一款基于极化转换超表面的双频RCS缩减Fabry-Perot天线  

A dual-band RCS reduction of Fabry-Perot antenna based on polarization conversion metasurface

作　　者：陈泓玮 曹群生[1] 王毅[1] CHEN Hongwei;CAO Qunsheng;WANG Yi(College ofEectronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Shanghai Electrical and Mechanical Engineering Institute,Shanghai 201108,China)

机构地区：[1]南京航空航天大学电子信息工程学院,南京210016 [2]上海机电工程研究所,上海201108

出　　处：《电波科学学报》2022年第2期288-295,313,共9页Chinese Journal of Radio Science

基　　金：国家自然科学基金面上项目(61871219)。

摘　　要：雷达散射截面(radar cross section,RCS)是雷达探测技术、隐身和反隐身技术中表征目标可识别特性的重要参数.对隐身平台RCS的贡献来自平台上的天线,因此降低天线系统的RCS成为目前隐身技术中的一个关键技术课题,当前的解决方案在降低RCS的同时会影响天线的辐射性能.本文将极化转换超表面(polarization conversion metasurfaces,PCM)和法布里-珀罗(Fabry-Perot)谐振腔天线有效结合,设计了一款双频带RCS缩减和增益提升天线.结果表明,该天线在4〜9 GHz和12〜15 GHz两个频段的RCS最大降低了15 dBsm.此外,Fabry-Perot天线的增益相较馈源天线提高了7 dBi.说明提出的天线具有增益高、RCS低的特点,可为Fabry-Perot谐振腔天线的设计提供新颖的思路.Radar cross section(RCS)is an important parameter of representing target recognition in radar detection technology,stealth and anti-stealth technology.As the antenna has a crucial impact on RCS,reducing the RCS of antenna system has become a key research subject in stealth technology,but the current scheme affect the radiation performance of the antenna while reducing the RCS.In this paper,a dual-band RCS reduction and gain enhancement antenna is designed by combining polarization conversion metasurfaces with Fabry-Perot resonator antenna.The simulation results show that the maximum RCS reduction of the antenna is 15 dBsm at 4-9 GHz and 12-15 GHz In addition,the gain of Fabry-Perot antenna is 7 dBi higher than that of feed antenna.The antenna has the characteristics of high gain and low RCS,which provides a novel way for the design of Fabry-Perot resonator antenna.

关 键 词：极化转换超表面(PCM) 棋盘式分布 相位相消 Fabry-Perot天线 RCS缩减 

分 类 号：TN82[电子电信—信息与通信工程]