摘要
RWG(Rao-Wilton-Glisson)三角基函数为基础的矩量法是分析偶极子天线阵列的有效方法。通过求解阻抗矩阵和矩量方程,可分析天线互耦特性。偶极子模型法是将包含2个三角的RWG边元的表面电流分布用具有等效偶极子矩量的无穷小偶极子代替来求解天线辐射场。运用偶极子模型法替代传统的电场积分法来求解阵列方向图,对考虑互耦偶极子阵列的方向图进行了仿真,并对比分析了和理想情况下的差异。同通常的电场积分方程法相比,此方法具有计算简便,物理意义明确,可分析任意形状的天线等特点。
Moment method based on RWG （Rao-Wilton-Glisson） triangular basis functions is an effective way to analyze the dipole arrays. This work analyzes the characteristics of mutual coupling by solving impedance matrix and momentum equations. The method of dipole model solves the antenna radiation by substituting infinitesimal dipole that has equivalent dipole moment for the surface current of RWG elements, which contain two triangles. In this paper, the pattern of array antenna is obtained by using the dipole model method in stead of using traditional integral of electric field. The dipole array is simulated with analyzing the difference between ideal and mutual coupling cases. Compareing normal electric field integral equation, this method has virtues of simple calculation, explicit physical signification, applicable to arbitrary antennas.
出处
《现代雷达》
CSCD
北大核心
2010年第6期73-76,共4页
Modern Radar
关键词
基函数
表面电流
偶极子模型
basis functions
surface current
dipole model
mutual coupling
