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A Prismatic Conformal Metasurface for Radar Cross-Section Reduction
IEEE Antennas and Wireless Propagation Letters ( IF 4.2 ) Pub Date : 2020-04-01 , DOI: 10.1109/lawp.2020.2974018
Yajin Wang , Jianxun Su , Zengrui Li , Qingxin Guo , Jiming Song

A prismatic conformal metasurface, based on optimized multielement phase cancellation, is proposed for wideband radar cross-sectional (RCS) reduction. The metasurface is composed of 35 lattices located in seven zones of a prismatic structure. The lattices in different zones are simulated under corresponding incident angles and taken into account the difference of wave path caused by the bending of the conformal structure. The interactions between multiple backscattered waves produced by the lattices are manipulated and optimized simultaneously by the hybrid array pattern synthesis and particle swarm optimization to achieve wideband destructive interference. The proposed metasurface can realize a 10 dB reduction in backscattered RCS under normal incidence for HH polarization from 9.6 to 10.6 GHz and 11.7 to 17.7 GHz with the fractional bandwidths of 9.9% and 40.8%, respectively. The theoretical analysis, simulated, and measured results are in a good agreement. The proposed approach verifies the innovation and effectiveness in achieving wideband RCS reduction for conformal metasurface.

中文翻译:

用于减少雷达截面的棱镜共形超表面

提出了一种基于优化的多元素相位抵消的棱柱形保形超表面,用于减少宽带雷达横截面 (RCS)。超表面由位于棱柱结构的七个区域中的 35 个晶格组成。不同区域的晶格在相应的入射角下进行模拟,并考虑了共形结构弯曲引起的波路差异。通过混合阵列模式合成和粒子群优化同时操纵和优化由晶格产生的多个反向散射波之间的相互作用,以实现宽带相消干涉。对于从 9.6 到 10.6 GHz 和 11.7 到 17 GHz 的 HH 极化,所提出的超表面可以在法向入射下使背向散射 RCS 降低 10 dB。7 GHz,分数带宽分别为 9.9% 和 40.8%。理论分析、模拟和实测结果吻合良好。所提出的方法验证了在实现共形超表面的宽带 RCS 减少方面的创新和有效性。
更新日期:2020-04-01
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