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1. 发明授权

US4951013A Phase shift controlled broadcast switching system 失效
标题翻译：相移控制广播切换系统
公开(公告)号：US4951013A
公开(公告)日：1990-08-21
申请号：US202771
申请日：1988-06-03
申请人： William A. DeCormier , David B. Folsom , Philip C. Noll
发明人： William A. DeCormier , David B. Folsom , Philip C. Noll
IPC分类号： H01P1/10
CPC分类号： H01P1/10
摘要： A broadcast switching system includes at least two sources, such as power amplifiers or transmitters; a waste or dummy load; and an antenna. A non-contacting switching arrangement for such a system includes directional or hybrid couplers for suitably cross-coupling portions of the signals from each of the sources. The present system is such that at least two couplers of nominally identical value may be employed regardless of input power ratios and yet, required power levels can be obtained at the outputs by reason of the deployment of phase shifters providing controlled phase delays over the entire range, which phase delays are precisely selectable for a full range of input power ratios. Although a nominal coupling value of -3 dB for the couplers may be utilized, the invention is not necessarily restricted to this value.
摘要翻译：广播交换系统包括至少两个源，例如功率放大器或发射机; 浪费或虚拟负载; 和天线。用于这种系统的非接触式开关装置包括用于适当地交叉耦合来自每个源的信号的部分的定向或混合耦合器。本系统使得可以采用名义上相同的值的至少两个耦合器，而不管输入功率比如何，并且由于在整个范围上提供受控相位延迟的移相器的部署，可以在输出端获得所需的功率电平，对于全范围的输入功率比，可以精确选择哪个相位延迟。尽管可以利用耦合器的-3dB的标称耦合值，但是本发明不一定限于该值。

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