Perfectly matched layer media with CFS for an unconditionally stable ADI-FDTD method

被引：116
|
作者：
Gedney, SD [1 ]
Liu, G
Roden, JA
Zhu, AM
机构：
[1] Univ Kentucky, Dept Elect Engn, Lexington, KY 40506 USA
[2] IBM Corp, Microelect Div, Res Triangle Pk, NC 27709 USA
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2001年 / 49卷 / 11期
基金：
美国国家科学基金会;
关键词：
alternating direction implicit (ADI) method; FDTD method; perfectly matched layer (PML);
D O I：
10.1109/8.964091
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 perfectly matched layer (PML) medium with complex frequency shifted constitutive parameters is introduced for the three-dimensional alternating direction implicit (ADI) formulation of the finite-difference time-domain (FDTD) method. The absorbing boundary is implemented using the convolutional PML (CPML) approach. It is demonstrated that the resulting ADI-CPML scheme is unconditionally stable. The effectiveness of the absorbing medium as a function of the time step is also demonstrated. The proposed method has the advantage that it allows the application of the ADI method to low-frequency analysis.
引用
收藏
页码：1554 / 1559
页数：6
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