波導(dǎo)混合模問題的修正邊界元法分析
ANALYSIS OF HYBRID MODES OF WAVEGUIDE BY A MODIFIED BOUNDARY ELEMENT METHOD
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摘要: 本文建立了分析波導(dǎo)混合模問題的修正邊界元模型;導(dǎo)出了關(guān)于混合模的耦合邊界積分方程組及其退化形式,并用矩量法將之離散為齊次代數(shù)方程組,從而得波導(dǎo)的混合模傳輸常數(shù);最后以部分介質(zhì)填充波導(dǎo)為例進行了計算,所得結(jié)果與橫向諧振法結(jié)果吻合得很好。
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關(guān)鍵詞:
- 波導(dǎo); 混合模; 傳輸線; 邊界元法; 色散特性
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. -
洪偉,李嗣范,修正邊界元法及其在電磁場邊值問題中的應(yīng)用,電子學(xué)報,1987年,第6期,第49-54頁.[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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