The Determination of the Effective Radius of a Filamentary Source in the FDTD Mesh

G. Waldschmidt, Allen Taflove

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

This paper proposes a rigorous method for determining the effective radius, reff, of a single axial field component, Ez or Hz, in a two-dimensional (2-D) TMz or TEz FDTD grid, respectively. The method is based upon matching FDTD results for a filamentary field source with the analytical Green's function in two dimensions. We find that reff ≈ 0.2 grid cells over a wide range of grid resolutions. Further, our findings vividly demonstrate the nondissipative nature of the Yee algorithm even for very coarse grid resolutions.

Original languageEnglish (US)
Pages (from-to)217-219
Number of pages3
JournalIEEE Microwave and Guided Wave Letters
Volume10
Issue number6
DOIs
StatePublished - Jan 1 2000

Keywords

  • Effective radius
  • FDTD
  • filamentary source

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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