互耦效应对不同阵列流型相关性的影响  

Effect of mutual coupling on spatial correlation for different manifold arrays

作　　者：杨颖[1] 李伟东 薛翠薇 朱秋明[1,3] 廖志忠[3] 陈小敏[1] YANG Ying;LI Weidong;XUE Cuiwei;ZHU Qiuming;LIAO Zhizhong;CHEN Xiaomin(Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;ZTE Corporation, Shenzhen 518057, China;China Airborne Missile Academy, Luoyang 471009, China)

机构地区：[1]南京航空航天大学,江苏南京210016 [2]中兴通讯股份有限公司,广东深圳518057 [3]中国空空导弹研究院,河南洛阳471009

出　　处：《电信科学》2018年第5期81-89,共9页Telecommunications Science

基　　金：国家重大科学仪器设备开发专项基金资助项目(No.2013YQ200607);中国博士后科学基金资助项目(No.2013M541661);中央高校基本科研业务费青年科技创新基金资助项目(No.NS2015046;No.NS2016044);江苏省物联网与控制技术重点实验室基金资助项目(No.NJ20160027);南京航空航天大学研究生创新基地(实验室)开放基金资助项目(No.kfjj20170405)~~

摘　　要：分析了互耦机理及其对接收信号矢量的影响,详细推导了入射信号角度谱服从Von Mises分布时,任意数目线型、圆型及面型等不同流型阵列的天线空间相关系数的闭式表达式和近似表达式,并据此推导出了综合互耦因素的对应流型阵列天线的相关系数解析式。仿真结果表明:本文推导的天线空间相关系数表达式与数值积分结果非常吻合。另外,在互耦效应下,天线阵元相关性围绕着无互耦时的相关性曲线上下波动,且面型阵列具有更好的抗互耦能力。The mechanism of MC and its impact on the received signal vector were analyzed. A closed-form expression and an approximate expression of SC for antenna arrays with different forms were derived, where the power angle spectrum of arrival signal was modeled as Von Mises（VM） distribution. On this basis, the general expressions of SC with MC effect was derived. Simulation results show that the proposed analytical expressions are in good agreement with the numerical integration results. In addition, under the mutual coupling effect, the correlation of antenna array elements fluctuates around the correlation curve without mutual coupling, and the planar array has better resistance to mutual coupling.

关 键 词：多天线系统 阵列流型 空间相关系数 互耦效应 Von Mises分布 

分 类 号：TN926[电子电信—通信与信息系统]