Patent ID: 7317427

Claim:
An adaptive antenna array, comprising: a plurality of subarrays, each one of the plurality of subarrays comprised of elements, wherein the elements of the plurality of subarrays are arranged in element rows and element columns, wherein the plurality of subarrays are arranged in subarray rows and subarray columns, wherein at least one of: ones of the subarray rows have a different number of element rows than other ones of the subarray rows or ones of the subarray columns have a different number of element columns than other ones of the subarray columns, wherein each of the plurality of subarrays has a respective phase center forming a plurality of phase centers at different phase center positions substantially on a plane, wherein the different phase center positions are non-uniformly spaced from each other along at least one principal dimension in the plane, resulting in each phase center that has two adjacent phase centers along the at least one principal dimension being spaced by different amounts from the two adjacent phase centers.