RT Journal Article T1 Advanced multibeam antenna configurations based on reflectarrays: providing multispot coverage with a smaller number of apertures for satellite communications in the K- and Ka-bands A1 Martínez de Rioja, Eduardo A1 Martínez de Rioja, Daniel A1 Encinar, José A A1 Pino García, Antonio A1 González Valdés, Borja A1 Rodríguez Vaqueiro, Yolanda A1 Arias Acuña, Alberto Marcos A1 Toso, Giovanni K1 3325.06 Comunicaciones Por Satélite AB This article presents some recent developments in multiplebeam antennas (MBAs) based on reflectarrays for communication satellites in the Kurz (K) and Kurz-above (Ka) bands. The existing high-throughput satellites commonly employ four reflector antennas to provide cellular coverage that is formed by multiple spot beams in a four-color scheme. Reflectarray antennas are proposed as an attractive solution for the design of novel MBA configurations to produce multispot coverage, with a smaller number of apertures than conventional MBA systems based on reflector technology. Single and dual reflectarray configurations have been considered for the purpose of exploiting their ability to produce independent beams in different polarizations and frequencies. PB IEEE Antennas and Propagation Magazine SN 10459243 YR 2019 FD 2019-10 LK http://hdl.handle.net/11093/5414 UL http://hdl.handle.net/11093/5414 LA eng NO IEEE Antennas and Propagation Magazine, 61(5): 77-86 (2019) NO Agencia Estatal de Investigación | Ref. TEC2016-75103-C2-1-R DS Investigo RD 12-feb-2025