Fast modal ABC's in the hybrid PEE-FDTD analysis of waveguide discontinuities

被引：5
|
作者：
Kreczkowski, A
Rutkowski, T
Mrozowski, M
机构：
[1] Telecommun Res Inst, Gdansk Div, PL-80404 Gdansk, Poland
[2] Gdansk Tech Univ, Dept Elect Telecommun & Informat, PL-80952 Gdansk, Poland
来源：
IEEE MICROWAVE AND GUIDED WAVE LETTERS | 1999年 / 9卷 / 05期
关键词：
absorbing boundary conditions; eigenfunction expansion; finite-difference time-domain; waveguides;
D O I：
10.1109/75.766759
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：
This letter discusses the application of two types of fast modal absorbing boundary conditions (ABC's) to the analysis of waveguide discontinuities by means of the hybrid partial eigenfunction expansion finite-difference time-domain (PEE-FDTD) method. For low-order modes, ARX digital filters are used while higher order modes are terminated with simplified ABC's based on the evanescent nature of modes below cutoff. Numerical tests show that this approach gives a very good absorption of modes while allowing one to achieve significant acceleration of numerical computation compared to classical FDTD scheme.
引用
收藏
页码：186 / 188
页数：3
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