Speaker: Alejandro Baldominos-Delgado (ISSS)
Time: 2pm to 3pm, Thursday, 10 June, 2021.
Venue: online (Please contact Dr. Yuan Ding for access)
Title: Efficient estimation of multibeam antenna performance based on reflector configurations
Broadband connectivity has driven significant satellite system developments over the past decade. Multiple technologies have been proposed to meet connectivity requirements. Multibeam antennas (MBA) for Very High Throughput Satellite (VHTS) systems are presented as one of the technologies with promising future perspectives due to their good performance. These systems are commonly based on a high number of feeds in several configurations to generate many beams, which highly increases their complexity. One of the preferred systems are imaging antennas based on single reflector configurations, as they provide a good compromise between scanning capabilities, high gain and system complexity. Unfortunately, traditional methods for the analysis of reflector antennas are based on time-consuming numerical integrations which combined with the large number of beams to be estimated, leads to high computing times. During this talk, an efficient tool for the analysis of reflector antennas when a large number of beams is used is presented. The tool can work with several configurations (SFPB, MFPB, imaging antennas…) and its main objective is the optimization of the antenna payload system in terms of coverage metrics such as Carrier-to-Interference ratio and throughput.
Alejandro Baldominos-Delgado was born in Guadalajara, Spain, in 1995. He received the BEng (Honours) and M.Sc. degrees in Telecommunications Engineer in University of Alcalá, in 2017 and 2019 respectively. He worked during his student years in several projects of software for satellite applications in the Space Research Group of University of Alcalá and as an antenna engineer in the framework of RadioNet project in Yebes Observatory, with a strong background in reflector antennas and broadband feed systems for radio astronomy. As a result of his work in this framework, he finished his master’s thesis “Optimization of astronomical feed antennas with genetic algorithms”. He is currently working towards the Ph.D. degree at Heriot-Watt University. His research interests include analysis and design of reflector antennas and signal processing such as beamforming and precoding techniques for satellite communication systems.