The determination of the effective radius of a filamentary source in the FDTD mesh

Author

Waldschmidt, G. ; Taflove, A.

Author_Institution

Dept. of Electr. & Comput. Eng., Northwestern Univ., Evanston, IL, USA

Volume

10

Issue

6

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

217

Lastpage

219

Abstract

This paper proposes a rigorous method for determining the effective radius, r_eff, of a single axial field component, E _x or H_x, in a two-dimensional (2-D) TM_x or TE_x 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 r_eff≈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

Keywords

Green´s function methods; electromagnetic fields; electromagnetic wave propagation; finite difference time-domain analysis; frequency-domain analysis; FDTD mesh; Yee algorithm; analytical Green´s function; coarse grid resolutions; effective radius; filamentary source; grid resolutions; rigorous method; single axial field component; Equations; Finite difference methods; Frequency domain analysis; Impedance; Solid modeling; Tellurium; Testing; Time domain analysis; Two dimensional displays; Wire;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.852420

Filename

852420