基于相位控制超构表面的OAM阵列天线RCS减缩研究  

An OAM Array Antenna Based on Phase Controlling Metasurface

作　　者：李思佳[1] 陈可可 高择朋 李金果 李卓越 韩博文 LI Sijia;CHEN Keke;GAO Zepeng;LI Jinguo;LI Zhuoyue;HAN Bowen(Information and Navigation School,Air Force Engineering University,Xi’an 710077,China;Unit 93154,Jiuquan 735305,Gansu,China;Unit 93107,Shenyang 110141,China)

机构地区：[1]空军工程大学信息与导航学院,西安710077 [2]93154部队,甘肃酒泉735305 [3]93107部队,沈阳110141

出　　处：《空军工程大学学报》2023年第3期2-9,共8页Journal of Air Force Engineering University

基　　金：国家自然科学基金(61701523,61801508)。

摘　　要：设计了一款基于相位控制超构表面的低雷达散射截面(RCS)轨道角动量(OAM)阵列天线,该天线由四元缝隙耦合微带天线组成,通过馈电网络为各单元馈送幅度值相等,相位值依次为0°、90°、180°、270°的激励,实现了1模态的OAM辐射效果。根据相位相消减缩RCS的原理,以2种人工磁导体单元为基础,构建了超构表面,以棋盘布阵的形式加载到阵列天线周围,实现了天线RCS的有效减缩。仿真结果表明:阵列天线的工作带宽为4.22~5.16 GHz,增益为8.91 dBi;阵列天线在5.3~7.0 GHz实现了8 dB的RCS减缩,在5.35~6.05 GHz实现了10 dB的RCS减缩。A low RCS(radar cross section)2×2 OAM(orbital angular momentum)array antenna is designed based on the phase controlling metasurface.The array antenna is composed of four aperture coupled micro-strip antennas,and a feeding network with same amplitude and the phase values of 0°,90°,180°,and 270°for different ports,realizing the OAM radiation effect of mode 1.According to the principle of phase cancellation to reduce RCS,a meta-surface is constructed based on two units of artificial magnetic conductor with around the array antenna being loaded in the form of a checkerboard array,realizing effective reduction of antenna RCS.The simulated results show that the operating bandwidth of the array antenna is from 4.22 GHz to 5.16 GHz,and the gain is 8.91 dBi.The array antenna achieves the reduction of 8 dB RCS from 5.3 GHz to 7.0 GHz,and the reduction of 10 dB RCS from 5.35 GHz to 6.05 GHz.

关 键 词：OAM 阵列天线 雷达散射截面 人工磁导体 超构表面 

分 类 号：TN82[电子电信—信息与通信工程]