Patent ID: 6336033
Filing Date: 2002-01-01
Classification: H01Q

Abstract:
An adaptive array antenna comprising:a plurality of subarrays of antenna elements arranged in groups of at least two, said antenna elements each outputting a high-frequency received signal; a high-frequency distributor for distributing each of the received signals from said antenna elements to a plurality of channels; each of said plurality of channels including: a plurality of high-frequency level-phase regulators for regulating the levels and phases of said high-frequency received signals distributed by said high-frequency distributor from said at least two antenna elements of each of said plurality of subarrays, thereby setting the directivity of said each subarray; a high-frequency signal combiner for combining the regulated high-frequency received signals from said plurality of high-frequency level-phase regulators corresponding to said each subarray and for outputting the combined high-frequency signal; a receiver for converting said combined high-frequency signal from said high-frequency signal combiner corresponding to said each subarray to a baseband signal and for outputting said baseband signal; a baseband level-phase regulator for adaptively regulating the level and phase of said baseband signal from said receiver corresponding to said each subarray; a baseband signal combiner for combining the regulated baseband signals from said baseband level-phase regulators corresponding to said plurality of subarrays, respectively, and for outputting the combined baseband signal; and an adaptive signal processing part whereby said baseband level-phase regulators corresponding to said plurality of subarrays, respectively, are adaptively controlled based on said combined baseband signal from said baseband signal combiner to set the combined directivity of all the antenna elements in the direction of a desired signal.