天线罩加载问题的矩量法仿真与计算  

Analysis of Loaded Antenna Radome Structure by Using MOM

作　　者：段洪[1] 李建周[1] 许家栋[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《计算机仿真》2010年第12期27-30,73,共5页Computer Simulation

摘　　要：研究天线罩系统在各类飞行器上应用非常广泛。为了保护天线免受恶劣环境的损坏,克服天线辐射引起误差,根据RWG基矩量法(MOM),用计算机仿真分析了天线罩加载后整套天线系统的辐射性能。首先,从表面积分方程(SIE)出发,利用等效原理结合矩量法对目标进行了严格的理论建模,推导出适合编程求解的矩阵方程。通过数值仿真,证明了算法的有效性。最后分别分析了加载体、天线罩对天线辐射性能的影响,并计算了加载复杂模型时天线系统的辐射场分布。证明方法可以改善任意形状加载体对天线系统的辐射影响。There are many kinds of antenna radomes on aircraft.The radiation performance of antenna radome with loaded body is studied by using method of moment（MOM）.First,by employing the equivalence principle and surface integral equations,the exact model of the antenna radome with loaded body is established and the matrix equation suitable for programming is derived.The numerical results are presented to validate the effectiveness of the proposed method.Finally,the influence of loaded body and antenna radome on-the antenna system is analyzed respectively,and the radiation pattern of radome system is calculated in the presence of complex loaded model.The arithmetic can be applied for the radome system when loading arbitrary model.

关 键 词：矩量法 天线罩 等效原理 表面积分方程 

分 类 号：TN82[电子电信—信息与通信工程]