脊波导族的多极理论分析  

Multipole Theory Analysis of a Ridged Waveguide Family

作　　者：郑勤红[1] 曾华[1] 解福瑶[1] 赵永达[1] 

机构地区：[1]云南师范大学物理与电子信息学院,昆明650092

出　　处：《微波学报》2001年第3期24-28,共5页Journal of Microwaves

基　　金：国家自然科学基金 (199610 0 4 );云南省自然科学基金;云南省中青年学术和技术带头人培养基金资助项目

摘　　要：本文提出用多极理论准解析法计算不满足多极理论展开条件的脊波导本征值问题 ,介绍计算二维 Helmholtz方程边值问题的多极理论准解析法计算规则。实例计算结果表明 :多极理论准解析法具有较高的计算精度 ,是计算复杂截面波导本征值问题的一种有效方法 。A novel quasi analytical method, the multipole theory (MT) method, is described for calculating 2D Helmholtz equation boundary value problems with the complicated field domain. The quasi analytical computational laws of the MT method are also introduced. By calculating the cutoff wavenumbers of a ridged waveguide family,it shows that the MT method is an effective approach for computation of the cutoff wavenumbers in waveguides of the complicated cross section, it is reliable and may be used to calculate engineering waveguide problems.

关 键 词：多极理论 准解析法 脊波导 截止波数 本征值问题 

分 类 号：TN252[电子电信—物理电子学]