Patent ID: 9490862
Filing Date: 2016-11-08
CPC Classification: H01Q,H04B

Claim Text:
1. A band and polarization-selectable transceiver, comprising: RF equipment including upper and lower band transmitters and upper and lower band receivers configured to transmit and receive in upper and lower bands separated by a stop band; a first frequency duplexer having first and second ports coupled to the lower band transmitter and one of the upper band transmitter or the upper band receiver, respectively, and a third port; a second frequency duplexer having first and second ports coupled to the lower band receiver and the other one of the upper band transmitter and the upper band receiver, and a third port; a polarization duplexer having first and second ports coupled to the third ports of said first and second frequency duplexers, respectively, and a third port that supports first and second orthogonal polarizations, said polarization duplexer configured to combine or to separate the first and second orthogonal polarizations; a reflective antenna comprising a feed coupled to the third port of the polarization duplexer and a main reflector; a rotatable quarter-wave plate on either side of the feed; a drive mechanism configured to rotate the quarter-wave plate between +45° and −45° positions relative to the first and second orthogonal polarizations, wherein in said +45° position the polarizer converts said first and second orthogonal polarizations to third and fourth orthogonal polarizations, respectively, wherein in said −45° position the polarizer maps said first and second orthogonal polarizations to the fourth and the third orthogonal polarizations, respectively; and a controller configured to issue control signals to the drive mechanism to rotate the polarizer to one of the +45° and −45° positions to select one of the upper or lower bands as a transmission band with a selected third or fourth polarization and the other one of the upper and lower bands as a reception band with a selected third or fourth polarization.