FDTD FOR NTH-ORDER DISPERSIVE MEDIA

被引：265

作者：

LUEBBERS, RJ

HUNSBERGER, F

机构：

[1] Department of Electrical and Computer Engineering, Pennsylvania State University, University Park

[2] Department of Electrical and Computer Engineering, Pennsylvania State University, University Park

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1992年 / 40卷 / 11期

关键词：

D O I：

10.1109/8.202707

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：

Previously, a method for applying the finite-difference time domain (FDTD) method to dispersive media with complex permittivity described by a function with a single first-order pole was presented. This method involved the recursive evaluation of a discrete convolution, and was therefore relatively efficient. In this paper, the recursive convolution approach is extended to media with dispersions described by multiple second-order poles. The significant change from the first-order implementation is that the single backstore variable for each second-order pole is complex. The approach is demonstrated for a pulsed plane wave incident on a medium with a complex permittivity described by two second-order poles, and excellent agreement is obtained with the exact solution.

引用

页码：1297 / 1301

页数：5