波导混合模问题的修正边界元法分析
ANALYSIS OF HYBRID MODES OF WAVEGUIDE BY A MODIFIED BOUNDARY ELEMENT METHOD
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摘要: 本文建立了分析波导混合模问题的修正边界元模型;导出了关于混合模的耦合边界积分方程组及其退化形式,并用矩量法将之离散为齐次代数方程组,从而得波导的混合模传输常数;最后以部分介质填充波导为例进行了计算,所得结果与横向谐振法结果吻合得很好。Abstract: A modified boundary element method for analysing hybrid modes of waveguide is presented. The coupled boundary integral equations and their reduced forms are deduced for hybrid mode problems, and these equations are discreted into a system of linear algebraic equations by moment method. Finally the dispersion characteristics of rectangular waveguide filled with two kinds of dielectrics are calculated and the numerical results are in good agreement with that obtained by transverse resonating method.
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洪伟,李嗣范,修正边界元法及其在电磁场边值问题中的应用,电子学报,1987年,第6期,第49-54页.[2]Hong Wei, Analysis of Waveguide DiScontinuities by A Modified Boundary Element Method. Proc. of ISAP, August, 1989, Japan, pp. 1037-1040.[3]Zhang Wenxun, Hong Wei, Yuan Jinyun, Computation of the Characteristic Impedances for the Irregular Transmission Lines by Using a Modified BEM, Proc. of OFSET, May 1987, Nanjing, china, pp. 415-420.[4]N. Marcuvitz, Waveguide Handbook, McGraw_Hill, N. Y., 1951. -
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