Title :
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
fDate :
6/1/2000 12:00:00 AM
Abstract :
This paper proposes a rigorous method for determining the effective radius, reff, of a single axial field component, E x or Hx, in a two-dimensional (2-D) TMx or TEx 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
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;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
