Array aperture design using irregular polyomino subarrays

This paper presents data and a procedure for the use of irregular subarrays in planar wideband arrays. Using element-level phase shifters and time delay at subarray ports, the procedure substitutes polyomino subarrays in place of conventional rectangular subarrays to eliminate quantization lobes. The paper focuses on the following details of the design: the choice of subarray size for specified bandwidth, the selection of subarray type, and the tradeoff between bandwidth and peak sidelobe level. These items of the design procedure are detailed for arrays with 4- and 8-element subarrays.