Antenna with optimized pattern for simultaneous reception of terrestrial signals and signals of geostationary satellites

[摘要] The link margin for satellite communication services targeting mobile usersis tight. This leads to reception problems in areas with strong fadingscenarios like urban areas or forested areas with dense foliage. In order toavoid loss of service in urban areas with week coverage by satellite signals,terrestrial repeaters are used. Therefore in the design of antennas formobile reception of satellite services, an optimized characteristics for thesatellite constellation, as well as an adequate coverage of the terrestrialrepeaters has to be accounted for. In this paper an antenna with optimumshaped pattern for the satellite mode and adjustable gain for verticalpolarization is investigated. Beside constraints regarding the radiationpattern, measurements concerning the dependence of the antenna on noisetemperature and therefore the behavior in real noisy environments are carriedout. A comparison with a conventional antenna shows the high performance ofthe new antenna in combination with a very low volume requirement.

[学科分类] 电子、光学、磁材料