双介质加载波导截止频率的边界元解法
THE NUMERICAL SOLUTIONS OF CUT-OFF FREQUENCY IN TWO DIELECTRIC LAYERED WAVEGUIDES BY USING BOUNDARY ELEMENT METHOD
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摘要: 本文从二维亥姆霍兹方程的基本解出发,讨论了用边界元法求解双介质加载金属波导截止频率的一般原理。利用本文给出的计算公式对两个具体实例进行了计算。结果表明,该方法简单实用,并具有较高的精度。
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Abstract: Based on the fundamental solution of a two dimensional Helmholtz equation, the general principle of determing the cut-off frequencies of waveguides filled with two dielectric layers by using the boundary element method is discussed. In terms of the formulae obtained, some numerical results are given for two commonly used configurations. The results show that the me-od is simple and practical, and iis precision is appreciable. -
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