waveform Fitting Algorithm", Proc Conf. on Precision Electromagnetic Measurements, London, United Kingdom, Vol. 1, pp. 125 - 126, June, 2004.
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- M. F. Silva; Ramos, P.M.; Martins, RCM; Serra, A.C.; "Least-Square Fitting Algorithms Applied To Periodic Signals", Proc IEEE Instrumentation and Measurement Technology Conf., Como, Italy, Vol. 3, pp. 1730 - 1734, May, 2004.
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- Monteiro, M.C.; P Arpaia; Serra, A.C.; "A Frequency Domain Approach to ADC Phase-Plane Modelling and Testing", Proc Workshop on ADC Modelling and Testing, Perugia, Italy, Vol. 1, pp. 587 - 590, September, 2003.
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- Alegria, F.; Ramos, P.M.; Serra, A.C.; "Measuring Channel Switching Error in Data Acquisition Systems", Proc Euro Workshop on ADC Modelling and Testing, Perugia, Italy, Vol. , pp. 175 - 177, September, 2003.
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- Martins, RCM; Serra, A.C.; "Stochastic Approach for Memoryless Nonlinearity Measurement", Proc Workshop on ADC Modelling and Testing, Perugia, Italy, Vol. 1, pp. 209 - 212, September, 2003.
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- Alegria, F.; Serra, A.C.; "Coherent Sampling of Sinewaves", Proc Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. , pp. 131 - 134, June, 2003.
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- HJQ Quaresma; Silva, A.; Serra, A.C.; "Improving dynamic resistance and differential capacitance measurement of active devices", Proc IMEKO World Congress, Dubrovnik, Croatia, Vol. 1, pp. 959 - 962, June, 2003.
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- Ramos, P.M.; M. F. Silva; Serra, A.C.; "Improving sine-fitting algorithms for amplitude and phase measurements", Proc IMEKO World Congress, Dubrovnik, Croatia, Vol. TC4, pp. 614 - 619, June, 2003.
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- Monteiro, M.C.; P Arpaia; Serra, A.C.; "Phase-spectrum Based Compensation of ADC Dynamic Hysteresis ", Proc Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 587 - 290, June, 2003.
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- Martins, RCM; Serra, A.C.; "Stochastic Approach for Nonlinearity Measurement Using Power Series Representation", Proc Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 143 - 146, June, 2003.
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- Monteiro, M.C.; P Arpaia; Serra, A.C.; "Dual Tone Analysis for Phase-Plane Coverage in ADC Metrological Characterization", Proc IEEE Instrumentation and Measurement Technology Conf., Vail, United States, Vol. 2, pp. 1334 - 1339, May, 2003.
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- HJQ Quaresma; Silva, A.; Serra, A.C.; "Error correction technique for dynamic impedance measurement", Proc IEEE Instrumentation and Measurement Technology Conf., Vail, United States, Vol. 2, pp. 1009 - 1012, May, 2003.
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- Alegria, F.; Girão, P.M.; V. Haasz; Serra, A.C.; "Performance of Data Acquisition Systems from User’s Point of View", Proc IEEE Instrumentation and Measurement Technology Conf., Vail, United States, Vol. , pp. 1 - 4, May, 2003.
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- HJQ Quaresma; Silva, A.; Serra, A.C.; "Técnica de correcção de erros para medida de resistência dinâmica", Proc Congresso de Mecânica Computacional, Évora, Portugal, Vol. 3, pp. 1679 - 1686, April, 2003.
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- M. F. Silva; Ramos, P.M.; Serra, A.C.; "Impedance measurement using sine fitting algorithms", Proc IMEKO TC4 Symp., Zagreb, Croatia, Vol. 1, pp. 199 - 204, September, 2002.
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- M. F. Silva; Serra, A.C.; "A new robust four parameter sine fitting procedure", Proc IMEKO TC4 Symp., Prague, Czech Republic, Vol. 1, pp. 111 - 114, June, 2002.
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- Serra, A.C.; "New trends in analog to digital converters testing", Proc Euro Workshop on ADC Modelling and Testing, Prague, Czech Republic, Vol. 1, pp. 7 - 13, June, 2002.
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- Martins, RCM; Serra, A.C.; "Representation and Measurement of Nonlinearities in Stimulus Signals", Proc IEEE Instrumentation and Measurement Technology Conf., Anchorage, United States, Vol. 1, pp. 437 - 442, May, 2002.
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- Dias Pereira, J. M.; Postolache, O.; Girão, P.M.; Serra, A.C.; "A Smart Capacitive Transducer with Autocalibration Capabilities", Proc Conf. on Electronic Measurement & Instruments - ICEMI, Guilin, China, Vol. Vol.1, pp. 25 - 29, November, 2001.
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- Dias Pereira, J. M.; Postolache, O.; Serra, A.C.; Girão, P.M.; "Extending Digital Input/Output Capabilities to Low-Cost and Non-Linear A/D Conversion", Proc IMEKO TC4 Symp., Lisbon, Portugal, Vol. Vol.1, pp. 101 - 105, September, 2001.
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- M. F. Silva; Serra, A.C.; "Improving convergence of sine fitting algorithms", Proc Euro Workshop on ADC Modelling and Testing, Lisboa, Portugal, Vol. 1, pp. 121 - 124, September, 2001.
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- Martins, RCM; Serra, A.C.; "Nonlinearities, the Generators Perspective in {ADC} Statistical Testing Techniques", Proc Euro Workshop on ADC Modelling and Testing, Lisbon, Portugal, Vol. 1, pp. 61 - 65, September, 2001.
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- Serra, A.C.; "Speeding up the static test of Analog to Digital Converters ", Proc Seminário Anual de Automática, Electrónica Industrial e Instrumentacion, Matanzas, Cuba, Vol. 1, pp. SP4-IV - SP4-IV, September, 2001.
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- Alegria, F.; Serra, A.C.; "Uncertainty in the ADC Transition Voltages Determined with the Histogram Method", Proc Euro Workshop on ADC Modelling and Testing, Lisbon, Portugal, Vol. , pp. 28 - 32, September, 2001.
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- Alegria, F.; Serra, A.C.; "ADC Histogram Test by Triangular Small-Waves", Proc IEEE Instrumentation and Measurement Technology Conf., Budapest, Hungary, Vol. , pp. 1690 - 1695, May, 2001.
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- Monteiro, M.C.; P Arpaia; Serra, A.C.; "Phase-Spectrum Analysis for Detection of ADC Hysteretic Distortion", Proc IEEE Instrumentation and Measurement Technology Conf., Budapest, Hungary, Vol. 2, pp. 1677 - 1683, May, 2001.
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- Alegria, F.; Serra, A.C.; "Variance of the Cumulative Histogram of ADCs due to Frequency Errors", Proc IEEE Instrumentation and Measurement Technology Conf., Budapest, Hungary, Vol. , pp. 2021 - 2026, May, 2001.
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- Dias Pereira, J. M.; Postolache, O.; Girão, P.M.; Serra, A.C.; "A Discrete and Cost Effective ADC Solution Based on a Pulse-Width Modulation Technique", Proc Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. Vol.1, pp. 153 - 156, April, 2001.
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- Alegria, F.; Serra, A.C.; "Study of the Variance in the Histogram test of ADCs", Proc Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. , pp. 141 - 145, April, 2001.
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- Serra, A.C.; "Caracterização de Conversores Analógico-Digitais - uma tarefa fundamental na moderna Metrologia ", Proc Congresso Brasileiro de Metrologia, São Paulo, Brazil, Vol. 2, pp. 198 - 207, December, 2000.
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- M. F. Silva; Serra, A.C.; "Errors in Parameter Estimation of Quantized Sinusoids", Proc IMEKO World Congress, Vienna, Austria, Vol. IX, pp. 83 - 88, September, 2000.
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- Dias Pereira, J. M.; Serra, A.C.; Girão, P.M.; "Flexible ADC: A Dither and Oversampling Based Solution to Improve the Performance of ADC Systems", Proc IMEKO World Congress, Wien, Austria, Vol. Vol.II, pp. 103 - 108, September, 2000.
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- P Arpaia; Daponte, P.; Serra, A.C.; Monteiro, M.C.; "ADC Testing Based on IEEE 1057-94 Standard - Some Critical Notes", Proc IEEE Instrumentation and Measurement Technology Conf., Baltimore, United States, Vol. 1, pp. 119 - 124, May, 2000.
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- Alegria, F.; Serra, A.C.; "Influence of Frequency Errors in the Variance of the Cumulative Histogram", Proc Conf. on Precision Electromagnetic Measurements, Sydney, Australia, Vol. , pp. 585 - 586, May, 2000.
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- Serra, A.C.; "New measurement procedure for the static test of ADCs", Proc IEEE Instrumentation and Measurement Technology Conf., Baltimore, United States, Vol. 2, pp. 866 - 871, May, 2000.
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- Martins, RCM; Serra, A.C.; "ADC Characterisation by using the Histogram Test stimulated by Gaussian Noise. Theory and experimental results.", Proc Workshop on ADC Modelling and Testing, Bordeaux, France, Vol. 1, pp. 201 - 206, September, 1999.
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- Serra, A.C.; "Uncertainties in the estimation of the code transition levels in the static test of ADCs", Proc Workshop on ADC Modelling and Testing, Bordeaux, France, Vol. 1, pp. 221 - 226, September, 1999.
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- Dias Pereira, J. M.; Serra, A.C.; Girão, P.M.; "Dithering in Interleaved ADC Systems", Proc IMEKO World Congress, Osaka, Japan, Vol. Vol.4, pp. 81 - 84, June, 1999.
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- Dias Pereira, J. M.; Serra, A.C.; Girão, P.M.; "Dithered ADC Systems in the Presence of Hysteresis Errors", Proc IEEE Instrumentation and Measurement Technology Conf., Veneza, Italy, Vol. Vol.2, pp. 1648 - 1652, May, 1999.
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- M. F. Silva; Serra, A.C.; "Automatic Capacitance Measurement System", Proc Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 481 - 484, April, 1999.
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- Dias Pereira, J. M.; Serra, A.C.; Girão, P.M.; "Dithering in A/D converters: A Compromise between Resolution and Bandwidth", Proc Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. Vol.1, pp. 85 - 89, April, 1999.
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- Martins, RCM; Serra, A.C.; "Dynamic Characterisation of Analog to Digital Converters", Proc Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 90 - 94, April, 1999.
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- Monteiro, M.C.; Serra, A.C.; "Real-Time Transcription of Sung Melodies", Proc Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 2, pp. 670 - 674, April, 1999.
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- Martins, RCM; Serra, A.C.; "ADC interbit modulation: description, detection and quantification", Proc IMEKO TC4 Symp., Naples, Italy, Vol. 1, pp. 466 - 471, September, 1998.
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- Martins, RCM; Ramos, H. G.; Girão, P.M.; Serra, A.C.; "Taxonomic problems on ADC characterisation", Proc IEEE Conf. on Electronics, Circuits and System, Lisbon, Portugal, Vol. 3, pp. 445 - 448, September, 1998.
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- Martins, RCM; Serra, A.C.; "The use of a noise stimulus in ADC characterisation", Proc IEEE International Conf. on Electronics, Circuits and Systems, Lisbon, Portugal, Vol. 3, pp. 457 - 460, September, 1998.
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- Martins, RCM; Serra, A.C.; "ADC characterization using the histogram test stimulated by Gaussian noise", Proc Conf. on Precision Electromagnetic Measurements, Washington, United States, Vol. 1, pp. 313 - 314, July, 1998.
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- Postolache, O.; Dias Pereira, J. M.; Girão, P.M.; Serra, A.C.; "A New Virtual Instrument for Temperature Measurement based on a Photodiode Excited by a Laser Source", Proc IEEE Mediterranean Electr. Conf. - MELECON , Tel Aviv, Israel, Vol. I, pp. 1440 - 1444, May, 1998.
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- Dias Pereira, J. M.; Serra, A.C.; Girão, P.M.; "High Accuracy Data Acquisition of Periodic Signals", Proc IMEKO TC4 Symp., Glasgow, United Kingdom, Vol. Vol.1, pp. 141 - 144, September, 1997.
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- Dias Pereira, J. M.; Serra, A.C.; Girão, P.M.; "Minimising Truncation Errors in Digital Wattmeters", Proc IMEKO TC4 Symp., Glasgow, United Kingdom, Vol. Vol.1, pp. 113 - 116, September, 1997.
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- M. F. Silva; Serra, A.C.; "Teaching RC Wien Bridge Oscillator in the laboratory", Proc IMEKO World Congress, Tampere, Finland, Vol. II, pp. 35 - 40, June, 1997.
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- Ramos, H. G.; Serra, A.C.; "Using a VXI Based System to Characterisa Analog to Digital Converters", Proc IMEKO World Congress, Tampere, Finland, Vol. IVB, pp. 245 - 259, June, 1997.
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- Ramos, H. G.; Serra, A.C.; "A Measurement System to Automate Laboratory Testing in Soils", Proc IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 2, pp. 1048 - 1051, May, 1997.
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- Monteiro, M.C.; Serra, A.C.; "Real-Time Sound Analyzer", Proc IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 1, pp. 414 - 417, May, 1997.
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- M. F. Silva; Serra, A.C.; "Study of the Sensitivity in an Automatic Capacitance Measurement System", Proc IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 1, pp. 329 - 334, May, 1997.
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- Girão, P.M.; Serra, A.C.; "VXI Instrumentation: Message Based or Register Based Devices?", Proc IEEE Instrumentation and Measurement Technology Conf., Ottawa, Canada, Vol. 1, pp. 237 - 240, May, 1997.
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- M. F. Silva; Serra, A.C.; "Capacitance Measurement Method", Proc IEEE AFRICON Conf. in Africa, Stellenbosch, South Africa, Vol. 1, pp. 247 - 250, September, 1996.
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- Ramos, H. G.; Girão, P.M.; Serra, A.C.; "Impact of Virtual Instrumentation in Teaching Automated Measurement Systems", Proc IEEE AFRICON Conf. in Africa, Stellenbosch, South Africa, Vol. II, pp. 978 - 981, September, 1996.
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- Fernandes, C. F.; Serra, A.C.; Ribeiro, A. L.; Pereira, J. T.; "Large signal transient response of long wavelength injection lasers", Proc IEEE Mediterranean Electr. Conf. - MELECON , Bari, Italy, Vol. II, pp. 680 - 683, May, 1996.
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- M. F. Silva; Serra, A.C.; "Automatic Balancing of Linear AC Bridges", Proc IMEKO TC4 Symp., Prague, Czech Republic, Vol. 1, pp. 372 - 376, September, 1995.
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- Fernandes, C. F.; Pereira, J. T.; Ribeiro, A. L.; Serra, A.C.; "On the influence of the quantum well structure on the definition of the threshold condition in MQW lasers", Proc Jornadas Luso Espanholas de Engenharia Electrotécnica, Lisboa, Portugal, Vol. 1, pp. 456 - 459, July, 1995.
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- Serra, A.C.; "Measurement of capacitance-voltage characteristics of GaAs/AlGaAs isotype n heterojunctions", Proc IMEKO World Congress, Turim, Italy, Vol. 1, pp. 496 - 499, September, 1994.
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- Serra, A.C.; Girão, P.M.; "Static and dynamic testing of A/D converters using a VXI based system", Proc IEEE Instrumentation and Measurement Technology Conf., Hamamatsu, Japan, Vol. 2, pp. 903 - 906, May, 1994.
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- Serra, A.C.; Pereira, J. T.; Fernandes, C. F.; Ribeiro, A. L.; "Carrier and radiation confinement in a DFB multiple quantum well Laser", Proc IEEE Mediterranean Electr. Conf. - MELECON , Antalya, Turkey, Vol. 2, pp. 564 - 567, April, 1994.
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- Serra, A.C.; H. Abreu Santos; "Transmission tunneling current across heterojunction barriers", Proc IEEE Mediterranean Electr. Conf. - MELECON , Antalya, Turkey, Vol. 2, pp. 581 - 584, April, 1994.
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- Fernandes, C. F.; Serra, A.C.; Ribeiro, A. L.; Pereira, J. T.; "A simple Model for a graded-index separate confinement heterostructure-single quantum well laser", Proc Jornadas Hispano Lusas de Ingenieria Eléctrica, Barcelona, Spain, Vol. II, pp. 697 - 706, July, 1993.
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- V.M. Antunes; P.M. Nicolau; Serra, A.C.; Girão, P.M.; "Stand Alone PC Based System for the Automation of Pavement Deformation Measurement Using a Benkelman Beam", Proc Jornadas Hispano Lusas de Ingenieria Eléctrica, Barcelona, Spain, Vol. IV, pp. 1565 - 1570, July, 1993.
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- Serra, A.C.; H. Abreu Santos; A. Marty; J. Bailbé; G. Rey; "An automatic measurement system for the characterization of isotype n GaAs/AlGaAs heterojunctions", Proc Jornadas Hispano Lusas de Ingenieria Eléctrica, Barcelona, Spain, Vol. 4, pp. 1578 - 1591, June, 1993.
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- Fernandes, C. F.; H. Santos ; A. Marty; J. Bailbé; Serra, A.C.; "Experimental results on the GaAs/AlGaAs isotype n heterojunction", Proc Jornadas Luso Espanholas de Engenharia Electrotécnica, Coimbra, Portugal, Vol. III, pp. 95 - 101, July, 1991.
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- Serra, A.C.; G. Rey; J. Bailbé; A. Marty; H. Abreu Santos; Fernandes, C. F.; "Experimental results on the GaAs/Al0.5Ga0.5As isotype n heterojunction", Proc Jornadas Hispano Lusas de Ingenieria Eléctrica, Coimbra, Portugal, Vol. 1, pp. 5.102 - 5.108, June, 1991.
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- Serra, A.C.; H. Abreu Santos; "Surface states on the forbiden gap of a semiconductor", Proc Jornadas Hispano Lusas de Ingenieria Eléctrica, Coimbra, Portugal, Vol. 1, pp. 5.94 - 5.101, June, 1991.
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- Serra, A.C.; H. Abreu Santos; "On the density of states of the heterojunction of two amorphous solids", Proc IEEE Mediterranean Electr. Conf. - MELECON , Liubliana, Yugoslavia, Vol. 1, pp. 83 - 86, May, 1991.
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- Fernandes, C. F.; Serra, A.C.; "Hot electron launching using the AlçGaAs/GaAs n-n heterojunction", Proc Simpósio Brasileiro de Microondas e Optoelectrónica, João Pessoa, Brazil, Vol. 1405, pp. 129 - 137, July, 1990.
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