雙介質(zhì)加載波導截止頻率的邊界元解法
THE NUMERICAL SOLUTIONS OF CUT-OFF FREQUENCY IN TWO DIELECTRIC LAYERED WAVEGUIDES BY USING BOUNDARY ELEMENT METHOD
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摘要: 本文從二維亥姆霍茲方程的基本解出發(fā),討論了用邊界元法求解雙介質(zhì)加載金屬波導截止頻率的一般原理。利用本文給出的計算公式對兩個具體實例進行了計算。結(jié)果表明,該方法簡單實用,并具有較高的精度。
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關鍵詞:
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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