非均勻填充波導(dǎo)截止頻率的網(wǎng)絡(luò)模型分解解法
A NETWORK MODEL DECOMPOSITION METHOD FOR THECALCULATION OF CUT-OFF FREQUENCIES OF ANARBITRARY SHAPED WAVEGUIDE WITHARBITRAY FILLING
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摘要: 本文給出一種求解非均勻填充波導(dǎo)截止頻率的新方法,稱為網(wǎng)絡(luò)模型分解法。文中首先利用區(qū)域剖分和電磁場的微分形式理論建立了該問題的拓撲填型及其相應(yīng)的網(wǎng)絡(luò)模型,然后利用電路理論中的網(wǎng)絡(luò)分解節(jié)點分析法建立了計算非均勻填充波導(dǎo)截止頻率的一般算法。最后將該算法應(yīng)用于若干典型實例,驗證了方法的可行性和有效性。Abstract: A new method, termed netwok model decomposition method, is presented for the evaluation of cut-off frequencies of an arbitrary shaped waveguide with arbitrary filling. Through discreting the region studied, a topological model and the corresponding network model are established based on the differential orms in electromagnetic field theory. A general algorithm for evaluating the cut-off frequenciess of an arbitrary shaped waveguide with arbitrary filling is constructed by using the diakopti node analysis in electrical network theory. The algorithm is applied to several typical waveguides with the validity and effectiveness of the method demonstrated.
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