Novel Dual-Band Single Circular Polarization Antenna Feeding Network for Satellite Communications

TítuloNovel Dual-Band Single Circular Polarization Antenna Feeding Network for Satellite Communications
Tipo de publicaciónConference Paper
Year of Publication2014
AutoresLeal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar
Conference NameProc. 2014 European Conference on Antennas and Propagation (EuCap)
Date PublishedApr.
Palabras claveantenna, Circular polarization, diplexer, dual-band, K/Ka band, multibeam, orthomode transducer, polarizer, satellite communications, waveguide
ResumenIn this paper a novel dual-band single circular polarization antenna feeding network for satellite communications is presented. The novel antenna feed chain1 is composed of two elements or subsystems, namely a diplexer and a bi-phase polarizer. In comparison with the classic topology based on an orthomode transducer and a dual-band polarizer, the proposed feed chain presents several advantages, such as compactness, modular design of the different components, broadband operation and versatility in the subsystems interconnection. The design procedure of this new antenna feed configuration is explained. Different examples of antenna feeding networks at 20/30 GHz are presented. It is pointed out the excellent results obtained in terms of isolation and axial ratio.