舰载相控阵天线杂散发射辐射的统计电磁学分析  

Evaluation of Spurious Radiation Level from Shipboard Phased Array Antenna Using Statistical Eletromagnetics Method

作　　者：刘莹[1] 毛煜茹[2] 谢拥军[2] 

机构地区：[1]西安电子科技大学天线与微波重点实验室,西安710071 [2]北京航空航天大学电子信息工程学院,北京100087

出　　处：《微波学报》2016年第2期11-14,29,共5页Journal of Microwaves

基　　金：国家自然科学基金(61571022)

摘　　要：舰船上的有源相控阵天线各个单元收发组件的杂散发射及其辐射的电磁环境电平是典型的随机量,无法直接利用适合于确定性问题的计算电磁学方法进行求解。本文建立了舰船环境下相控阵天线的电磁仿真模型,应用电磁场全波分析结合蒙特卡洛方法的数值统计电磁学方法,分析了舰载相控阵天线杂散干扰的随机特性,给出了相控阵天线杂散发射辐射的环境电场值随着各个天线单元杂散发射随机特性变化的概率密度统计分布。该方法对于其他随机因素引发的相控阵天线指标的统计特性分析也具有参考意义。The spurious emissions from T/R modules of shipboard active phased array antenna and their radiation level are typical stochastic variables,which could not be got by computational electromagnetics method directly. Firstly the electromagnetic simulation model of phased array antenna on ship is established. Then the statistical characteristics of the spurious radiation level are evaluated by numerical statistical electromagnetics which using full wave analysis combined with Monte Caro method. The possibility density functions of radiation level varying with the spurious emissions from every TR module are given. The procedure presented in the paper also can be used to analyze the statistical characteristics of phased array antenna specifications.

关 键 词：统计电磁学 杂散发射 相控阵天线 概率密度函数 

分 类 号：TN821.8[电子电信—信息与通信工程]