发明名称 |
Reconfigurable zonal beam forming system for an antenna on an orbiting satellite and optimisation procedure for the reconfiguration |
摘要 |
<p>The system divides (SP) an incoming signal into a number of channels. Each channel has a variable phase shifter and amplifier (Amp1-Amp4) which inputs a Butler matrix (FCN). The Butler matrix outputs feed a number of variable channel phase shifters and the phase-shifted outputs feed antenna source radiating elements (S1-S4). By setting the input and output variable phase shifters, the amplitudes of the signals from the radiating elements can be made equal and the shape of the zone can be configured. A variable attenuator can be cascaded with the input phase shifters.</p> |
申请公布号 |
EP0817309(A1) |
申请公布日期 |
1998.01.07 |
申请号 |
EP19970401235 |
申请日期 |
1997.06.03 |
申请人 |
AGENCE SPATIALE EUROPEENNE |
发明人 |
JONES, TREVOR HOWARD PRICE;YARWOOD, MICHAEL PHILIP;FOLIO, BENEDICTE;LAMBRECHT, XAVIER J. F. |
分类号 |
H01Q1/28;H01Q3/40;H04B7/185;H04B7/204;(IPC1-7):H01Q3/40 |
主分类号 |
H01Q1/28 |
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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