Patent ID: 9614280
Date: 2017-04-04
CPC Classifications: H01Q,H04B

Claim:
1. An optical feed network comprising: a polarization combiner configured to receive two optical signals and to provide a combined output; a splitter unit coupled to the polarization combiner to receive the combined output and configured to split the combined output into an integer number of channel signals; a plurality of electro-optical phase shifting elements configured to phase modulate the channel signals to produce phase-shifted signals; polarization controllers disposed prior to the plurality of electro-optical phase shifting elements and configured to control phases of the channel signals; a polarization control module configured to receive and process one or more signals associated with one or more outputs of the electro-optical phase-shifting elements and configured to provide electrical control signals to one or more of the polarization controllers; and a plurality of photo-detectors configured to obtain the one or more signals associated with the one or more outputs of the electro-optical phase shifting elements, wherein the one or more signals associated with the one or more outputs of the electro-optical phase shifting elements comprise direct-current (DC) signals detected by the plurality of photodetectors, and wherein the plurality of photodetectors are further configured to provide a plurality of radio frequency (RF) feed signals to an array of a respective plurality of antennas.