Method and apparatus for optimizing feedhorn performance
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United States of America Patent
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Mar 25, 1986
Grant Date -
N/A
app pub date -
Jun 21, 1983
filing date -
Jun 21, 1983
priority date (Note) -
Expired
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Abstract
An optimized feedhorn comprising a circular waveguide having a corrugated plate disposed around the outside of the aperture of the waveguide wherein the corrugations of the plate are capacitive as to E plane signals. The feedhorn includes a reduced aperture diameter which selectively protrudes beyond the plane of the corrugated plate. The amount of protrusion of the aperture is determined to approximately equalize E and H plane beamwidths and selectively shape the top and skirts of the signal pattern around the center frequency of interest.
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