基于完美吸波超材料的缝隙天线设计

内容简介：摘要：为了改善波导缝隙天线的辐射和散射性能，设计了一种方形环结构的完美吸波超材料（Square Loop Perfect Absorbing Metamaterial，SLPAM），其厚度为0．0057X，最大吸波率达99．9％，并将此材料作为波导缝隙天线的基板，制备了完美吸波基板波导缝隙天线。仿真和实验结果表明：相比普通波导缝隙天线，优化设计的完美吸波基板波导缝隙天线的定向性得到了明显改善，同时其带内雷达散射截面（RCS）得到了有效减缩，最大减缩值达15．7dB。

Abstract：To improve the radiation and scattering performance of wavegnide slot antenna, a square loop perfect ab- sorbing metamaterial(SLPAM) whose thickness is only 0. 0057λ. but with maximum absorption of 99.9% is designed. A waveguide slot antenna with SLPAM is proposed. Simulated and measured results demonstrate that compared with the conven- tional antenna, the directivity of the novel antenna with perfect absorbing metamaterial is enhanced remarkably, simultane- ously, its in-band radar cross section(RCS) is reduced efficiently, and the largest reduction is up to 15.7dB.

作者：杨欢欢, 曹祥玉, 姚旭, 刘涛, 李文强, 郭威武,

关键词：完美吸波超材料, 波导缝隙天线, 定向性, 雷达散射截面,