同轴线馈电的球面共形微带天线的数值分析  

Numerical analysis of spherical conformal microstrip antenna fed by coaxial line

作　　者：于涛[1] 尹成友[1] 刘汉[1] 

机构地区：[1]电子工程学院脉冲功率激光国家重点实验室,安徽合肥230037

出　　处：《系统工程与电子技术》2015年第11期2432-2437,共6页Systems Engineering and Electronics

基　　金：总装备部预研基金资助课题

摘　　要：采用基于矩量法(method of moments,MoM)的面-线积分方程法分析了同轴线馈电的球面共形微带天线的输入阻抗。面-线积分法在分析过程中具有未知量少,计算时间短的优势。天线贴片电流和探针电流分别采用Rao-Wilton-Glisson(RWG)基函数与三角基函数来模拟。在线面连接处,提出一种新型的连接基函数以保证探针与贴片的电流连续性。激励源采用磁流环模型,并且结合球表面磁并矢格林函数求解激励源在天线表面产生的场。最后,通过实例验证了连接基函数的可行性,并分析了两副球面共形微带天线的输入阻抗,证明所提分析处理的正确性。The input impedance of spherical conformal microstrip antennas fed by the coaxial line is analyzed using the surface-wire integral equation method based on method of moments （MoM）. The surface-wire integral equation method has advantages of few unknowns and short calculation time in the analysis process. The equiva lent currents on the antenna patch and probe are simulated by the Rao-Wilton-Glisson （RWG） basis function and the triangle basis function respectively. A novel iunction basis function is proposed at the junction to keep the current continuity from patch to probe. The field on the surface of the antenna produced by magnetic frill source is calculated based on the magnetic dyadic Green＇s functions. Finally, the junction basis function is validated in terms of feasibility, and the input impedance of spherical conformal microstrip antennas are analyzed based on two examples. Calculated results show the validity of the proposed method.

关 键 词：球面共形微带天线 面-线积分方程 连接基函数 同轴线激励 数值分析 

分 类 号：TN520[电子电信]