Luís Bica Oliveira

Bruno Joao Nogueira Guerreiro

Filipe Ferreira da Silva

IEEE Access, 2024

A Physically Unclonable Function for Biomedical Devices Authentication.

[BibT_eX]

[DOI]

João Cabacinho

Proceedings of the Technological Innovation for Human-Centric Systems, 2024

Nonlinear Model Predictive Control for Optimal Dose Administration in Radiotherapy.

[BibT_eX]

[DOI]

João C. G. Araújo

Bruno J. Guerreiro

Filipe Ferreira da Silva

Proceedings of the Technological Innovation for Human-Centric Systems, 2024

2023

Impact and compensation of carrier synchronization errors in OFDM signals with very large QAM constellations.

[BibT_eX]

[DOI]

IET Commun., June, 2023

Automatic Rural Road Centerline Detection and Extraction from Aerial Images for a Forest Fire Decision Support System.

[BibT_eX]

[DOI]

Remote. Sens., January, 2023

2022

A Full Current-Mode Timing Circuit with Dark Noise Suppression for the CERN CMS Experiment.

[BibT_eX]

[DOI]

Edgar F. M. Albuquerque

Proceedings of the 48th IEEE European Solid State Circuits Conference, 2022

2021

An Integrated Decision Support System for Improving Wildfire Suppression Management.

[BibT_eX]

[DOI]

ISPRS Int. J. Geo Inf., 2021

Design of Ultra Low Power CMOS Oscillators Using Active Inductors.

[BibT_eX]

[DOI]

Duarte Batista

Proceedings of the 64th IEEE International Midwest Symposium on Circuits and Systems, 2021

A Data Fusion of IoT Sensor Networks for Decision Support in Forest Fire Suppression.

[BibT_eX]

[DOI]

Proceedings of the Internet of Things. Technology and Applications, 2021

2019

Using Modified Bessel Functions for Analysis of Nonlinear Effects in a MOS Transistor Operating in Moderate Inversion.

[BibT_eX]

[DOI]

Pedro Mendonça dos Santos

IEEE Trans. Circuits Syst. I Regul. Pap., 2019

Combined Organic Photovoltaic Cells and Ultra Low Power CMOS Circuit for Indoor Light Energy Harvesting.

[BibT_eX]

[DOI]

Sensors, 2019

Built-in self test of high speed analog-to-digital converters.

[BibT_eX]

[DOI]

Edinei Santin

IEEE Instrum. Meas. Mag., 2019

On Sensitivity of Bias Operation Point In Transistors with Moderate Inversion.

[BibT_eX]

[DOI]

Proceedings of the 62nd IEEE International Midwest Symposium on Circuits and Systems, 2019

Decomposition of Drain Current In Weak, Moderate, and Strong Inversion Components.

[BibT_eX]

[DOI]

Proceedings of the 26th IEEE International Conference on Electronics, Circuits and Systems, 2019

2018

Generic Model for Multi-Phase Ring Oscillators.

[BibT_eX]

[DOI]

Proceedings of the IEEE International Symposium on Circuits and Systems, 2018

Characterization of the residual self-interference power in full-duplex wireless systems.

[BibT_eX]

[DOI]

Luis Irio

Rodolfo Oliveira

Proceedings of the IEEE International Symposium on Circuits and Systems, 2018

Using Modified Bessel Functions For Calculations of Drain Current Harmonics In a MOS Transistor Operating in Moderate Inversion.

[BibT_eX]

[DOI]

Proceedings of the IEEE International Symposium on Circuits and Systems, 2018

2017

Undergraduate Electronics Projects Based on the Design of an Optical Wireless Audio Transmission System.

[BibT_eX]

[DOI]

IEEE Trans. Educ., 2017

Fractional harmonic distortion calculation using simplified "reconciliation" model for a MOST operating in moderate inversion.

[BibT_eX]

[DOI]

Proceedings of the IEEE 60th International Midwest Symposium on Circuits and Systems, 2017

Low frequency CMOS two-integrator oscillator for IoT applications.

[BibT_eX]

[DOI]

Elvio Mendes

João Pedro Oliveira

Proceedings of the 24th International Conference Mixed Design of Integrated Circuits and Systems, 2017

A simple LDO with adaptable bias for internet of things applications.

[BibT_eX]

[DOI]

Proceedings of the IEEE International Symposium on Circuits and Systems, 2017

2016

A quadrature RC-oscillator with capacitive coupling.

[BibT_eX]

[DOI]

Integr., 2016

Noise canceling LNA with gain enhancement by using double feedback.

[BibT_eX]

[DOI]

Integr., 2016

On design of memory retention LDO regulator.

[BibT_eX]

[DOI]

V. V. Ivanov

Proceedings of the 14th IEEE International New Circuits and Systems Conference, 2016

Using "reconciliation" model for calculation of harmonics in a MOS transistor stage operating in moderate inversion.

[BibT_eX]

[DOI]

Proceedings of the IEEE International Symposium on Circuits and Systems, 2016

Wideband noise cancelling balun LNA with feedback biasing.

[BibT_eX]

[DOI]

Miguel D. Fernandes

Proceedings of the IEEE International Symposium on Circuits and Systems, 2016

2015

Wideband CMOS Receiver with Integrated Filtering and a Current-Mode Sigma-Delta Analog-to-Digital Converter.

[BibT_eX]

[DOI]

Miguel D. Fernandes

J. Low Power Electron., 2015

Amplitude and Quadrature Errors of Two-Integrator Oscillator.

[BibT_eX]

[DOI]

Vítor Manuel Mendes da Silva

J. Low Power Electron., 2015

Iterative Frequency-Domain Equalization for General QAM Constellations with Reduced Envelope Fluctuations through Magnitude Modulation Techniques.

[BibT_eX]

[DOI]

Marco Gomes

Rui Dinis

Francisco Cercas

Proceedings of the IEEE 81st Vehicular Technology Conference, 2015

Wideband CMOS RF front-end receiver with integrated filtering.

[BibT_eX]

[DOI]

Proceedings of the 22nd International Conference Mixed Design of Integrated Circuits & Systems, 2015

Analysis of a noise canceling LNA using a Si2 OpenAccess based tool - CADIT.

[BibT_eX]

[DOI]

Proceedings of the 22nd International Conference Mixed Design of Integrated Circuits & Systems, 2015

A low-voltage voltage-controlled ring-oscillator employing dynamic-threshold-MOS and body-biasing techniques.

[BibT_eX]

[DOI]

Proceedings of the 2015 IEEE International Symposium on Circuits and Systems, 2015

2014

Regulated Common-Gate Transimpedance Amplifier Designed to Operate With a Silicon Photo-Multiplier at the Input.

[BibT_eX]

[DOI]

IEEE Trans. Circuits Syst. I Regul. Pap., 2014

Quadrature error of two-integrator oscillators.

[BibT_eX]

[DOI]

Proceedings of the IEEE 57th International Midwest Symposium on Circuits and Systems, 2014

A widely tunable narrowband balun-LNA with integrated filtering.

[BibT_eX]

[DOI]

Miguel Fernandes

João Pedro Oliveira

Proceedings of the 21st International Conference Mixed Design of Integrated Circuits and Systems, 2014

Regulated common-gate transimpedance amplifier for radiation detectors and receivers.

[BibT_eX]

[DOI]

Proceedings of the 21st International Conference Mixed Design of Integrated Circuits and Systems, 2014

A low-voltage LNA and current mode mixer design for energy harvesting sensor node.

[BibT_eX]

[DOI]

Proceedings of the 21st International Conference Mixed Design of Integrated Circuits and Systems, 2014

A low power quadrature class D LC oscillator with 0.4V supply.

[BibT_eX]

[DOI]

Proceedings of the 21st International Conference Mixed Design of Integrated Circuits and Systems, 2014

Analog-to-Digital Converters with embedded IF mixing using variable reference voltages.

[BibT_eX]

[DOI]

Proceedings of the IEEE International Symposium on Circuits and Systemss, 2014

Quadrature relaxation oscillator with FoM of -165 dBc/Hz.

[BibT_eX]

[DOI]

Eduardo Ortigueira

Taimur Gibran Rabuske

Proceedings of the IEEE International Symposium on Circuits and Systemss, 2014

Experimental evaluation of wide range injection locking in a CMOS RC oscillator.

[BibT_eX]

[DOI]

Eduardo Ortigueira

Proceedings of the IEEE International Symposium on Circuits and Systemss, 2014

The design of a light barrier system as an undergraduate laboratory project.

[BibT_eX]

[DOI]

Nuno Paulino

Nuno Pereira

Proceedings of the IEEE International Symposium on Circuits and Systemss, 2014

Piezoelectric Energy Harvester for a CMOS Wireless Sensor.

[BibT_eX]

[DOI]

Proceedings of the Technological Innovation for Collective Awareness Systems, 2014

A 0.5 V Ultra-low Power Quadrature Ring Oscillator.

[BibT_eX]

[DOI]

Proceedings of the Technological Innovation for Collective Awareness Systems, 2014

2013

Cascode amplifiers with low-gain variability using body-biasing temperature and supply compensation.

[BibT_eX]

[DOI]

Proceedings of the 20th International Conference Mixed Design of Integrated Circuits and Systems, 2013

Double feedforward 0.6 V LNA with high gain and low noise figure.

[BibT_eX]

[DOI]

Proceedings of the 20th International Conference Mixed Design of Integrated Circuits and Systems, 2013

Design of Cascode-Based Transconductance Amplifiers with Low-Gain PVT Variability and Gain Enhancement Using a Body-Biasing Technique.

[BibT_eX]

[DOI]

Nuno Pereira

Proceedings of the Technological Innovation for the Internet of Things, 2013

A 1.2 V Low-Noise-Amplifier with Double Feedback for High Gain and Low Noise Figure.

[BibT_eX]

[DOI]

Proceedings of the Technological Innovation for the Internet of Things, 2013

2012

Noise Performance of a Regulated Cascode Transimpedance Amplifier for Radiation Detectors.

[BibT_eX]

[DOI]

Carlos M. Leitao

IEEE Trans. Circuits Syst. I Regul. Pap., 2012

An inductorless CMOS quadrature oscillator continuously tuneable from 3.1 to 10.6 GHz.

[BibT_eX]

[DOI]

Int. J. Circuit Theory Appl., 2012

Low voltage low power fully differential self-biased 1.5-bit quantizer with built-in thresholds.

[BibT_eX]

[DOI]

Michael Figueiredo

Adolfo Steiger-Garção

Int. J. Circuit Theory Appl., 2012

An ultra compact wideband combined LNA-oscillator-mixer for biomedical applications.

[BibT_eX]

[DOI]

Proceedings of the 55th IEEE International Midwest Symposium on Circuits and Systems, 2012

Fast and accurate estimation of gain and sample-time mismatches in time-interleaved ADCs using on-chip oscillators.

[BibT_eX]

[DOI]

Edinei Santin

Proceedings of the 2012 IEEE International Symposium on Circuits and Systems, 2012

Low-power and low-area CMOS quadrature RC oscillator with capacitive coupling.

[BibT_eX]

[DOI]

Proceedings of the 2012 IEEE International Symposium on Circuits and Systems, 2012

Balun LNA with continuously controllable gain and with noise and distortion cancellation.

[BibT_eX]

[DOI]

Proceedings of the 2012 IEEE International Symposium on Circuits and Systems, 2012

Low phase-noise temperature compensated self-biased ring oscillator.

[BibT_eX]

[DOI]

Proceedings of the 2012 IEEE International Symposium on Circuits and Systems, 2012

A High-Level Model for Capacitive Coupled RC Oscillators.

[BibT_eX]

[DOI]

Proceedings of the Technological Innovation for Value Creation, 2012

2011

A Fully Integrated and Reconfigurable Architecture for Coherent Self-Testing of High Speed Analog-to-Digital Converters.

[BibT_eX]

[DOI]

IEEE Trans. Circuits Syst. I Regul. Pap., 2011

A 1 mW low phase-noise relaxation oscillator.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2011), 2011

CMOS Fully Differential Feedforward-Regulated Folded Cascode Amplifier.

[BibT_eX]

[DOI]

Proceedings of the Technological Innovation for Sustainability, 2011

2010

A 5 GHz quadrature relaxation oscillator with mixing for improved testability or compact front-end implementation.

[BibT_eX]

[DOI]

Manuel M. Silva

Int. J. Circuit Theory Appl., 2010

Experimental comparison of phase-noise in cross-coupled RC- and LC-oscillators.

[BibT_eX]

[DOI]

Manuel M. Silva

Int. J. Circuit Theory Appl., 2010

Fully integrated and reconfigurable architecture for coherent self-testing of IQ ADCs.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2010), May 30, 2010

MOSFET-only Mixer/IIR filter with gain using parametric amplification.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2010), May 30, 2010

Fast-settling low-power two-stage self-biased CMOS amplifier using feedforward-regulated cascode devices.

[BibT_eX]

[DOI]

Proceedings of the 17th IEEE International Conference on Electronics, 2010

2009

Combined LNA and Mixer Circuits for 2.4 GHz ISM Band.

[BibT_eX]

[DOI]

Miguel A. Martins

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2009), 2009

Run-Time Reconfigurable Array Using Magnetic RAM.

[BibT_eX]

[DOI]

Proceedings of the 12th Euromicro Conference on Digital System Design, 2009

2008

Switching Time in Relaxation Oscillations of Emitter-Coupled Multivibrators.

[BibT_eX]

[DOI]

IEEE Trans. Circuits Syst. II Express Briefs, 2008

A Pulse Generator for UWB-IR Based on a Relaxation Oscillator.

[BibT_eX]

[DOI]

Hugo B. Goncalves

IEEE Trans. Circuits Syst. II Express Briefs, 2008

Synchronization of two LC- oscillators using capacitive coupling.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2008), 2008

2007

The Effect of Mismatches and Delay on the Quadrature Error of a Cross-Coupled Relaxation Oscillator.

[BibT_eX]

[DOI]

Michiel H. L. Kouwenhoven

IEEE Trans. Circuits Syst. I Regul. Pap., 2007

Experimental Evaluation of Phase-Noise and Quadrature Error in a CMOS 2.4 GHz Relaxation Oscillator.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2007), 2007

2006

Quadrature Van der Pol oscillators using second harmonic coupling.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2006), 2006

A 5-GHz combined oscillator/mixer.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2006), 2006

Synchronization of mutually coupled LC-oscillators.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2006), 2006

2005

On phase noise in quadrature cross-coupled oscillators.

[BibT_eX]

[DOI]

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2005), 2005

2004

A 2.4 GHz CMOS quadrature LC-oscillator/mixer.

[BibT_eX]

Proceedings of the 2004 International Symposium on Circuits and Systems, 2004

2003

A quadrature relaxation oscillator-mixer in CMOS.

[BibT_eX]

[DOI]

Michiel H. L. Kouwenhoven