An ADI-FDTD method for periodic structures

被引：30
|
作者：
Wang, SM [1 ]
Chen, J
Ruchhoeft, P
机构：
[1] Kelly Sci Inc, Bethesda, MD 20892 USA
[2] Univ Houston, Dept Elect & Comp Engn, Houston, TX 77204 USA
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2005年 / 53卷 / 07期
关键词：
alternating-direction implicit finite-difference time-domain; (ADI-FDTD) method; periodic structure;
D O I：
10.1109/TAP.2005.850763
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：
In this communication, the alternating-direction implicit finite-difference time-domain (ADI-FDTD) method is extended to analyze periodic structures. In the implicit updates of the ADI-FDTD method, the periodic boundary condition leads to a cyclic matrix. Instead of inverting the cyclic matrix directly, the problem is converted into two auxiliary linear systems that can be solved using the tridiagonal matrix solver. Consequently, only 7n arithmetic operations are required for each implicit update and the efficiency of the ADI-FDTD method is retained. Numerical examples further demonstrate the effectiveness of this periodic ADI-FDTD method.
引用
收藏
页码：2343 / 2346
页数：4
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