Compact low sidelobe antenna and feed network
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United States of America Patent
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Jan 26, 2016
Grant Date -
Sep 4, 2014
app pub date -
Feb 28, 2014
filing date -
Mar 1, 2013
priority date (Note) -
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Abstract
An antenna may include a primary reflector having a ring focus; a feed body along an axis of the primary reflector, the feed body including a circular waveguide coaxial with the axis of the primary reflector; a sub-reflector disposed facing an end of the circular waveguide; and a generally cylindrical stem extending from a center of the sub-reflector into the circular waveguide to form a section of annular waveguide. A sub-reflector support may mechanically connect a perimeter of the sub-reflector and an outside surface of the feed body. The sub-reflector, the stem, and the feed body may be collectively configured to couple microwave energy between the annular waveguide and the primary reflector.
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