João Manuel Torres Caldinhas Simões Vaz

João Vaz

Academic position:	Associate Professor
Joining date:	04-10-2002
Roles in IT:	Senior Researcher
Thematic Line:	Wireless Technologies
Group:	Wireless Circuits – 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
Fax: +351 21 841 84 72

https://www.orcid.org/0000-0001-5745-3439

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SCHOLAR

12-07-2023

Out now IT NEWS nr. 107

The Issue 107 of our newsletter is out, bringing you IT news highlights for June 2023. Click to find more!

03-07-2023

Five IT researchers elected Presidents and Vice-Presidents of Portuguese Committee of URSI

Of the members elected, distributed among the six commissions, five are researchers from the Instituto de Telecomunicações.

09-06-2022

Open call for IT Labs at “Ciência Viva no Laboratório - Criação Futuro 2022”

IT participates in the “Ciência Viva no Laboratório - Criação Futuro 2022” program, a scientific occupation for young students on vacation.

Scientific Achievements

Degrees

PhD, Instituto Superior Técnico, 23-07-1998
MSc, Instituto Superior Técnico, 01-03-1991
Licenciatura, Instituto Superior Técnico, 30-09-1987

Affiliations

Instituto Superior Técnico, 28-07-1998, Associate Professor
IEEE - Institute of Electrical and Electronics Engineers, 01-12-1996, Senior Member
Ordem dos Engenheiros, 01-12-1987, Sócio

Expertise Topics

CMOS high-efficiency power amplifiers
CMOS frequency analog and digital synthesizers
CMOS and SiGe transceivers design
Ultra Low Power Design
CMOS Wireless Sensors for IoT
Monolhitic passive components design and characterization

Academic Activities

8Lecture courses

Electrónica IV, , Lic. Engenharia Electr. e Computadores
Electrónica de Rádio Frequência, Instituto Superior Técnico, Mestrado em Engenharia Electrotecnica e Computadores

Radio Frequency Integrated Circuit Design, Instituto Superior Técnico, Doutoramento em Engenharia Electrotécnica e de Computadores

Sistemas Integrados Analógicos, Instituto Superior Técnico, Mestrado em Engenharia Electrónica

Microelectrónica das Telecomunicações, Instituto Superior Técnico, Mestrado em Engenharia Electrónica

Electrónica 1, Instituto Superior Técnico, Mestrado Integrado em Engenharia Electrotécnica e de Computadores
Microelectrónica das Telecomunicações, Instituto Superior Técnico, Mestrado em Engenharia Electrónica

Sistemas Electrónicos Integrados, Instituto Superior Técnico, Mestrado em Engenharia Electrónica

3Supervision of PhD theses

As Supervisor

A fully integrated clock generator system for IoT radios, PhD Student, Sara Sofia Barbosa dos Santos, Expected conclusion 09-2027
An Ultra-Low Power Transceiver for Bluetooth-LE Applications, PhD Student, Marco António da Mota Carvalho Silva Pereira, Defended 04-2018

As Co-supervisor

Analysis, Modelling and Synthesis of CMOS Radio Frequency Discrete Tuning Varactors, PhD Student, Luís Miguel Moreira Mendes, Defended 02-2020

20Supervision of MSc theses

As Supervisor

Voltage references for IoT sensor nodes integrated circuits, MSc Student, Eduardo Daniel Roque Martins, Concluded 12-2024
Current references for IoT sensor nodes integrated circuits, MSc Student, José Pedro Garrucho de Oliveira, Concluded 12-2024
Energy Harvesting for Wireless Sensor Nodes, MSc Student, Diogo Marreiros Vieira Gomes, Concluded 11-2023
Light-Harvesting Battery Charger for IoT Sensor Node, MSc Student, Maísa Santos Craveiro Seidi, Concluded 06-2023
Wireless Sensor Networks for Environment Monitoring, MSc Student, Ismael Filipe Maia Gonçalves da Trindade, Concluded 12-2021
Conversor DC-DC elevador de tensão integrado para termogeradores de baixa potência, MSc Student, José Carlos Sequeira de Almeida, Concluded 12-2021
A low-power clock generator for IoT node systems, MSc Student, Maria De Noronha Jesus da Costa, Concluded 12-2021
Temperature and humidity sensor front-end for IoT applications, MSc Student, Miguel Fazendeiro de Andrade, Concluded 12-2021
Sintetizadores de Frequência Digitais CMOS para Sensores de Redes sem Fios, MSc Student, João Pedro Da Conceição Jardim, Concluded 10-2021
Amplificador de Potência CMOS para Sensores de Redes sem Fios BLE, MSc Student, Rúben Alexandre da Silva Fernandes, Concluded 10-2021
Coaxial to Microstrip Transition Modeling and Characterization, MSc Student, Rita Dias Carreira, Concluded 01-2021
Low-power clock generator system for wireless sensors networks, MSc Student, Sara Sofia Barbosa dos Santos, Concluded 10-2020
Integrated Power Management for IoT Wireless Node Chip, MSc Student, Pedro Filipe Francisco Marques, Concluded 11-2019
Sintetizador de frequência CMOS para Sensores de Redes sem Fios BLE, MSc Student, Jessica Micaela Rodrigues Caldas, Concluded 06-2018
Fully Integrated Magnetic Sensor for IoT Wireless Node, MSc Student, Bruno José Camacho Vieira Abreu, Concluded 05-2018
Low power temperature sensor for wireless sensors networks, MSc Student, José Manuel Ferreira Soares de Oliveira, Concluded 11-2017
Analysis and Modeling of Thermal Influence Between Two Adjacents RF Power Amplifiers, MSc Student, Emanuel José Campina Alves Baptista, Concluded 05-2017
Conversor Analógico Digital CMOS para Sensores de Redes sem Fios BLE, MSc Student, Guilherme Branco Teixeira, Concluded 05-2017

As Co-supervisor

Dissertation, MSc Student, João Gonçalo Cruz Silva, Concluded 03-2025
Magneto Resistive Sensors CMOS Frontend for Scalable Eddy Current Testing, MSc Student, Vasco Alexandre Sousa Luz, Concluded 10-2024

Publications

1Books Chapters

P. M. Santos, L. Mendes, J. Vaz, HJQ Quaresma, Chapter 8: Layout strategies for substrate crosstalk reduction in low cost CMOS processes, Chapter in, Noise Coupling in System-on-Chip, Thomas Noulis, CRC-Taylor & Francis Group, Boca Raton, 2017

15Papers in Journals

Early Access

L. Mendes, J. C. Silva Silva, N. Lourenço, J. Vaz, R. M. Martins, F. Passos, Fully Automatically Synthesized mm-Wave Low-Noise Amplifiers for 5G/6G Applications, IEEE Transactions on Microwave Theory and Techniques, Vol., No., pp. 1 - 0, 2025,
| Abstract | BibTex

Published

J. Almeida, P. M. Santos, J. Vaz, R. Lameirinhas, C. P. C. V. B. P. Correia V. Bernardo, J. Torres, Step-Up DC-DC Converter Supplied by a Thermoelectric Generator for IoT Applications, Energies, Vol. 17, No. 21, pp. 5288 - 5288, October, 2024,
| Abstract | Full text (PDF 1 MB) | BibTex
L. Mendes, J. Vaz, F. Passos, N. Lourenço, R. M. Martins, In-Depth Design Space Exploration of 26.5-to-29.5-GHz 65-nm CMOS Low-Noise Amplifiers for Low-Footprint-and-Power 5G Communications Using One-and- Two -Step Design Optimization, IEEE Access, Vol. 9, No. --, pp. 70353 - 70368, May, 2021,
| Abstract | Full text (PDF 3 MBs) | BibTex
M. Pereira, M. Assunção, J. Vaz, Analysis and Design of Current Mode Class-D Power Amplifiers With Finite Feeding Inductors, IEEE Transactions on Very Large Scale Integration (VLSI) Systems, Vol. 1, No. 1, pp. 1 - 10, February, 2020,
| Abstract | BibTex
M. Pereira, J. T. Sousa, J. Costa Freire, J. Vaz, A 1.7-mW -92-dBm Sensitivity Low-IF Receiver in 0.13-μm CMOS for Bluetooth LE Applications, IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 1, pp. 332 - 346, January, 2019 | BibTex
M. Pereira, J. Vaz, Power optimisation of both a high-speed counter and a retiming element for 2.4 GHz digital PLLs, Electronics Letters, Vol. 54, No. 4, pp. 284 - 285, March, 2018,
| Abstract | BibTex
M. Pereira, J. Vaz, A Single-Ended Modified Class-E PA With HD2 Rejection for Low-Power RF Applications, IEEE Solid-State Circuits Letters, Vol. 1, No. 1, pp. 22 - 25, January, 2018,
| Abstract | BibTex
M. Pereira, J. Vaz, C.A. Leme, J. Costa Freire, Gain Compression Improvement on Low-Power Cascaded Current Reuse LNAs, International Journal of Circuit Theory and Applications, Vol. 44, No. 10, pp. 1767 - 1779, October, 2016,
| Abstract | BibTex
M. Pereira, J. Vaz, C.A. Leme, J. T. Sousa, J. Costa Freire, A 170-μA All-Digital GFSK Demodulator with Rejection of Low SNR Packets for Bluetooth-LE, IEEE Microwave and Wireless Components Letters, Vol. 26, No. 6, pp. 452 - 454, June, 2016,
| Abstract | BibTex
L. Mendes, P. M. Santos, J. Vaz, Substrate noise isolation improvement in a single-well standard CMOS process, Integration, the VLSI Journal, Vol. 52, No. -, pp. 122 - 128, January, 2016,
| Abstract | BibTex
L. Mendes, E. S. Pires Pires, J. Vaz, M. Rosário, P. B. Oliveira, J. A. Machado, Automated Design of Microwave Discrete Tuning Differential Capacitance Circuits in Si Integrated Technologies, Microwave and Optical Tech. Letters, Vol. 52, No. 3, pp. 629 - 634, March, 2010 | BibTex
E. S. Pires Pires, L. Mendes, P. B. Oliveira, J. A. Machado, J. Vaz, M. Rosário, Design of Radio-Frequency Integrated CMOS Discrete Tuning Varactors Using the Particle Swarm Optimization Algorithm, Lecture Notes in Computer Science, Vol. --, No. 5518, pp. 1231 - 1239, June, 2009 | BibTex
L. Mendes, E. S. Pires Pires, P. B. Oliveira, J. A. Machado, N. M. Ferreira, J. Vaz, M. Rosário, Design Optimization of Radio Frequency Discrete Tuning Varactors, Lecture Notes in Computer Science, Vol. --, No. 5484, pp. 343 - 352, April, 2009 | BibTex
J. Vaz, J. Costa Freire, Millimeter-Wave Monolithic Power Amplifier for Mobile Broadband System, IEEE Transactions on Microwave Theory and Techniques, Vol. 49, No. 6, pp. 1211 - 1215, June, 2001 | BibTex
K. K. Tan, G.M. Marques, J. Vaz, J. Costa Freire, MMIC Lumped and Transversal Filter with LC Tuned Amplifiers, Microwave Engineering Europe, Vol. 1, No. 11, pp. 57 - 61, November, 1999 | BibTex

45Papers in Conferences

J. C. Silva Silva, L. Mendes, J. Vaz, Highly Flexible and Scalable Millimeter Wave Software Defined Radio, IEEE Mediterranean Electrotechnical Conference - MELECON, Porto, Portugal, Vol., pp. 538 - 543, June, 2024 | BibTex
J. Silva, L. Mendes, J. Vaz, Highly Flexible and Scalable Millimeter Wave Software Defined Radio, 17th Congress of the Portuguese Committee of URSI, Lisbon, Portugal, November, 2023 | BibTex
F. Passos, N. Lourenço, L. Mendes, R. M. Martins, J. Vaz, N. Horta, A 23.5–32.5GHz, 17dBm PSAT and 37.5% PAE Power Amplifier Synthesized Using an Automated Design Methodology, IEEE International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design - SMACD, Funchal, Portugal, July, 2023 | BibTex
F. Passos, N. Lourenço, L. Mendes, R. M. Martins, J. Vaz, N. Horta, A 23.5-32.5GHz, 17dBm PSAT and 37.5% PAE Power Amplifier Synthesized Using an Automated Design Methodology, IEEE International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design - SMACD, Funchal, Portugal, Vol., pp. -, July, 2023 | BibTex
F. Passos, R. M. Martins, N. Lourenço, L. Mendes, J. Vaz, N. Horta, Efficient Hierarchical mm-Wave System Synthesis with Embedded Accurate Transformer and Balun Machine Learning Models, Asia and South Pacific Design Automation Conference ASP-DAC, Tokyo, Japan, January, 2023,
| Abstract | BibTex
F. Passos, R. M. Martins, N. Lourenço, L. Mendes, J. Vaz, N. Horta, Efficient Hierarchical mm-Wave System Synthesis with Embedded Accurate Transformer and Balun Machine Learning Models, Asia and South Pacific Design Automation Conference ASP-DAC, Tokyo, Japan, Vol., pp. 64 - 69, January, 2023 | BibTex
L. Mendes, J. Vaz, F. Passos, N. Lourenço, R. M. Martins, Automatic Design of High-Gain 26.5-to-29.5-GHz Transformer-Less Low-Noise Amplifier 1.86-to-8.87-mW Variants in 65-nm CMOS, IEEE International Symposium on Circuits and Systems ISCAS, Austin, United States, May, 2022,
| Abstract | BibTex
EJB Baptista, K. Buisman, J. Vaz, C. Fager, Analysis of Thermal Coupling Effects in Integrated MIMO Transmitters, IEEE International Microwave Symposium IMS, Honolulu, United States, June, 2017 | BibTex
M. Pereira, J. C. Costa, M. Santos, J. Vaz, An 1µA Voltage Reference Circuit With High PSRR and Temperature Compensation, Conference on Design of Circuits and Integrated Systems DCIS, Lisbon, Portugal, Vol. 1, pp. 1 - 1, November, 2015 | BibTex
M. Pereira, J. Vaz, C.A. Leme, J. T. Sousa, J. Costa Freire, An Ultra-Low Power Low-IF GFSK Demodulator for Bluetooth-LE applications, IEEE International Symp. on Circuits and Systems - ISCAS, Lisbon, Portugal, Vol. 1, pp. 1226 - 1229, May, 2015,
| Abstract | BibTex
P.G. Pereira, M. Pereira, R.M.F. Alves, A.M.C. Costa, J. Vaz, C.A. Leme, All-Digital Phase Locked Loop for Bluetooth Low Energy Transmitters, Conf. on Design of Circuits and Integrated Systems, San Sebastian, Spain, Vol. 1, pp. 1 - 1, November, 2013,
| Abstract | BibTex
M. Pereira, J. Vaz, A 20 dBm Fully Integrated Single Stage CMOS Power Amplifier with 40 dB Power Gain, Conf. on Telecommunications - ConfTele, Castelo Branco, Portugal, Vol. 1, pp. 175 - 178, May, 2013,
| Abstract | BibTex
V. Canosa, M. Pereira, P. Gomes, J. Vaz, J. Costa Freire, Fully Integrated Switched Dual-Band CMOS LNA for 802.11b/g WLAN and WiMAX applications, European Microwave Integrated Circuits - EuMIC, Amsterdam, Netherlands, Vol., pp. 397 - 400, October, 2012,
| Abstract | BibTex
V. Canosa, M. Pereira, P. Gomes, J. Vaz, J. Costa Freire, Fully integrated switched dual-band CMOS LNA for 802.11b/g WLAN and WiMAX applications, European Microwave Integrated Circuits - EuMIC, Amsterdam, Netherlands, Vol., pp. 397 - 400, October, 2012 | BibTex
V. Canosa, J. Vaz, M. Pereira, Switched Dual-band CMOS LNA for 802.11b/g WLAN and WiMAX Applications, Conf. on Design of Circuits and Integrated Systems, Albufeira, Portugal, Vol., pp. 235 - 240, November, 2011 | BibTex
M. Pereira, J. Vaz, V. Canosa, A 2.45 GHz 30 dBm Differential 0.18 μm CMOS Class-E Power Amplifier with 42% PAE, Conf. on Design of Circuits and Integrated Systems, Albufeira, Portugal, Vol., pp. 381 - 385, November, 2011 | BibTex
R. F. Ribeiro Ribeiro, L. Mendes, J. Vaz, M. Rosário, J. Costa Freire, A 130 nm CMOS LNA for 30 GHz Applications, Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol. --, pp. -- - --, April, 2011 | BibTex
E. S. Pires Pires, L. Mendes, P. B. Oliveira, J. A. Machado, J. Vaz, M. Rosário, Maximin Spreading Algorithm, IEEE World Congress on Computational Intelligence - WCCI, Barcelona, Spain, Vol., pp. -- - --, July, 2010 | BibTex
F. Azevedo, L. Mendes, V. Fialho, J. Vaz, F. Fortes, M. Rosário, A 1.8V/5GHz CMOS WLAN Low Noise Amplifier Integrated with Active BALUN, Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. n, pp. n - n, May, 2009,
| Abstract | BibTex
J. Vaz, V. Fialho, A 2.4GHz CMOS Integer-N Phase-Locked Loop, Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. 0, pp. 0 - 0, May, 2009 | BibTex
F. Azevedo, L. Mendes, J. Vaz, F. Fortes, M. Rosário, A 5GHz/1.8V Low Power CMOS Low-Noise Amplifier, Asia Pacific Microwave Conf. - APMC, Hong Kong, China, Vol. 000, pp. 000 - 000, December, 2008,
| Abstract | BibTex
F. Azevedo, L. Mendes, J. Vaz, F. Fortes, M. Rosário, A 5GHz/1.8V CMOS Active Balun Integrated With LNA, Asia Pacific Microwave Conf. - APMC, Hong Kong, China, Vol. na, pp. na - na, December, 2008,
| Abstract | BibTex
L. Mendes, J. Vaz, M. Rosário, A Low Power Low Phase Noise Wide Switched Tuned Band LC VCO for S Band Applications, Asia Pacific Microwave Conf. - APMC, Hong Kong – Macau, Hong Kong, Vol. --, pp. -- - --, December, 2008 | BibTex
L. Mendes, E. S. Pires Pires, J. Vaz, M. Rosário, P. B. Oliveira, Automated Synthesis Procedure of RF Discrete Tuning Differential Capacitance Circuits, Asia Pacific Microwave Conf. - APMC, Hong Kong – Macau, Hong Kong, Vol. --, pp. -- - --, December, 2008 | BibTex
F. Azevedo, L. Mendes, J. Vaz, F. Fortes, M. Rosário, A Low Power 1.8V/5GHz Monolithic Low-Noise Amplifier, Jornadas de Engenharia de Electrónica e Telecomunicações e de Computadores do ISEL, Lisbon, Portugal, Vol. na, pp. na - na, November, 2008,
| Abstract | BibTex
E. S. Pires Pires, L. Mendes, P. B. Oliveira, J. Vaz, M. Rosário, Single-Objective Pareto Front Optimization: Application to RF Circuit Design, Genetic and Evolutionary Computation Conf. - GECCO, Atlanta, United States, Vol. --, pp. -- - --, July, 2008 | BibTex
L. Mendes, E. S. Pires Pires, J. Vaz, M. Rosário, A High-Performance Digitally Controlled LC Oscillator for Ku-Band Applications, IEEE International Conf. on Electronics, Circuits and Systems, Marrakech, Morocco, Vol. --, pp. -- - --, December, 2007 | BibTex
L. Mendes, E. S. Pires Pires, J. Vaz, M. Rosário, An Evolutionary Synthesis Algorithm to Design Optimum Performance CMOS RFSSCAs, IEEE International Conf. on Electronics, Circuits and Systems, Marrakech, Morocco, Vol. --, pp. -- - --, December, 2007 | BibTex
J. Torres, J. Vaz, J. Costa Freire, 30GHz Amplifiers with 0.25ƒÝm SiGe BiCMOS, IEEE International Conf. on Electronics, Circuits and Systems, marrakesh, Morocco, Vol. I, pp. 0 - 0, December, 2007 | BibTex
F. Azevedo, F. Fortes, J. Vaz, M. Rosário, A Wideband CMOS LNA Integrated with Balun and Linear Digital Gain Control, IEEE International Conf. on Electronics, Circuits and Integrated Systems - ICECS, Marrakesh, Morocco, Vol. na, pp. na - na, December, 2007 | BibTex
E. S. Pires Pires, L. Mendes, P. B. Oliveira, J. A. Machado, N. M. Ferreira, J. Vaz, M. Rosário, Single-Objective MaxMin Sorting Scheme: Application to Radio Frequency Circuit Design, International Conf. on Electrical Engineering, Coimbra, Portugal, Vol. --, pp. -- - --, November, 2007 | BibTex
F. Azevedo, F. Fortes, J. Vaz, M. Rosário, A 1.7V Wideband CMOS Low Noise Amplifier with Linear Digital Gain Control, International Microwave and Optics Conf., Salvador BA, Brazil, Vol. na, pp. na - na, October, 2007 | BibTex
L. Mendes, E. S. Pires Pires, J. Vaz, M. Rosário, Automated Design of Radio-Frequency Single-Ended Switched Capacitor Arrays using Genetic Algorithms, Midwest Symp. on Circuits and Systems, Montréal, Canada, Vol. --, pp. -- - --, August, 2007 | BibTex
L. Mendes, J. Vaz, M. Rosário, Wide Tuning Band Low Phase Noise LC Voltage Controlled Oscillators Designed in Low Cost CMOS Technologies, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. --, pp. -- - --, May, 2007 | BibTex
G. St´Aubyn, J. Vaz, J. Costa Freire, Voltage Controlled Phase Shifters on CMOS Technology, Asia Pacific Microwave Conf. - APMC, Yokohama, Japan, Vol. 1, pp. 1 - 1, December, 2006 | BibTex
L. Mendes, J. Vaz, M. Rosário, Performance of Si-Integrated Wide-Band Single-Ended Switched Capacitor Arrays, IEEE International Conf. on Electronics, Circuits and Systems, Nice, France, Vol. --, pp. -- - --, December, 2006 | BibTex
J.O. Oliveira, J. Vaz, A CAD Oriented Method for Monolithic LC VCO Design, Conf. on Design of Circuits and Integrated Systems, Barcelona, Spain, Vol. 1, pp. 1 - 1, November, 2006 | BibTex
L. Mendes, J. Vaz, M. Rosário, Modeling of CMOS or BiCMOS Ultra-Wide-Band Single-Ended Switched Capacitor Arrays, Conf. on Design of Circuits and Integrated Systems, Barcelona, Spain, Vol. --, pp. -- - --, November, 2006 | BibTex
L. Mendes, J. Vaz, M. Rosário, A Closed-Form Input Admittance Solution for RF and Microwave Switched Capacitor Arrays, IEEE International Symp. on Circuits and Systems - ISCAS, San Juan, Puerto Rico, Vol. --, pp. -- - --, August, 2006 | BibTex
L. Mendes, J. Vaz, M. Rosário, Fully Integrated CMOS LC Voltage Controlled Oscillator for IEEE802.11a and HiperLAN2 WLAN Transceivers, International Conf. on Electrical Engineering, Coimbra, Portugal, Vol. na, pp. na - na, October, 2005 | BibTex
J. Bernardino, J. Vaz, High Q MMIC GaAs Active Filter for K Band Subsystems, Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. na, pp. na - na, April, 2005 | BibTex
J. Vaz, M. Rosário, J. Costa Freire, Low Cost Si MMIC Design for RF Front Ends, Asia Pacific Microwave Conf. - APMC, New Delhi, India, Vol., pp. 1 - 2, December, 2004 | BibTex
J.O. Oliveira, J. Vaz, Oscilador Sinusoidal LC em Tecnologia BiCMOS para 2.4GHz, Workshop de Investigação e Desenvolvimento em Engenharia Electrotécnica e das Telecomunicações, Castelo Branco, Portugal, Vol. 1, pp. 1 - 1, February, 2004 | BibTex
M. Rosário, F. Le-Strat, P. Alleaume, J. Vaz, J. Schrotg, T. Mueller, J. Costa Freire, Low Cost LTCC Filters for a 30GHz Satellite System, European Microwave Conf. - EMC, Munique, Germany, Vol. 1, pp. 817 - 820, October, 2003 | BibTex
J.O. Oliveira, J. Vaz, A 2.4GHz LC-tuned VCO in BiCMOS technology, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 531 - 533, June, 2003 | BibTex

Projects

Currently running projects2

Acronym	Name	Funding Agency	Start date	Ending date
ACTON	Accelerating the Future 5G/6G Deployments with Millimeter Wave Integrated Circuit Interfaces Generated by Deep Computer Vision	FCT	01-02-2024	31-07-2026
POEMS	PORTUGUESE COMPETENCE CENTRE IN SEMICONDUCTORS	CHIPS JU	01-03-2025	28-02-2029

Closed Projects15

Acronym	Name	Funding Agency	Start date	Ending date
ACTFIL	Active filters	IT/LA	01-01-2004	31-12-2005
AME	Advanced Microelectronics Engineering	ICEP	01-10-2002	22-10-2003
COMMET	A COmplete analog front-end for 3G MultiMEdia Terminals	ADI	01-11-2002	31-10-2005
Digital_PAs	Digital_PAs - Digital RF Power Amplifiers for Wireless Applications	FCT/PTDC	01-01-2009	01-06-2012
GALACTIC	Innovative GaAs MMICs and Avanced LTCC packaging technologies for multicomponents Ka Band subsystems	EU	01-01-2002	31-12-2004
HAICAS	Hierarchical Analog IC Automatic Synthesis	IT	01-05-2020	30-04-2022
IRFDCMOS	Integration of high-frequency dc-dc converters in RF CMOS SoC	IT/LA	01-09-2005	01-06-2008
LAY(RF)^2	Ready-to-Fabricate RF and mmWave Integrated Circuit Layouts	IT	01-02-2020	31-01-2022
LDMOSCA	Low Distortion RF MOS Circuits Advances	FCT/POCTI	01-01-2001	31-12-2002
NLRFCMOS	Desenvolvimento de modelos não lineares de dispositivos para microondas e integração monolítica de circuitos não lineares em silício para telecomunicações	CRUP	01-01-2003	31-12-2004
SiGeM	Silicon Germanium MMICs for RF Front End Transceivers	IT/LA	01-10-2005	01-07-2008
SWIPA	Switching Mode Power Amplifiers for Wireless Communications	IT/LA	01-11-2008	01-11-2010
uFlexBat	Batteryless energy supply system based on flexible organic photovoltaic cells	IT/LA	01-12-2016	30-06-2019
WiFiRx	Double-Band Multi_standard Frequency Front-End for WLAN aplications	FCT/PTDC	01-09-2007	01-04-2010
WSN_EM	Wireless Sensor Network for Environmental Monitoring	FCT	01-09-2018	31-08-2022

Other Scientific Achievements

4Awards

J. Vaz, Excellent teacher on MT course, Considered excellent teacher on "Microelectrónica das Telecomunicações" MSc course, 1st term, 2017-2018., 01-05-2018
J. Vaz, Excellent teacher SIA course, Considered excellent teacher on "Sistemas Integrados Analógicos" MSc course, 2nd term, 2017-2018., 01-05-2018
J. Vaz, Docente Excelente, Considerado docente excelente relativamente à disciplina de Electrónica 1 leccionada no 2º semestre do ano lectivo 2010/11 no Mestrado Integrado em Engenharia Electrotécnica e Computadores., 01-01-2012
J. Costa Freire, G.M. Marques, W. Tam, J. Vaz, MMIC Lumped and Transversal Filter with LC Tuned Amplifiers, Best Poster at GAAS'99 (, 05-10-1999

3Short Courses and Seminars

J. Vaz, EMERGENT TECHNOLOGIES FOR FUTURE WIRELESS SYSTEMS, Portugal, Aveiro, 09-2012
J. Vaz, Introdução às Telecomunicações” (Ciência Viva no Laboratório – Ocupação Científica de Jovens nas Férias), Portugal, Lisboa, 07-2012
J. Vaz, High-Efficiency Radiofrequency Power Amplifiers, Macau, Macau, 07-2011

1Prototypes

J. Vaz, M. Pereira, J. T. Sousa, Bluetooth Low Energy CMOS radio

Other Contributions

1Conference Committees

Invited to chair Session 7b of XX Conference on Design of Circuits and Integrated Systems, Lisboa, Portugal, Outubro 2005., Sessions Chairman, 2005

7Refereeing Journals

ETRI Journal
2013, 1 review(s); 2005, 1 review(s);
IEEE Microwave Magazine
2016, 1 review(s); 2012, 1 review(s); 2011, 1 review(s);
Integration, the VLSI Journal
2016, 1 review(s);
IEEE Transactions on Circuits and Systems II: Express Briefs
2020, 1 review(s); 2017, 1 review(s); 2016, 3 review(s);
IEEE Transactions on Circuits and Systems I: Regular Papers
2020, 1 review(s);
IEEE Transactions on Microwave Theory and Techniques
2014, 1 review(s); 2013, 1 review(s); 2010, 2 review(s); 2009, 1 review(s); 2008, 2 review(s); 2006, 1 review(s);
Wireless Personal Communications
2011, 1 review(s);

4Refereeing Conferences

IEEE International Symp. on Circuits and Systems - ISCAS
2015, 1 review(s); 2014, 1 review(s); 2013, 1 review(s); 2012, 1 review(s); 2011, 1 review(s); 2009, 1 review(s);
Conf. on Design of Circuits and Integrated Systems
2012, 1 review(s); 2009, 1 review(s); 2006, 1 review(s); 2005, 1 review(s); 2004, 1 review(s); 2003, 1 review(s); 2002, 1 review(s); 2000, 1 review(s); 1999, 1 review(s);
Conf. on Telecommunications - ConfTele
2009, 1 review(s); 2005, 1 review(s); 2003, 1 review(s); 2001, 1 review(s);
International Conf. on Telecommunications - ICT
2006, 1 review(s);

Related UN SDG

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

IT Member Profile

João Vaz

12-07-2023

Out now IT NEWS nr. 107

03-07-2023

Five IT researchers elected Presidents and Vice-Presidents of Portuguese Committee of URSI

09-06-2022

Open call for IT Labs at “Ciência Viva no Laboratório - Criação Futuro 2022”

Scientific Achievements

As Supervisor

As Co-supervisor

As Supervisor

As Co-supervisor

Currently running projects2

Closed Projects15