An efficient full-wave analysis, based on the method of lines, is performed on waveguides with multidiscontinuities. Three-dimensional hybrid mode analysis is used. The spectrum of the reflection coefficient for a periodic structure is provided as an example and is in good agreement with published results. Compared to other methods, the algorithm is stable in numerical computation for a large number of discontinuities.
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Yang et al. (1995) studied this question.
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