Analysis of Waveguide Discontinuity Problems Using PML Substructure Method

YANG Hong-wei; MU Zhen-feng; JIANG Shu-ning; WANG Zhen

doi:10.3969/j.issn.0372-2112.2013.03.020

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Analysis of Waveguide Discontinuity Problems Using PML Substructure Method

更新时间：2025-07-16

- Analysis of Waveguide Discontinuity Problems Using PML Substructure Method
- Acta Electronica Sinica Vol. 41, Issue 3, Pages: 539-542(2013)
- 作者机构：
  
  北京工业大学应用数理学院,北京,100124
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.11172008, No.10972013)
- DOI：10.3969/j.issn.0372-2112.2013.03.020
  CLC： O441.4
- Published：2013
- 稿件说明：
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YANG Hong-wei, MU Zhen-feng, JIANG Shu-ning, et al. Analysis of Waveguide Discontinuity Problems Using PML Substructure Method[J]. Acta Electronica Sinica, 2013, 41(3): 539-542.
DOI：

YANG Hong-wei, MU Zhen-feng, JIANG Shu-ning, et al. Analysis of Waveguide Discontinuity Problems Using PML Substructure Method[J]. Acta Electronica Sinica, 2013, 41(3): 539-542. DOI： 10.3969/j.issn.0372-2112.2013.03.020.

摘要

按均匀性将波导沿纵向划分为不同子结构

视PML为其中一个子结构.采用有限元方法对波导各个子结构横截面进行离散

沿纵向运用精细积分算法求出各子结构的出口刚度阵

进而做子结构拼装以求解波导不连续性问题.算例的数值结果表明本文方法能够有效地分析波导不连续性问题

克服了人工边界距离波导不均匀部分必须足够远的缺点

可以求得距离波导不均匀部分较近区域处的场.

Abstract

The waveguide is decomposed into several substructures in the longitudinal direction

and PML absorbing boundary is treated as one of them.The transverse section of the substructures is discretized with the finite element method

a precise integration method based on the Riccati equations is used for the longitudinal integration to generate the export stiffness matrices

and then the waveguide discontinuity problems are expected to be solved through the combination of the substructures.Numerical examples demonstrate that

the waveguide discontinuity problems can be effectively solved with this method

the disadvantage that the artificial boundary must be far away from the non-uniform region can be overcome

and the field near the non-uniform region can be worked out.

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