公开(公告)号：EP0627128A1

公开(公告)日：1994-12-07

申请号：EP93904937.0

申请日：1993-02-05

申请人： CALIFORNIA AMPLIFIER

发明人： WEST, Laurice, J. ,  GABRELIAN, Edward, E.

IPC分类号： H01P5 ,  H01Q5 ,  H01Q13

CPC分类号： H01Q13/025 ,  H01P5/103 ,  H01Q5/47

摘要： PCT No. PCT/US93/01054 Sec. 371 Date Oct. 13, 1993 Sec. 102(e) Date Oct. 13, 1993 PCT Filed Feb. 5, 1993 PCT Pub. No. WO93/16502 PCT Pub. Date Aug. 19, 1993.A feed structure (24) is disclosed for reception of orthogonal linearly polarized signals from communication satellites. The structure includes probes (34, 36) extended through the back wall (32) of a cavity (28) with associated transmission members (50, 52) and an associated isolation member (54). The teachings of the invention are extended to structures having the probes extended through the side wall (100) of a cavity. The teachings of the invention are further extended to dual band feed structures (124, 220 and 320). The structures are particularly suited to enhance high signal to noise ratios because of short path lengths to external receiver circuits and to enable realization in simple economical one piece castings.