结构误差对阵列天线极化特性的影响分析  

Effect analysis of structural errors on the polarization characteristics of array antennas

作　　者：王猛[1] 王从思[1] 王伟[1] 

机构地区：[1]西安电子科技大学电子装备结构设计教育部重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2012年第11期2193-2197,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金(51035006;50805111);新世纪优秀人才支持计划(NCET-09-0633);中央高校基本科研业务费专项资金(K50510040001;K50510040008)资助课题

摘　　要：研究了阵列天线阵面变形导致的单元极化差异对天线辐射性能的影响。基于变形后单元的位置,通过3次坐标转换,建立了阵列天线全局球坐标系旋转变换到任意指向单元局部球坐标系的一般步骤,以得到单元在全局坐标系下的极化方向图,并在远场叠加的过程中考虑了单元位置误差的影响。通过对9×5元面阵的数值仿真,得到了可供工程参考的结论。The effect of element polarization difference of array antennas accounted for the plane distortion on its radiation performance is investigated. Based on the elements~ position in the case of distortion, a generic process of rotation transformation from the global spherical coordinates to the element local spherical coordinates is established by means of transforming the coordinates three times, thus getting the elements＇ polarization pattern in global coordinates. Antenna elements＇ position errors are also considered in the process of far-field calculation. Finally, some significative conclusions for engineering are obtained by the numerical simulated calcula tion of a 9×5 plane array.

关 键 词：阵列天线 阵面变形 极化 电性能 坐标转换 

分 类 号：TN820.15[电子电信—信息与通信工程]