圆柱分层媒质ρ向格林函数的有效计算  

Efficient Calculation of ρ-Oriented Green' s Function for Cylindrically Stratified Media

作　　者：刘海义[1] 尹成友[1] 于涛[1] 

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

出　　处：《微波学报》2011年第6期25-31,共7页Journal of Microwaves

摘　　要：针对圆柱分层媒质ρ向格林函数的计算问题,提出了一种有效的计算方法。给出了谱域并矢格林函数的具体表达式,利用广义函数束法(GPOF)将谱域格林函数转化成闭合形式的空域格林函数,尤其是在文献[4-5]基础上对GPOF法中的积分路径进行了改进,有效解决了采样参数设定难、稳定性差的缺点,实现了快速计算的目的。利用二次包络提取法解决了探针与贴片连接处格林函数奇异性和慢收敛性的问题。通过仿真计算验证了本文方法的有效性,从而为利用矩量法求解探针馈电圆柱共形微带天线奠定了基础。An efficient calculation method of ρ-oriented Green' s function for cylindrically stratified media is proposed in this paper.Firstly,the spectral Green' s functions in cylindrically stratified media are listed,and then by means of generalized pencil of function(GPOF),the spectral Green' s function is successfully translated into the closed-form spatial Green' s function,particularly,the integral path in GPOF is modified based on the reference,so it effectively overcomes the drawbacks of the traditional methods,such as the difficulty of selecting parameters and bad stability,and realizes the purpose of fast calculation.In addition,to resolve the singularity and slow convergence of Green' s function in the attachment point between the probe and the patch,two-step envelope extraction method is proposed.The calculated results show the effectiveness of the proposed method,so it provides theoretic bases for analysis of probe-fed cylindrically conformal microstrip antenna by method of moments(MOM).

关 键 词：探针馈电 圆柱分层媒质 格林函数 闭合形式 广义函数束 二次包络提取 

分 类 号：TN822[电子电信—信息与通信工程]