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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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