期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 9, 期 -, 页码 67-69出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2010.2043410
关键词
Cole-Cole model; dispersive media; finite-difference time-domain (FDTD); Pade approximation
A finite-difference time-domain (FDTD) method for simulating wave propagation in Cole-Cole dispersive media with multiple relaxation times is presented. The main difficulty that the proposed method circumvents is the presence of fractional derivatives in the time-domain representation of the polarization relation. The latter is approximated by a set of auxiliary differential equations using Pade approximants, where each approximant corresponds to a single relaxation time of the Cole-Cole model. The auxiliary differential equations are discretized by means of central differences and are further employed within a conventional FDTD scheme. The efficiency of the proposed method is demonstrated by simulating the propagation of a wideband Gaussian pulse that excites a one-dimensional Cole-Cole medium with two relaxation times.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据