Patent ID: 8983420
Filing Date: 2015-03-17
Classification: G01S,H01Q

Abstract:
1. An antenna array system for reducing interference from a source moving relative to the antenna array system, the antenna array system comprising: a first beam-forming network; a second beam-forming network; a plurality of antenna array elements arranged in a planar array, each of the plurality of antenna array elements in electrical communication with the first and second beam forming networks and in a locationally fixed position relative to the first and second beam forming networks; the plurality of antenna array elements receiving a desired signal, and interference from the source moving relative to the antenna array system; the first beam-forming network configured to continuously rotate a first deep antenna-pattern null in azimuth while recording a received power level; the first beam-forming network further configured to determine a direction of the interference from the received power level; the second beam-forming network configured to lock a second deep antenna-pattern null toward the direction determined by the first beam-forming network; a third beam-forming network; and a fourth beam-forming network; wherein the second deep antenna-pattern null is generated from subtracting an antenna-pattern generated from the third beam-forming network from an antenna-pattern generated from the second beam-forming network, and adding an antenna-pattern generated from the fourth beam-forming network.