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Time‐domain simulation of dispersive media with the finite integration technique
Author(s) -
Gutschling S.,
Krüger H.,
Weiland T.
Publication year - 2000
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/1099-1204(200007/08)13:4<329::aid-jnm383>3.0.co;2-c
Subject(s) - finite difference time domain method , broadband , stability (learning theory) , computer science , set (abstract data type) , frequency domain , domain (mathematical analysis) , transmission line , foundation (evidence) , algorithm , electronic engineering , calculus (dental) , mathematics , telecommunications , mathematical analysis , engineering , optics , physics , medicine , archaeology , dentistry , machine learning , computer vision , history , programming language
Since simulations of broadband applications have gained in importance in the last few years, the dispersive characteristics of various materials must not be neglected anymore. As a result many frequency‐dependent FDTD methods have been set up which in most cases model special dispersions of low order. Furthermore, only few authors present proposals for the examination of stability behaviour of their algorithms. Our approach refers to the general FIT method and is based on state‐space formulation. On foundation of discrete system analysis we present an algorithm applicable to arbitrary material dispersions and a detailed description of a practicable stability derivation. The applicability of the presented method is demonstrated with an example using a parallel plate transmission line filled with dielectric layers. Copyright © 2000 John Wiley & Sons, Ltd.