基于多模态超表面的无天线罩隐身阵列天线  

Radome-free stealth array antenna based on multimodal hypersurface

作　　者：黎亮 高红伟 张彬超 金城[2] LI Liang;GAO Hongwei;ZHANG Binchao;JIN Cheng(School of Integrated Circuits and Electronics,Beijing Institute of Technology,Beijing 100081,China;School of Cyberspace Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Department of Electronic Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京理工大学集成电路与电子学院,北京100081 [2]北京理工大学网络空间安全学院,北京100081 [3]清华大学电子工程系,北京100084

出　　处：《系统工程与电子技术》2025年第1期1-11,共11页Systems Engineering and Electronics

基　　金：国家自然科学基金(62271050)资助课题。

摘　　要：针对星载天线无法通过天线罩实现隐身的难题,提出星载无天线罩自隐身天线。通过多模谐振原理并利用差异化激励方法,构建具有单模态宽带隐身、双模态隐身-反射和双模态隐身-辐射特性的多模态电磁超表面,进而设计辐射-隐身一体化天线。实测结果表明,在3.05~4.95 GHz和6.4~10.5 GHz的带外吸收带,实现雷达散射截面(radar cross section,RCS)缩减;在5.7~6.15 GHz的频率区间内轴比低于3 dB,天线的增益为15.3 dBi,所设计的无天线罩一体化隐身圆极化阵列天线具有带外RCS缩减特性和良好的带内圆极化辐射性能。Aiming at the difficult problem that satellite-borne antennas cannot achieve stealth through radomes,this paper innovatively proposes a satellite-borne radome-free self-stealth antenna.By using the principle of multimode resonance and the differentiated excitation method,a multimodal electromagnetic hypersurface with single-modal broadband stealth,dual-modal stealth-reflection and dual-modal stealth-radiation characteristics is constructed,and then a radiation-stealth integrated antenna is designed.The measured results show that significant reduction in radar cross section(RCS)is achieved in the out-of-band absorption bands of 3.05-4.95 GHz and 6.4-10.5 GHz;within the frequency range of 5.7-6.15 GHz,the axial ratio is lower than 3 dB,and the gain of the antenna is 15.3 dBi.The designed radome-free integrated stealth circularly polarized array antenna has the characteristics of out-of-band RCS reduction characteristics and good in-band circularly polarized radiation performance.

关 键 词：星载 无天线罩 隐身 天线 电磁表面 

分 类 号：TN820[电子电信—信息与通信工程]