The treatment of thin wires in the FDTD method using a weighted residuals approach

CJ Railton, BP Koh, IJ Craddock

Research output: Contribution to journalArticle (Academic Journal)peer-review

11 Citations (Scopus)
577 Downloads (Pure)


In this contribution, the problem of accurately representing thin wires within the finite-difference time-domain (FDTD) mesh is addressed by means of a method based on the weighted residual (WR) interpretation of the FDTD algorithm. Results for wire dipoles and wire transmission lines, obtained using the proposed method, are presented and compared to those obtained using existing techniques. It is shown that the proposed method yields results which are more accurate and are less dependent on the choice of cell size than other approaches and, in addition, lends itself well to being extended for more complicated structures. Details of the calculation of the update equations are given.
Translated title of the contributionThe treatment of thin wires in the FDTD method using a weighted residuals approach
Original languageEnglish
Article numberissue 11
Pages (from-to)2941 - 2949
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Issue number11
Publication statusPublished - Nov 2004

Bibliographical note

Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Rose publication type: Journal article

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  • dipole antennas
  • finite-difference time-domain (FDTD) methods
  • wire antennas


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