Compact antenna feed assembly and support arm with integrated waveguide
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United States of America Patent
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Feb 28, 2012
Grant Date -
May 20, 2010
app pub date -
Nov 14, 2008
filing date -
Nov 14, 2008
priority date (Note) -
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Abstract
A feed assembly and feed support arm for parabolic antennas with circular or linear polarization is provided in a streamlined configuration. The feed assembly contains a septum polarizer with parallel transmit and receive ports, or a similarly configured ortho-mode transducer. Through a common waveguide transition, the ports connect to transmit and receive filters joined together in parallel to form a square-profile structure that serves as the feed support arm. The receive filter terminates in a low noise block downconverter while the transmit filter connects to a waveguide flange at the base of the reflector, which is the output port of an up-converter/power amplifier mounted behind the reflector. Alternatively, the power amplifier is integrated into the feed support arm, connecting to the rest of the transmitter behind the reflector.
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