Dual reflectarray configurations for multibeam satellite antennas in Ka-band
| Autor: | Martínez de Rioja del Nido, Eduardo María, Encinar Garcinuño, José Antonio, Pino García, Antonio, González Valdés, Borja, Florencio Díaz, Rafael, Rodríguez Vaqueiro, Yolanda, Arias Acuña, Marcos |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Actas del XXXIV Simposium Nacional de la Unión Científica Internacional de Radio (URSI) 2019 | XXXIV Simposium Nacional de la Unión Científica Internacional de Radio (URSI) 2019 | 04/09/2019-06/09/2019 | Sevilla, España Archivo Digital UPM Universidad Politécnica de Madrid |
| Popis: | This contribution proposes the use of dual reflectarray (RA) configurations to provide multi-spot coverage in Ka-band from a geostationary satellite, using a smaller number of apertures and feeds than conventional reflector systems. A dual-RA configuration formed by a parabolic main RA and a flat RA subreflector has been designed to produce two spot beams in orthogonal circular polarization (CP) from a single feed in dual linear polarization (LP). The flat RA subreflector provides the required angular separation between the beams by implementing a different phase distribution in each LP, while the parabolic main RA performs the conversion from dual-LP into dual-CP. The simulated results show the feasibility of the proposed configuration and its potential to be used for multiple beam applications in Ka-band. |
| Databáze: | OpenAIRE |
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