发明名称 Receiving head end for polarized microwaves, parabolic aerial and receiving station equipped with such a receiving head end
摘要 A receiving head end comprising only a single movable component, a front depolarizer (POM), for selecting conjugate polarized microwaves. The addition of a fixed depolarizer (POF) provides two aerial versions, one for the circular type of polarization and the other for the rectilinear type of polarization. The whole is fitted together for forming an aerial for the "public at large", simple to operate and whose shadow cast on the parabolic reflector is minimal.
申请公布号 US4806945(A) 申请公布日期 1989.02.21
申请号 US19870098354 申请日期 1987.09.18
申请人 U.S. PHILIPS CORP. 发明人 CORMIER, JEAN-PIERRE M.;HORVAT, PHILIPPE N.
分类号 H01P1/10;H01P1/165;H01P1/17;H01Q3/00;H01Q19/13;H04B1/18;(IPC1-7):H01Q19/00;H01Q19/12 主分类号 H01P1/10
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