NDLI: A High-Order Compact-FDTD Algorithm for Electrically Large Waveguide Analysis

Content Provider	IEEE Xplore Digital Library
Author	Hadi, M.F. Mahmoud, S.F.
Copyright Year	1963
Abstract	To model electrically large waveguiding structures, the compact-finite-difference time-domain (FDTD) algorithm needs to use severely scaled down time steps to properly contain the rapidly growing numerical dispersion errors with increased operating frequency. In this work, a high-order compact-FDTD algorithm based on fourth-order spatial central finite differencing and fourth-order temporal backward finite differencing is developed. The accuracy and efficiency of this proposed algorithm are verified through its dispersion relation analysis and validated by modeling high-frequency wave propagation through an earth tunnel. The obtained computational efficiency allows this high-order algorithm to model wireless propagation through longitudinally-invariant road and railway tunnels using several hundred compact-FDTD cells as opposed to the several million FDTD cells required by three-dimensional FDTD algorithms.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	2589
Ending Page	2598
Page Count	10
File Size	713751
File Format	PDF
ISSN	0018926X
Volume Number	56
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Finite difference methods Time domain analysis Frequency Dispersion Earth Roads Rail transportation Equations Dielectrics numerical dispersion Compact finite-difference time-domain (FDTD) method earth tunnels electrically large waveguides high-order finite-difference time-domain (FDTD) methods
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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