Tiago Miguel Valente Varum

Tiago Varum

Academic position:	Researcher
Joining date:	07-11-2011
Roles in IT:	Researcher
Thematic Line:	Wireless Technologies
Group:	Radio Systems – Av

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

https://www.orcid.org/0000-0002-4766-9110

RESEARCHER ID SCOPUS SCHOLAR LinkedIn CienciaID

13-09-2022

PhD student Amélia Ramos wins the TICRA Foundation Grant

Amélia Ramos, a PhD student from IT and University of Aveiro, was distinguished with one of the eight TICRA Foundation Grants.

Bio

Tiago Varum was born in Estarreja, Portugal, in 1987. He got his M.Sc. degree in electronic and telecommunications engineering and Ph.D. degree in electrical engineering from the Universidade de Aveiro, Aveiro, Portugal in 2010, and 2016, respectively. Since 2017 he is Research Assistant at the Instituto de Telecomunicações, Aveiro. His main research interests include antenna design, Reconfigurable antennas, 3D-Printed antennas, non-uniform antenna arrays, beamforming and smart/adaptive antennas, for mmWave applications (Radar, 5G or SATCOM). During this time, he has participated in some projects and published several papers in this field, in conference proceedings and journals. He has also supported teaching activities in the department of electronics, telecommunications and informatics (DETI) of Universidade de Aveiro. Dr. Tiago is member of IEEE Antennas and Propagation Society.

Scientific Achievements

Degrees

PhD, Universidade de Aveiro, 07-12-2016
MSc, Universidade de Aveiro, 26-07-2010

Affiliations

Instituto de Telecomunicações, 01-01-2017, Assistant Researcher (PhD)
IEEE - Institute of Electrical and Electronics Engineers, 01-01-2013, Member
IEEE Antennas and Propagation Society, 01-01-2013, Member
Universidade de Aveiro, 01-01-2011 - 07-12-2016, PhD Student

Expertise Topics

Antenna Design, Smart Antennas, Microstrip Antennas, Planar Antenna Arrays, Beamforming

Academic Activities

4Lecture courses

Aplicacionais para Ciências e Engenharia, Universidade de Aveiro, Engenharia Electrónica e Telecomunicações
Programação em Matlab, Universidade de Aveiro, Engenharia Electrónica e Telecomunicações
Circuitos Eléctricos, Universidade de Aveiro, Engenharia Eletrónica e Telecomunicações
Análise de Circuitos, Universidade de Aveiro, Engenharia Electrónica e Telecomunicações

2Supervision of PhD theses

As Co-supervisor

Down-link Architectures for next Generation of LEO Satellite, PhD Student, Raul Miguel Marques Arruela, Expected conclusion 09-2023
Adaptative Antenna Array for LEO Constellations, PhD Student, Amélia da Silva Ramos, Expected conclusion 08-2023

13Supervision of MSc theses

As Co-supervisor

High-Frequency Polarization Reconfigurable Microstrip Patch Antenna, MSc Student, Filipa Domingues Antunes, Expected conclusion 12-2023
Techniques for Evaluation and Minimization of Coupling in Antenna Array Systems, MSc Student, Alexandre Braga Barbosa, Concluded 12-2022
Wide Scanning Conformal Antenna Array for SATCOM/5G Applications, MSc Student, Ângela Rodrigues Jesus Fernandes, Concluded 12-2021
3D-Printed Antennas using Dielectric and Conductive Materials for Modern Systems, MSc Student, Vitor Manuel Sousa Coelho, Concluded 12-2021
Design of a Transmitter/Receiver Front-End Radio Architecture for Satellite Communications, MSc Student, André Costa de Sousa, Concluded 07-2021
3D-Printed radiating structures for mmWave applications, MSc Student, Diogo Rodrigues Helena, Concluded 12-2019
Wideband Antenna Arrays for mmWave applications, MSc Student, JOÃO BERNARDO SANTOS CAIADO, Concluded 12-2019
Design of a Transmitter/Receiver Front-End Radio Architecture for Satellite Communications, MSc Student, JOSE GUILHERME ANTUNES DA SILVA, Concluded 12-2019
Reconfigurable Printed Antennas for mmWave Applications, MSc Student, LUÍS CARLOS PIRES RODRIGUES, Concluded 12-2019
Vector Modulator for Beamforming control architectures in the Ka band, MSc Student, João Henriques Martins, Concluded 07-2019
Multilayer radiating structures for mmWave, MSc Student, Amélia da Silva Ramos, Concluded 12-2018
Dinamic WIRELESS POWER TRANSMISSION (dWPT), MSc Student, André Daniel Araújo Santos, Concluded 12-2018
UWB RADAR for Medical Imaging, MSc Student, Beatriz Carvalho de Melo Ferreira, Concluded 12-2018

Publications

1Books Chapters

T. Varum, J. N. Matos, P. Pinho, Detect and Pointing Algorithms Performance for a 2D Adaptive Antenna Array, Chapter in, Antenna Arrays and Beam-formation, Prof. Modar Shbat, Intech Open, Rijeka-Croatia, 2017

22Papers in Journals

R. Arruela, T. Varum, J. N. Matos, A 3.6 GHz Polar Reflection-Type Vector Modulator Phase Shifter With Amplitude Control Capability, IEEE Access, Vol. 11, No. 1, pp. 10687 - 10695, January, 2023,
| Abstract | Full text (PDF 3 MBs) | BibTex
R. Correia, T. Varum, J. N. Matos, A. Oliveira, N.B.C. Carvalho, User Terminal Segments for Low-Earth Orbit Satellite Constellations: Commercial Systems and Innovative Research Ideas, IEEE Microwave Magazine, Vol. 23, No. 10, pp. 47 - 58, October, 2022 | Full text (PDF 1 MB) | BibTex
T. Varum, J.B.S.C. CAIADO, J. N. Matos, Compact Ultra-Wideband Series-Feed Microstrip Antenna Arrays for IoT Communications, Applied Sciences (Switzerland), Vol. 11, No. 14, pp. 6267 - 6267, July, 2021 | Full text (PDF 5 MBs) | BibTex
D. R. H. Helena, A. Ramos, T. Varum, J. N. Matos, The Use of 3D Printing Technology for Manufacturing Metal Antennas in the 5G/IoT Context, Sensors, Vol. 21, No. 10, pp. 3321 - 3321, May, 2021,
| Abstract | BibTex
A. Navarro, P. Mostardinha, T. Varum, J. N. Matos, S. Maslovski, Double-Dielectric Microstrip Ultrahigh-Frequency Antenna for Digital Terrestrial Television, Applied Sciences (Switzerland), Vol. 10, No. 23, pp. 8640 - 8640, December, 2020 | BibTex
A. Ramos, T. Varum, J. N. Matos, Compact N-Band Tree-Shaped Multiplexer-Based Antenna Structures for 5G/IoT Mobile Devices, Sensors, Vol. 20, No. 21, pp. 6366 - 6366, November, 2020,
| Abstract | BibTex
R. Arruela, D. MARINHO, T. Varum, J. N. Matos, Design and Characterization of an IQ Reflection-Type Vector Modulator for Ka-Band Using PIN Diodes, IEEE Access, Vol. 8, No., pp. 212855 - 212864, November, 2020,
| Abstract | Full text (PDF 2 MBs) | BibTex
D. MARINHO, R. Arruela, T. Varum, J. N. Matos, Software-Defined Radio Beamforming System for 5G/Radar Applications, Applied Sciences (Switzerland), Vol. 10, No. 20, pp. 7187 - 7187, October, 2020,
| Abstract | Full text (PDF 5 MBs) | BibTex
B Lopes, T. Varum, J. N. Matos, Use of FrFT in an indoor scenario for chipless RFID tags ID recovery, IET Microwaves, Antennas and Propagation, Vol. 14, No. 12, pp. 1316 - 1322, September, 2020,
| Abstract | BibTex
D. R. H. Helena, A. Ramos, T. Varum, J. N. Matos, Antenna Design Using Modern Additive Manufacturing Technology: A Review, IEEE Access, Vol. 8, No. 8, pp. 1 - 20, September, 2020,
| Abstract | Full text (PDF 4 MBs) | BibTex
L. Rodrigues, T. Varum, J. N. Matos, Reconfigurable Diplexer-Based Filtenna for Tx/Rx Operation in Mobile Satellite Terminals, Sensors, Vol. 20, No. 8, pp. 2333 - 2333, April, 2020 | BibTex
L. Rodrigues, T. Varum, J. N. Matos, The Application of Reconfigurable Filtennas in Mobile Satellite Terminals, IEEE Access, Vol. 1, No. 1, pp. 1 - 1, April, 2020 | BibTex
A. Ramos, T. Varum, J. N. Matos, Compact Multilayer Yagi-Uda Based Antenna for IoT/5G Sensors, Sensors, Vol. 18, No. 9, pp. 2914 - 2914, September, 2018 | BibTex
D. Malafaia, T. Varum, D. Matos, J. N. Matos, J. Vieira, The concept of a fully electronic beamforming antenna array for modern radar systems, Microwave and Optical Tech. Letters, Vol. 60, No. 7, pp. 1696 - 1702, May, 2018 | BibTex
M. DUARTE, T. Varum, J. N. Matos, P. Pinho, In-house development of 17 GHz antennas: Potentials and difficulties, URSI Radio Science Bulletin, Vol. 2018, No. 364, pp. 45 - 54, March, 2018 | BibTex
T. Varum, J. N. Matos, P. Pinho, Non-Uniform Microstrip Antenna Array for DSRC in Single-Lane Structures, Sensors, Vol. 16, No. 12, pp. 2101 - 2101, December, 2016 | BibTex
T. Varum, J. N. Matos, P. Pinho, R. Abreu, Nonuniform Broadband Circularly Polarized Antenna Aray for Vehicular Communications, IEEE Transactions on Vehicular Technology, Vol. 65, No. 9, pp. 7219 - 7227, September, 2016,
| Abstract | BibTex
D. Malafaia, J. Vieira, T. Varum, A. Tomé, Cognitive bio-radar: The natural evolution of bio-signals measurement, Journal of Medical Systems, Vol. 40, No. 10, pp. 1 - 2, August, 2016,
| Abstract | BibTex
T. Varum, J. N. Matos, P. Pinho, R. Abreu, Printed nonuniform antenna array for WI-FI sectorized communications, Microwave and Optical Tech. Letters, Vol. 57, No. 9, pp. 2037 - 2041, September, 2015 | BibTex
T. Varum, J. N. Matos, P. Pinho, Detect and pointing algorithm's performance for a planar smart antenna array: a review, Applied Computational Electromagnetics Society Journal, Vol. 30, No. 8, pp. 824 - 837, August, 2015 | BibTex
T. Varum, J. N. Matos, P. Pinho, Direction of Arrival Estimaation Analysis Using a 2D Antenna Array, Procedia Technology, Vol. 17, No. 1, pp. 617 - 624, November, 2014 | BibTex
T. Varum, J. N. Matos, P. Pinho, R. Abreu, A. Oliveira, J.A. Alves, Microstrip Antenna Array for Multiband Dedicated Short Range Communications, Microwave and Optical Tech. Letters, Vol. 53, No. 12, pp. 2794 - 2796, December, 2011,
| Abstract | BibTex

37Papers in Conferences

A. Ramos, T. Varum, R. Correia, J. N. Matos, A Multilayer Circularly Polarized Ka-Band Phased Array Module using Sequential Rotation, IEEE International Symposium on Antennas and Propagation, Denver, United States, Vol., pp. -, July, 2022,
| Abstract | Full text (PDF 443 KBs) | BibTex
VC COELHO, T. Varum, J. N. Matos, 3D-Printed wide beamwidth lens antennas for beamforming coverage improvement, European Conf. on Antennas & Propagation - EUCAP, Madrid, Spain, March, 2022 | Full text (PDF 353 KBs) | BibTex
A. Ramos, T. Varum, J. N. Matos, A Wideband Stripline-to-Stripline Transition for K/Ka-Bands, IEEE AP-S/URSI International Symp., Singapore, Singapore, December, 2021,
| Abstract | BibTex
A. Ramos, T. Varum, J. N. Matos, Compact Circularly Polarized Aperture Fed Patch Antenna for LEO Satellite Constellations, IEEE AP-S/URSI International Symp., Singapore, Singapore, December, 2021,
| Abstract | BibTex
J. N. Matos, T. Varum, R. Correia, SDA-Software Defined Antenna, Joint EuCNC & 6G Summit, Conference online, June, 2021 | Full text (PDF 129 KBs) | BibTex
A. Ramos, D. R. H. Helena, T. Varum, J. N. Matos, 3D Printed Horn Antenna for Satellite Communication Systems, 14.º Congresso do Comité Português da URSI, Conference online, December, 2020,
| Abstract | BibTex
T. Varum, A. Ramos, J.B.S.C. CAIADO, J. N. Matos, Wideband Series-Fed Microstrip Antenna Array for 5G/IoT Systems, 12th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing- CSNDSP, Porto, Portugal, July, 2020 | BibTex
A. Ramos, T. Varum, J. N. Matos, Compact Dual-Band Printed Monopole for 5G/IoT, 12th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing CSNDSP, Porto, Portugal, July, 2020,
| Abstract | Full text (PDF 611 KBs) | BibTex
L. Rodrigues, T. Varum, J. N. Matos, Reconfigurable Filtenna for 5G/LEO Constellations Mobile Terminals, The European Conference on Antennas and Propagation - EuCAP, Copenhagen, Denmark, April, 2020 | BibTex
D. R. H. Helena, A. Ramos, T. Varum, J. N. Matos, Inexpensive 3D-Printed Radiating Horns for Customary Things in IoT Scenarios, European Conf. on Antennas & Propagation - EUCAP, Copenhagen, Denmark, April, 2020 | Full text (PDF 428 KBs) | BibTex
J.B.S.C. CAIADO, T. Varum, J. N. Matos, Ultra-wideband log-periodic antenna array for LEO constellations terminals, Congresso do Comité Português da URSI, Lisboa, Portugal, December, 2019 | BibTex
J. H. M. Martins, T. Varum, J. N. Matos, Printed Vector Modulator for 5G Communications Systems, International Microwave and Optoelectronics Conf. - IMOC, Aveiro, Portugal, November, 2019 | Full text (PDF 628 KBs) | BibTex
L. Rodrigues, T. Varum, J. N. Matos, Concept of a Tri-band Frequency Reconfigurable Microstrip Patch Antenna, International Microwave and Optoelectronics Conf. - IMOC, Aveiro, Portugal, November, 2019 | BibTex
R. Arruela, D. MARINHO, T. Varum, J. N. Matos, A Ka-band Frontend for mmWave MIMO and Beamforming Applications, International Microwave and Optoelectronics Conf. - IMOC, Aveiro, Portugal, November, 2019 | Full text (PDF 641 KBs) | BibTex
D. MARINHO, R. Arruela, T. Varum, J. N. Matos, Application of Digital Beamforming to Software Defined Radio 5G/Radar Systems, International Microwave and Optoelectronics Conf. - IMOC, Aveiro, Portugal, November, 2019 | Full text (PDF 1 MB) | BibTex
A. Ramos, T. Varum, J. N. Matos, Design of a 28/38 GHz Compact Dual-Band Printed Monopole for 5G/IoT Sensors, Microwave and Optoelectronics Conference (IMOC) SBMO/IEEE MTT-S International IMOC, Aveiro, Portugal, November, 2019,
| Abstract | BibTex
D. R. H. Helena, A. Ramos, T. Varum, J. N. Matos, Evaluation of Different Materials to Design 3D Printed Horn Antennas for Ku-Band, Microwave and Optoelectronics Conference (IMOC) SBMO/IEEE MTT-S International IMOC, Aveiro, Portugal, November, 2019,
| Abstract | BibTex
T. Varum, J. N. Matos, Compact Slot Antenna Array for 5G Communications, IEEE AP-S/URSI International Symp., Atlanta, United States, July, 2019 | BibTex
A. Ramos, T. Varum, J. N. Matos, Integrated Multilayer Yagi Antenna for 5G, IEEE AP-S/URSI International Symp., Atlanta, United States, July, 2019 | BibTex
T. Varum, L. S. L. Leitão, J. N. Matos, Dual Band Printed Monopole Antenna for Wi-Fi Communications Systems, European Conf. on Antennas & Propagation - EUCAP, Krakow, Poland, April, 2019 | BibTex
T. Varum, A. Ramos, J. N. Matos, Planar Microstrip Series-fed Array for 5G Applications with Beamforming Capabilities, IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies IMWS-5G, Dublin, Ireland, August, 2018 | BibTex
T. Varum, J. N. Matos, Substrate Integrated Waveguide Antenna Array for Modern Beamforming Radars, IEEE AP-S/URSI International Symp., Boston, United States, July, 2018 | BibTex
T. Varum, M. DUARTE, J. N. Matos, P. Pinho, Microstrip Antenna for IoT/WLAN Applications in Smart Homes at 17GHz, European Conf. on Antennas & Propagation - EUCAP, London, United Kingdom, April, 2018 | BibTex
M. DUARTE, T. Varum, J. N. Matos, P. Pinho, In house development of 17GHz antennas: potentialities and difficulties, Congresso do Comité Português da URSI, Lisboa, Portugal, November, 2017 | BibTex
T. Varum, J. N. Matos, P. Pinho, Non-uniform microstrip antenna array for tolling using a single access lane, IEEE AP-S/URSI International Symp., Fajardo, Puerto Rico, Vol. 1, pp. 1 - 2, July, 2016 | BibTex
T. Varum, J. N. Matos, P. Pinho, Microstrip antenna array for a new tolling approach in highways access, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 1 - 4, September, 2015,
| Abstract | BibTex
T. Varum, J. N. Matos, P. Pinho, V. C. Duarte, Circularly polarized microstrip antenna array for the Ka-band, IEEE AP-S/URSI International Symp., Vancouver, Canada, Vol. 1, pp. 1864 - 1865, July, 2015 | BibTex
T. Varum, J. N. Matos, P. Pinho, R. Abreu, Non-uniform printed antenna array for wireless communications in sports arenas, European Conf. on Antennas & Propagation - EUCAP, Lisbon, Portugal, Vol. 1, pp. 1 - 4, April, 2015 | BibTex
R. F. Fernandes, J. N. Matos, P. Pinho, T. Varum, Wi-Fi intruder detection: An experimental approach, International Conf. on Emerging Security Information, Systems and Technologies - SECURWARE, Lisbon, Portugal, Vol. 1, pp. 101 - 105, November, 2014,
| Abstract | BibTex
R. F. Fernandes, J. N. Matos, P. Pinho, T. Varum, Wi-Fi Intruder Detection, IEEE Conf. on Wireless Sensors - ICWiSe, Kuala Lumpur, Malaysia, Vol. 1, pp. 96 - 99, October, 2014 | BibTex
T. Varum, J. N. Matos, P. Pinho, R. Abreu, Non-uniform microstrip antenna array for Rx DSRC communications, IEEE International Symp. on Antennas and Propagation - IEEE AP-S/USNC-URSI, Memphis, United States, Vol. 1, pp. 1071 - 1072, July, 2014 | BibTex
T. Varum, J. N. Matos, P. Pinho, R. Abreu, The impact of different power dividers used in a non-uniform planar antenna array, IEEE International Symp. on Antennas and Propagation - IEEE AP-S/USNC-URSI, Memphis, United States, Vol. 1, pp. 1690 - 1691, July, 2014 | BibTex
T. Varum, J. N. Matos, P. Pinho, A. Oliveira, Printed Antenna for DSRC Systems with Omnidirectional Circular Polarization, IEEE Conf. on Intelligent Transportation Systems, Anchorage, United States, Vol. 1, pp. 1 - 4, September, 2012,
| Abstract | BibTex
T. Varum, J. N. Matos, P. Pinho, Omnidirectional Circularly Polarized Antenna for DSRC Systems, IEEE AP-S/URSI International Symp., Chicago, United States, Vol. 1, pp. 1 - 2, July, 2012,
| Abstract | BibTex
T. Varum, J. N. Matos, P. Pinho, Printed antenna for On-Board Unit of a DSRC System, IEEE AP-S/URSI International Symp., Spokane, United States, Vol., pp. 457 - 460, July, 2011,
| Abstract | BibTex
T. Varum, J. N. Matos, P. Pinho, R. Abreu, Microstrip antenna for vehicular communications with improved axial ratio band, Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol., pp. 1 - 4, April, 2011,
| Abstract | BibTex
T. Varum, J. N. Matos, P. Pinho, Antena para comunicações DSRC, URSI Seminar of the Portuguese Committee, Lisbon, Portugal, Vol., pp. 1 - 4, September, 2010,
| Abstract | BibTex

Projects

Currently running projects1

Acronym	Name	Funding Agency	Start date	Ending date
ORCIP	Optical Radio Convergence Infrastructure for Communications and Power Delivering	PO Centro	01-05-2017	30-04-2029

Closed Projects4

Acronym	Name	Funding Agency	Start date	Ending date
HEADWAY	DSRC 5,9GHz	BIT/BRISA	01-01-2011	01-12-2012
RETIOT	Utilização de Tecnologias de Reflectometría no melhoramento do futuro Internet das Coisas e Sistemas Ciber-Físicos	P2020	09-01-2017	30-06-2021
RFoF DSRC	Fiber Optic connection to the antenna DSRC		01-01-2014	01-12-2014
STRx	SI I&DT Copromoção Nr. 033623 - STRx - Sistema de transmissão e receção de sinal de orientação eletrónica para a próxima geração de constelações de satélites	P2020	01-05-2019	31-12-2022

Other Scientific Achievements

3Awards

A. Ramos, D. R. H. Helena, T. Varum, J. N. Matos, 3D Printed Horn Antenna for Satellite Communication Systems, Third Place Award for Best Student Paper Award from 14th Congress of the Portuguese Committee of URSI with the paper "3D Printed Horn Antenna for Satellite Communication Systems"., 01-12-2020
A. Ramos, T. Varum, J. N. Matos, Smart Antennas for the Future Low-Earth Orbit Satellite Constellations, Best Pitch Electrical Engineering in Research Day of University of Aveiro in June 24-26, 2020, 01-06-2020
J.B.S.C. CAIADO, T. Varum, J. N. Matos, Ultra-wideband Log-periodic Antenna Array for LEO Constellations Terminals, 3rd Place for Best Student Paper Award from 13th Congress of the Portuguese Committee of URSI with the paper "Ultra-wideband Log-periodic Antenna Array for LEO Constellations Terminals", 17-12-2019, 01-12-2019

Other Contributions

7Refereeing Journals

Sensors
2020, 2 review(s);
IEEE Transactions on Vehicular Technology
2018, 1 review(s);
IET Microwaves, Antennas and Propagation
2020, 1 review(s);
engineering reports
2020, 1 review(s);
Electronics (Switzerland)
2020, 2 review(s);
IEEE Access
2020, 2 review(s);
International Journal of Communication Systems
2021, 1 review(s);

3Refereeing Conferences

European Conf. on Antennas & Propagation - EUCAP
2020, 1 review(s); 2019, 1 review(s);
IEEE Wireless Communications and Networking Conf. - WCNC
2020, 1 review(s);
IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing - CSNDSP
2020, 1 review(s);

IT Member Profile

Tiago Varum

13-09-2022

PhD student Amélia Ramos wins the TICRA Foundation Grant

Bio

Scientific Achievements

As Co-supervisor

As Co-supervisor

Currently running projects1

Closed Projects4