FDTD Method for Dispersive Medium Characterized by Rational Function

Takuji ARIMA  Toru UNO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E81-C   No.12   pp.1898-1901
Publication Date: 1998/12/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Issue on Computational Electromagnetics)
Category: 
Keyword: 
FDTD,  RC,  PLRC,  

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Summary: 
Recursive convolution (RC) approach and later piecewise linear recursive convolution (PLRC) approach which greatly improves the accuracy of the original RC approach, have been proposed for analyzing the electromagnetic propagation through linear dispersive materials using the finite difference time domain (FDTD) method. However, these methods can not be applied directly when the dispersion function has multi-order poles. In this paper the PLRC approach are extended to a rational function having the poles of multi-order.