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首页> 外文期刊>IEEE Microwave and Guided Wave Letters >A boundary contour mode-matching method for the rigorous analysis of cascaded arbitrarily shaped H-plane discontinuities in rectangular waveguides
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A boundary contour mode-matching method for the rigorous analysis of cascaded arbitrarily shaped H-plane discontinuities in rectangular waveguides

机译：严格分析矩形波导中级联的任意形状H平面不连续性的边界轮廓模式匹配方法

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摘要

A rigorous boundary contour mode-matching (BCMM) method is presented for the efficient calculation of the modal scattering matrix of cascaded, arbitrarily shaped H-plane discontinuities, junctions and/or obstacles in rectangular waveguides. For the inhomogeneous waveguide region with general contour, the field is expanded in the complete set of cylindrical wave functions. The mode-matching technique is applied at the boundary to the waveguide ports and is shown to yield quick convergence and high numerical stability. Moreover, the modal scattering matrix of the corresponding region is obtained directly. The generalized modal scattering matrix technique achieves the rigorous and flexible modeling of composed H-plane waveguide structures of arbitrary cross-section, including the higher-order mode interactions at all discontinuities, such as of inductive iris coupled filters with resonators of more general shape. The theory is verified by comparison with results obtained by other methods.
机译：提出了一种严格的边界轮廓模式匹配（BCMM）方法，用于有效计算矩形波导中级联的任意形状的H平面不连续性，结和/或障碍物的模态散射矩阵。对于具有一般轮廓的不均匀波导区域，该场将在整套圆柱波函数中扩展。模式匹配技术在波导端口的边界处应用，并显示出快速收敛和较高的数值稳定性。此外，直接获得相应区域的模态散射矩阵。广义模态散射矩阵技术可对任意横截面的组合H平面波导结构进行严格而灵活的建模，包括在所有不连续处的高阶模相互作用，例如具有更一般形状的谐振器的感应虹膜耦合滤波器。通过与其他方法获得的结果进行比较，验证了该理论。

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