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This paper presents new results showing the application of polyomino-based subarrays to limited field of view and wideband, wide-angle scanning. This technology can reduce the number of phase controls in arrays used for limited sector coverage or the number of time delay devices for wideband radar or communications, and so can reduce the cost of space-based active arrays. We concentrate on the wideband application. Results are presented by comparing the gain and peak sidelobe results of irregular polyomino subarray-based arrays with those of rectangular subarrays. It is shown that using irregular polyomino subarrays can result in a major decrease in sidelobes while presenting, in most cases, only a few tenths of a dB gain reduction compared to rectangular subarrays. [ABSTRACT FROM AUTHOR]

Irregular polyomino-shaped subarrays are shown to provide a practical and effective means for introducing time delay into an array with phase steering. The elimination of quantisation lobes, with resulting peak sidelobes suppressed more than 14 dB below the quantisation lobes of an array of rectangular subarrays, is demonstrated. [ABSTRACT FROM AUTHOR]