摘要
本文提出了N阶色散媒质瞬态特性的时域分析方法,结合E变换对常规的时域有限差分(FDTD)法进行了修正,改进后的FDTD法能分析和处理与频率有关的电磁场问题,具有方法简洁、易实现等优点.为验证此方法的有效性和可靠性,对N阶色散媒质的反射系数进行了分析与计算,并与已知的解析结果进行了比较.同时,采用此时域方法对N阶色散媒质和导体覆盖N阶色散媒质的瞬时散射场进行了计算和分析.
The FDTD method modified by z-transform for the study of transient scattering of the Nth-order dispersive media is proposed in this paper. This method is concise and realizable. In order to verify the effectiveness of the approach, the reflection coefficient of the Nth-order dispersive media interface is calculated and compared with the known analytical results. The transient scattering fields of the Nth-order dispersive cylinder and the Nth-order dispersive cylinder coated with conductor are calculated and analysed also.
出处
《微波学报》
CSCD
北大核心
1996年第1期9-14,共6页
Journal of Microwaves
基金
上海市教育委员会
上海市自然科学基金资助
关键词
色散媒质
瞬态散射特性
电磁波
散射
Nth-order dispersive media, Transient scattering, FDTD (finite-difference in time-domain), z-transform
