NDLI: Narrow strip above ground plane transmission line formulation in the FDTD algorithm

Content Provider	IEEE Xplore Digital Library
Author	Koh, B.P. Railton, C.J. Craddock, I.J.
Copyright Year	2002
Description	Author affiliation: Centre for Commun. Res., Bristol Univ., UK (Koh, B.P.; Railton, C.J.; Craddock, I.J.)
Abstract	A number of thin wire formalisms for use in the FDTD method have been published over the years. One such formalism was published by Holland and Simpson (IEEE Trans., EMC-23, no. 2, pp. 88-97, 1981). Later, Ledfelt (Ph.D. Dissertation, Royal Institute of Technology, Stockholm, 2001) enhanced the method in order to improve the accuracy for arbitrarily positioned wires by using a "shell average" in order to derive the average electric field around the wire. This approach was further developed by Edelvik (Tech. Report no. 2002-016, Uppsala University, Sweden, 2002), who introduced a newly defined basis function to represent the current density around the wire. Very recently Koh et al (IEE Proc. 2004) extended this approach to allow wire transmission line problems to be treated. In this paper the methods used in Koh et al are, for the first time, applied to the treatment of narrow strips with various terminations. It is shown that, with the correct choice of in-cell inductance and the appropriate use of tri-linear distribution and shell-average interpolation, accurate results can be obtained without the need for a fine FDTD mesh.
Sponsorship	Univ. of California, Lawrence Livermore Nat. Lab. Northrop Grumman NSF ITT Industries ANSOFT
Starting Page	81
Ending Page	84
File Size	163375
Page Count	4
File Format	PDF
ISBN	0780383028
DOI	10.1109/APS.2004.1329558
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Strips Transmission lines Finite difference methods Time domain analysis Wire Inductance Equations Impedance Testing Interpolation
Content Type	Text
Resource Type	Article

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