Title :
Novel dual-band single circular polarization antenna feeding network for satellite communications
Author :
Leal-Sevillano, Carlos A. ; Ruiz-Cruz, Jorge A. ; Montejo-Garai, Jose R. ; Rebollar, Jesus M.
Author_Institution :
Dept. Electromagnetismo y Teor. de Circuitos, Univ. Politec. de Madrid, Madrid, Spain
Abstract :
In 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.
Keywords :
antenna feeds; broadband antennas; multifrequency antennas; multiplexing equipment; polarisation; satellite antennas; satellite communication; transducers; antenna feed chain; axial ratio; biphase polarizer; broadband operation; diplexer; dual-band polarizer; dual-band single circular polarization antenna feeding network; frequency 20 GHz; frequency 30 GHz; orthomode transducer; satellite communications; subsystems interconnection; Antenna feeds; Dual band; Electromagnetic waveguides; Phase shifters; Polarization; Circular polarization; K/Ka band; antenna; diplexer; dual-band; multibeam; orthomode transducer; polarizer; satellite communications; waveguide;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6902525
