Adaptive polarization combining system

Details Adaptive polarization combining system Adaptive polarization combining system

H - Electricity

01

P

333/20

H01P 1/165 (2006.01) H01Q 3/26 (2006.01) H01Q 21/24 (2006.01)

Patent

CA 2021905

ADAPTIVE POLARIZATION COMBINING SYSTEM ABSTRACT OF THE DISCLOSURE An adaptive polarization combining system (100) automatically adjusts the polarization of a polarization diverse antenna (101) to match that of the incoming RF signal, thereby maximizing the received signal-to noise ratio. Signals from the orthogonally polarized ports (A, B) of the antenna (101) are passed through a variable combiner circuit (50) which is adjusted to maximize the combined signal at a single output port (64). Sample signals (A', B' ) from each antenna port (A, B) are pro- vided to a calibration circuit (150) which contains phase and amplitude information from the two orthogonally polarized received signals and uses this information to control the combiner circuit phase shifters (52, 54, 58, 60) to adapt the combiner circuit (50) to the polarization of the received signals. Therefore, the combining system (100) can rapidly adapt electronically to polarization changes in the received signals.

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