基于四元数超表面的宽带雷达散射截面缩减

Broadband RCS Reduction by a Quaternionic Metasurface.

作者信息

Zhang Zhao, Zhang Yazhong, Wu Tianlong, Chen Shaowen, Li Wei, Guan Jianguo

机构信息

The First Aircraft Institute of AVIC, Xi'an 710089, China.

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China.

出版信息

Materials (Basel). 2021 May 24;14(11):2787. doi: 10.3390/ma14112787.

DOI:10.3390/ma14112787

PMID:34073921

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8197333/

Abstract

A quaternionic metasurface consisting of two pairs of units with destructive phase difference is proposed to extend the bandwidth of radar cross section (RCS) reduction. The two pairs of units are designed to have complementary phase-different bandwidth, which extends the bandwidth of RCS reduction. The overlaps of their bandwidth enhance the RCS reduction, resulting in a metasurface having broadband and strong RCS reduction. This design and the wideband RCS reduction of the quaternionic metasurface were verified by analytical calculation with superposition principle of electric field, numerical simulation with commercial software package CST Microwave Studio and experiment in microwave anechoic chamber. The scattering mechanism and the angular performance of the quaternionic metasurface were also investigated.

摘要

提出了一种由两对具有相消相位差的单元组成的四元数超表面，以扩展雷达散射截面（RCS）缩减带宽。这两对单元被设计为具有互补的相差带宽，从而扩展了RCS缩减带宽。它们带宽的重叠增强了RCS缩减效果，从而得到一种具有宽带且强RCS缩减能力的超表面。通过基于电场叠加原理的解析计算、使用商业软件包CST微波工作室进行的数值模拟以及在微波暗室中的实验，验证了这种设计以及四元数超表面的宽带RCS缩减性能。还研究了四元数超表面的散射机制和角度性能。