探针馈电的分层球状微带天线矩量法分析-应用科学学报.PDF

第 31 卷 第 5 期 应 用 科 学 学 报 Vol. 31 No. 5 2013年9月 JOURNAL OF APPLIED SCIENCES — Electronics and Information Engineering Sept. 2013 DOI: 10.3969/j.issn.0255-8297.2013.05.016 探针馈 电的分层球状微带天线矩量法分析 于 涛， 尹成友， 刘海义 电子工程学院 脉冲功率激光技术 国家重点实验室，合肥 230037 摘摘摘 要要要：：： 采用 以 Rao-Wilton-Glission(RWG)为基 函数 的矩量法推导 了分层球状微带天线 的阻抗矩 阵计算公式. 在计算探针和贴片连接处的阻抗矩 阵元素时，通过一种三角形对拆分方式简化 了矩 阵计算过程，并通过替代避免 线积分奇异 问题. 提取 了源 、场点位于 同一层媒质和不 同层媒质时并矢格林函数的渐进项，以加快格林函数无穷项 级数收敛速度. 计算 了一副球状微带天线，输入 阻抗计算结果与文献结果吻合 良好，说 明分析方法 的正确性和有 效性. 关键词：分层球状微带天线；阻抗矩阵；格林函数的渐进公式；RWG 基函数 中图分类号：TN122 文章编号：0255-8297(2013)05-0544-07 Analysis for Probe-Fed Microstrip Antennas in Multilayered Spherical Media Based on MoM YU Tao, YIN Cheng-you, LIU Hai-yi State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute, Hefei 230037, China Abstract: Formulas for calculating the impedance matrix of microstrip antenna in a multilayered spherical media using Rao-Wilton-Glission (RWG) basis functions based on MoM are derived. Division of pairs of triangles is adopted to calculate the elements of impedance matrix at the junction of the probe and patch. The complex line integral singularity can be avoided by substitution. Asymptotic items of the dyadic Green’s functions of the source and field points located on the same and different layers are extracted to accelerate convergence of the infinite series. The characteristic of a microstrip antenna in a multilayered spherical media is calculated. The results of input impedance are in good agreement with the published data, showing validity of the analysis method. Keywords: m