Skip to content

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationIEEE Antennas and Propagation Society International Symposium 2004, Monterey, USA
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages81 - 84
Number of pages4
ISBN (Print)0780383028
StatePublished - Jun 2004
EventIEEE Antennas and Propagation Society International Symposium - Monterey, United States


ConferenceIEEE Antennas and Propagation Society International Symposium
CountryUnited States
Period1/06/04 → …


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.

Additional information

Rose publication type: Conference contribution Terms of use: Copyright © 2004 IEEE. Reprinted from IEEE Antennas and Propagation Society International Symposium, 2004. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

    Research areas

  • finite difference time-domain analysis (FDTD), interpolation, transmission line theory


IEEE Antennas and Propagation Society International Symposium

Duration1 Jun 2004 → …
CountryUnited States

Event: Conference

Download statistics

No data available

View research connections

Related faculties, schools or groups