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1. 发明授权

US3883872A System for interference signal nulling by polarization adjustment 失效
标题翻译：通过极化调整的干扰信号归零系统
公开(公告)号：US3883872A
公开(公告)日：1975-05-13
申请号：US37442273
申请日：1973-06-28
申请人： NASA , OHLSON JOHN E , WILLIAMS WILLIAM F
发明人： FLETCHER JAMES C ADMINISTRATOR , OHLSON JOHN E , WILLIAMS WILLIAM F
IPC分类号： H04B7/00
CPC分类号： H04B7/002 , H04B7/00
摘要： A receiving system for automatically selecting a desired one of two approximately orthogonally polarized signals occupying the same bandwidth, is disclosed. Received signals are provided by any orthomode antenna system at a pair of output ports, i.e., right hand and left hand circular polarizations or two linear polarizations. The received signals are then applied to the inputs of a hybrid junction to produce sum and difference signals. The resulting sum signal at one output port comprises components of the undesired one of two orthogonally polarized signals and is used to coherently detect and dynamically balance out the undesired signal components that are included at the difference signal port. The desired one of two orthogonally polarized signals is thereby provided at the difference port of the hybrid junction. Feedback loops are used to effect dynamic balancing.
摘要翻译：公开了一种用于自动选择占据相同带宽的两个近似正交极化信号中期望的一个的接收系统。接收信号由任何正交模式天线系统在一对输出端口提供，即右手和左手圆极化或两个线性偏振。然后将接收到的信号施加到混合结的输入以产生和和差信号。在一个输出端口处的所得到的和信号包括两个正交极化信号中不期望的一个信号的分量，并且用于相干检测并动态平衡包含在差信号端口中的不需要的信号分量。因此，在混合结的差分端口处提供两个正交极化信号中期望的一个。反馈回路用于实现动态平衡。

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