Publications

User Terminal Segments for Low-Earth Orbit Satellite Constellations

User Terminal Segments for Low-Earth Orbit Satellite Constellations: Commercial Systems and Innovative Research Ideas

Collaboration between Instituto de Telecomunicações of Aveiro, University of Aveiro and Sinuta that summarizes most of user terminals developed for LEO constellations from the companies to research units. The specifications of Starlink, OneWeb, Lightspeed and Kuiper constellations were also explored.

05 September 2022

A Multilayer Circularly Polarized Ka-Band Phased Array Module using Sequential Rotation

A Multilayer Circularly Polarized Ka-Band Phased Array Module using Sequential Rotation

Collaboration between Instituto de Telecomunicações of Aveiro, University of Aveiro and Sinuta to develop a new circularly polarized 4×4 antenna array with beamforming capabilities. By using the sequential rotation technique, it was possible to achieve wide scan angles, both LHCP/RHCP, while maintaining the axial ratio (AR) below 3 dB between 27.5-30 GHz, with a maximum gain of 14 dBi.

10 – 15 July 2022

Backscatter Communications as a new paradigm for IoT sensor wireless solutions

Collaboration between Instituto de Telecomunicações of Aveiro, University of Aveiro, Sinuta, Heriot-Watt University and Georgia Institute of Technology to address backscatter communications as a new paradigm for Internet of Things sensor wireless solutions. The paper clearly presents the history background of the technology and then makes a summary of the more recent developments form several groups around the world, with emphasis in US and Europe groups.

29 September 2021

Ultra-Wideband 4-PAM Backscatter Modulator based on BiCMOS technology for IoT/WPT Applications

Collaboration between Instituto de Telecomunicações of Aveiro, University of Aveiro and Sinuta to develop a PAM backscatter modulator based on BiCMOS technology chip for Wireless Power Transmission applications. A Software Defined Radio was also used to demodulate the received modulated signals.

23 June 2021

Millimeter-Wave Hybrid RF-DC Converter Based on a GaAs Chip
for IoT-WPT
Applications

Collaboration between Instituto de Telecomunicações of Aveiro, University of Aveiro and Sinuta to develop a millimeter wave hybrid RF-DC converter based on a Gallium Arsenide technology for Wireless Power Transmission applications.

22 February 2021

Implementation Challenges and Opportunities in Beyond-5G and 6G Communication

Collaboration between Ericksson Research, Chalmers University of Technology, Department of Information Technology and Electrical Engineering of Zurich, University of Oulu,  Instituto de Telecomunicações of Aveiro, University of Aveiro and Sinuta to outline some of the opportunities and the associated key challenges facing the evolution beyond-5G wireless communication.

11 January 2021

Millimeter-Wave BiCMOS Backscatter Modulator
for 5G-IoT
Applications

Collaboration between Instituto de Telecomunicações of Aveiro, University of Aveiro and Sinuta to develop a millimeter wave high-order backscatter modulator based on a BiCMOS technology for 5G and Internet of Things applications.

16 December 2020

Quasi Millimiter-Wave 3-Stage Power Amplifier with Tunable Integrated Antenna for Space Applications

Collaboration between Instituto de Telecomunicações of Aveiro, University of Aveiro and Sinuta to design an integrated solution composed by a power amplifier with a tunable antenna in 0.25μm Gallium Arsenide technology at millimeter wave frequencies.

13 December 2019