金属包层平板介质波导的传输特性分析  

Analysis of Propagation Characteristics for Metal Clad Planar Waveguides

作　　者：王薇[1] 佘守宪[1] 王照明[1] 林铁生[1] 

机构地区：[1]北方交通大学理学院,北京100044

出　　处：《北方交通大学学报》2000年第2期93-96,共4页Journal of Northern Jiaotong University

摘　　要：将直接求得的复本征值方程的解与由微扰理论得到的一级和二级近似结果进行分析比较 ,结果表明微扰法是相当好的近似方法 ,它们给出了与精确值符合相当好的数值结果 .同时还表明微扰法的二级近似结果对一级近似结果的修正很小 。The comlex eigenvalue equation of a metal clad planar waveguide is solved exactly. The results of the first and the second order approximation obtained by the perturbation theory are compared with exact results. It is demonstrated that the perturbation method gives results in good agreement with those obtained by exact solution of complex eigenvalue equation. It is also demonstrated that the difference between results of the first and the second order approximation is quite small and usually the first order approximation gives sufficiently accurate results.

关 键 词：金属包层光波导 微扰理论 传输特性 介质波导 

分 类 号：TN814.5[电子电信—信息与通信工程] TN814.6