基于RWG-MoM金属球表面天线的全波分析  

Full Wave Analysis for Antennas in the Presence of the Metal Sphere Based on RWG-MoM

作　　者：于涛[1] 尹成友[1] 刘海义[1] 

机构地区：[1]脉冲功率激光技术国家重点实验室解放军电子工程学院,合肥230037

出　　处：《微波学报》2012年第1期23-28,共6页Journal of Microwaves

摘　　要：提出了一种新的激励源模型,该模型成功克服了传统RWG函数不能在天线与球体连接处添加馈源的问题,同时,对格林函数进行加减自由空间格林函数的处理,解决当源点和场点接近于或位于球面时收敛慢的问题。通过计算位于球表面的单极子天线输入特性,并与相关文献结果进行了对比,结果表明分析方法的正确性和有效性。最后,分析了位于球表面的探针馈电贴片天线的特性,其分析结果与FEKO仿真结果一致性较好。A new excitation source model is proposed in this paper, which can successfully solve the problem that the feed source can＇ t be set at the junction between antennas and sphere. By adding and subtracting Green＇ s function in the infinite homogenous media the convergence speed of Green＇ s function is increased when the source point and the field point are close each other or lie on the surface of the metal sphere. The calculated result of the monopole in the presence of the metal sphere shows the validity and effectiveness of the analysis way. Finally, probe-fed patch antenna is calculated, the calculated result is in good agreement with the one simulated by FEKO.

关 键 词：RWG基函数 金属球 馈源 单极子天线 球并矢格林函数 

分 类 号：TN823.27[电子电信—信息与通信工程]