Abstract
ABSTRACTAn optimization scheme for the design of a subarray configuration applicable to multifunction radars is presented in this article. For the efficient design of the subarray configuration, a genetical swarm optimization is combined with a K-means clustering scheme that partitions antenna elements into homogeneous groups. By utilizing the proposed optimization scheme, an array antenna that consists of 5,120 radiating elements is restructured to 32 subarrays. In addition, optimization of the subarray design was also conducted for two different design cases in which the numbers of elements in the subarrays are both unequal and equal. The subarrays are configured irregularly to avoid the creation of grating lobes in the radiation pattern. The peak sidelobe levels of digitally scanned beams are increased by 4.6 dB on average compared to those without scanning.
Published Version
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