Title :
A compact EHF/SHF dual-band reflector antenna
Author_Institution :
Bell Aerosp. Textron, New York, NY, USA
Abstract :
A new 5.5-in. diameter EHF/SHF dual-band reflector antenna was developed as an earth terminal for satellite communication. With minimal changes from an old design, this new design demonstrates significantly higher antenna efficiencies at both hands. The original design was a 5.5-in. diameter parabolic main reflector with a 1.87-in. focal length. One of the criteria for the new design is that the main reflector must stay the same. The single-shaped configuration with a parabolic main reflector and shaped subreflector turned out to be an excellent choice for this case. A test model was built and tested. Antenna gains of 27.0 dB at 20.7 GHz and 33.3 dB at 44.5 GHz, which are at least 0.5 dB higher than the antenna gain requirements, were obtained.<>
Keywords :
microwave antennas; satellite antennas; satellite ground stations; 20.7 GHz; 27 dB; 33.3 dB; 44.5 GHz; 5.5 in; EHF; SHF; antenna efficiencies; antenna gain; diameter; dual-band reflector antenna; earth terminal; focal length; parabolic main reflector; satellite communication; shaped subreflector; Aerospace testing; Antenna measurements; Coaxial components; Dual band; Feeds; Inductors; Reflector antennas; Satellite antennas; Satellite communication; Satellite ground stations;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.135032
