发明名称 A cellular/satellite communications system with generation of a plurality of sets of intersecting antenna beams
摘要 A satellite system includes circuitry for forming at least a first and second set of antenna beams for communication with a respective first and second set of mobile stations. Neighboring beams in the first set intersect at an approximately -4 dB down point relative to the central beam peak, thereby defining for each beam an approximately -4 dB beam circumference having an approximately -4 dB beam diameter. The second set of antenna beams are displaced from the first set of antenna beams by less than the approximately -4 dB beam diameter.
申请公布号 US5594941(A) 申请公布日期 1997.01.14
申请号 US19950442168 申请日期 1995.05.16
申请人 ERICSSON INC. 发明人 DENT, PAUL W.
分类号 H04J1/00;H01Q1/24;H01Q1/28;H01Q21/08;H01Q21/28;H01Q25/00;H04B7/08;H04B7/10;H04B7/185;H04B7/204;H04B7/212;H04J3/00;H04L1/00;H04L1/06;H04L25/03;H04W16/02;H04W16/14;H04W74/08;H04W84/02;H04W84/04;H04W84/06;(IPC1-7):H04B7/185;H04B7/26 主分类号 H04J1/00
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