空天预警研究学报2025，Vol.39Issue(4)：289-293,5.DOI:10.3969/j.issn.2097-180X.2025.04.012
基于极化不敏感超表面的低RCS宽带圆极化天线设计
Design of a low-RCS wideband circularly polarized antenna using polarization-insensitive metasurface
摘要
Abstract
In view of the current problems of microstrip patch antennas,such as narrow bandwidth,low gain and failure to consider scattering performance,a scattering-cancellation polarization-insensitive metasurface anten-na is proposed.By implementing a sequentially rotating arrangement of polarization-insensitive metasurface units around an offset-fed,conventional corner-truncated patch antenna,this design achieves broadband,wide-angle do-main radar cross section(RCS)reduction,as well as gain enhancement and circular polarization bandwidth expan-sion.Simulation results are demonstrated as follows:The peak gain of the metasurface antenna with the optimized layout is as high as 10.30 dB,and the 3 dB axial ratio(AR)bandwidths are 4.60-5.60 GHz and 5.81-6.00 GHz,re-spectively.Compared with the initial antenna,the peak gain and average gain are increased by 7.67 dB and 5.79 dB,re-spectively.Within the operational bandwidth,this antenna not only achieves wideband high-gain circularly polar-ized radiation characteristics,but also has an RCS as low as-23.02 dB.Meanwhile,the stability of the RCS reduc-tion amount remains good within an angular domain close to 20°.关键词
贴片天线/极化不敏感/极化转换超表面/雷达散射截面积Key words
patch antenna/polarization-insensitive/polarization conversion metasurface/radar cross section(RCS)分类
信息技术与安全科学引用本文复制引用
陈强,张迪,黄思宇,黄敏,卢念航..基于极化不敏感超表面的低RCS宽带圆极化天线设计[J].空天预警研究学报,2025,39(4):289-293,5.基金项目
湖北省自然科学基金青年项目(2023AFB452) （2023AFB452）
