发明名称 |
Satellite communications apparatus using active redundancy |
摘要 |
An active redundancy system for high power satellite communications payloads that use multiple antenna beams driven by multiple power amplifiers and that require power redistribution among the beams during the lifetime of a payload uses a number of power amplifiers equal to or greater than the number of antenna feeder elements to provide extra output power at the beginning of life, instead of commonly used redundancy switches. As power amplifiers fail, the amplitude and phase of the signals driving the remaining power amplifiers are adjusted to maintain antenna performance. Power amplifiers having sufficient capacity are used to ensure that, given an anticipated number of power amplifier chain failures, performance requirements can be met at the end of life.
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申请公布号 |
US5818388(A) |
申请公布日期 |
1998.10.06 |
申请号 |
US19960659783 |
申请日期 |
1996.06.06 |
申请人 |
HUGHES ELECTRONICS CORPORATION |
发明人 |
LANE, STEVEN O.;TOMEI, BRUCE A.;DAVIS, WILLIAM F. |
分类号 |
H04B7/204;(IPC1-7):H01Q3/22 |
主分类号 |
H04B7/204 |
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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