基于非平面编码扩散超表面的超宽带雷达散射截面缩减

Ultra-Wideband RCS Reduction Based on Non-Planar Coding Diffusive Metasurface.

作者信息

Wu Guozhang, Yu Wenqi, Lin Tao, Deng Yangyang, Liu Jianguo

机构信息

State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.

College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Materials (Basel). 2020 Oct 26;13(21):4773. doi: 10.3390/ma13214773.

DOI:10.3390/ma13214773

PMID:33114630

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7663463/

Abstract

A novel non-planar coding metasurface optimized by discrete particle swarm algorithm (DPSO) is proposed in terms of the property of wideband radar cross-section (RCS) and diffuse scattering. The design consists of two unit cells, "0" and "1", which have a 180° ± 37° phase difference for phase interference cancellation. The 10 dB monostatic RCS reduction frequency range of the metasurface is from 6.4 to 29.6 GHz, and its bandwidth ratio is 4.62:1, under normal incidence of the two polarizations. Compared to the planar surface, the non-planar surface has a greater bandwidth with respect to the monostatic and bistatic RCS reduction. The results declare its properties of ultra-wideband, angle insensitivity, and polarization insensitivity. Finally, the theoretical analysis, simulation, and experimental results match perfectly, indicating that the metasurface can be used in the RCS reduction or other microwave applications with wider RCS reduction and diffuse scattering.

摘要

基于宽带雷达散射截面（RCS）特性和漫散射特性，提出了一种采用离散粒子群算法（DPSO）优化的新型非平面编码超表面。该设计由两个单元“0”和“1”组成，它们具有180°±37°的相位差以实现相位干扰抵消。在两种极化的垂直入射情况下，该超表面的10 dB单站RCS缩减频率范围为6.4至29.6 GHz，带宽比为4.62:1。与平面表面相比，非平面表面在单站和双站RCS缩减方面具有更大的带宽。结果表明其具有超宽带、角度不敏感和极化不敏感的特性。最后，理论分析、仿真和实验结果完美匹配，表明该超表面可用于RCS缩减或其他具有更宽RCS缩减和漫散射的微波应用中。