Beamforming techniques for multiple beam antenna systems in satellite and terrestrial communication networks

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Recent developments in both terrestrial and non-terrestrial networks are focused on multiple beam antenna systems to increase data rates and to provide more flexibility in resource allocation. Some synergies between space and terrestrial systems are emerging as the fifth-generation (5G) of wireless systems introduce millimeter-wave frequencies for short-range and indoor applications. This provides a unique opportunity for the transfer of technology, as requirements for satcom user terminals and cell tower antennas present some similarities. While phased array antennas are getting a great deal of attention, their cost still remains high for mass-market applications and alternative solutions based on simpler beamforming techniques are being considered. These solutions are also of interest in radar systems and microwave instruments combining high resolution and wide angular field of view. This talk will review well-known beamforming techniques, including Butler, Blass and Nolen matrices, and discuss their respective advantages and limitations. Recent developments, including a first demonstration of a planar array with a triangular lattice of beams, will be presented. The talk will also provide a discussion of current technology limitations and directions for future developments.   



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  • Date: 12 Nov 2021
  • Time: 10:00 AM to 11:30 AM
  • All times are (GMT-05:00) Canada/Eastern
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  • Co-sponsored by INRS, STARaCom
  • Starts 03 November 2021 08:50 AM
  • Ends 12 November 2021 10:10 AM
  • All times are (GMT-05:00) Canada/Eastern
  • No Admission Charge


  Speakers

Nelson J. G. Fonseca of European Space Agency

Biography:

Nelson J. G. Fonseca received the M.Eng. degree from Ecole Nationale Supérieure d’Electrotechnique, Electronique, Informatique, Hydraulique et Télécommunications (ENSEEIHT), Toulouse, France, in 2003, the M.Sc. degree from the Ecole Polytechnique de Montreal, Quebec, Canada, also in 2003, and the PhD degree from Institut National Polytechnique de Toulouse – Université de Toulouse, France, in 2010, all in electrical engineering. He works in the Antenna and Sub-Millimetre Waves Section, European Space Agency (ESA), Noordwijk, The Netherlands. Since November 2020, he has held an Honorary Appointment as Professional Fellow at the University of Technology Sydney (UTS), Australia. His research interests include multiple beam antennas for space missions, beam-former theory and design, ground terminal antennas, transfer of technology from and to terrestrial systems, including 5G networks, and novel manufacturing techniques. He has authored or co-authored more than 230 papers in peer-reviewed journals and conferences and has over 50 patents issued or pending. Dr. Fonseca served as the Chair of the 38th ESA Antenna workshop on Innovative Antenna Systems and Technologies for Future Space Missions, October 2017, and as the Co-Chair of the 2018 IET Loughborough Antennas & Propagation conference (LAPC 2018). He is currently serving as an Associate Editor for the IET Microwave, Antennas and Propagation (MAP) and for the IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES (TMTT), and as a Topic Editor for the IEEE JOURNAL OF MICROWAVES (JMW). He is also serving as the Co-Vice Chair of the newly founded IEEE MTT-S Technical Committee 29 (MTT-29) on Microwave Aerospace Systems. He is a board member of the European School of Antennas (ESoA) since January 2019 and the elected EurAAP Regional Delegate representing Benelux for the term 2021-2023. He received several prizes and awards, including the Best Young Engineer Paper Award at the 29th ESA Workshop on Antennas in 2007, an ESA Teamwork Excellence Award in 2020 as well as multiple ESA Technical Improvement Awards.

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