Dual mode/dual band feed structures
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United States of America Patent
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Oct 31, 1995
Issued Date -
N/A
app pub date -
Oct 13, 1993
filing date -
Feb 6, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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