Methods and systems for satellite communications employing ground-based beam forming with spatially distributed hybrid matrix amplifiers
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United States of America Patent
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Apr 21, 2015
Grant Date -
Dec 6, 2007
app pub date -
May 22, 2007
filing date -
May 30, 2006
priority date (Note) -
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Abstract
A satellite communications system includes a satellite configured to communicate with terminals, a station configured to communicate signals intended for the terminals to the satellite via a plurality of feeder links and a beamformer including an input multi-port hybrid matrix (MPHM) and a complementary output MPHM in a signal path with the plurality of feeder links. The output MPHM is positioned at the satellite and coupled to the input MPHM via the plurality of feeder links. For example, the input MPHM may be positioned at a ground-based satellite gateway. The input and output MPHMs may be configured to implement fully populated signal transformation matrices that collectively provide a substantially diagonal signal transformation matrix.
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