A General Scheme for the Discontinuous Galerkin Time-Domain Modeling and S-Parameter Extraction of Inhomogeneous Waveports

被引：25

作者：

Chen, Geng ^{[1
]}

Zhao, Lei ^{[1
]}

Yu, Wenhua ^{[1
]}

Yan, Su ^{[2
]}

Zhang, Kedi ^{[2
]}

Jin, Jian-Ming ^{[2
]}

机构：

[1] Jiangsu Normal Univ, Sch Math & Stat, Ctr Computat Sci & Engn, Xuzhou 22116, Peoples R China

[2] Univ Illinois, Dept Elect & Comp Engn, Ctr Computat Electromagnet, Urbana, IL 61801 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2018年 / 66卷 / 04期

基金：

美国国家科学基金会;

关键词：

Discontinuous Galerkin time domain (DGTD); S-parameter extraction; total-field/scattered-field (TF/SF) decomposition; waveport modeling; FINITE-ELEMENT-METHOD; WAVE-GUIDE; MAXWELLS EQUATIONS; FIELD; IMPLEMENTATION; COMPUTATION; ALGORITHM; MODES;

D O I：

10.1109/TMTT.2017.2785800

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A general numerical scheme is proposed for the waveport modeling and scattering-parameter (S-parameter) extraction of inhomogeneous waveports with the discontinuous Galerkin time-domain method. In this scheme, the waveports are truncated with perfectly matched layers with a hybrid mesh automatically extruded from the mesh of the physical device to be simulated. The waveports are then excited by a total-field/scattered-field technique, with which the incident and scattered waves can be obtained for an accurate calculation of the S-parameters. A novel eigenmode solver is also developed to calculate the required modal profiles for the eigenmodes in both homogeneous and inhomogeneous waveports. Special attention is paid to the S-parameter extraction for evanescent modes, which has been a difficult task for time-domain simulations. Numerical examples are given to validate the proposed numerical scheme.

引用

页码：1701 / 1712

页数：12

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