A method for incorporating different sized cells into the finite-difference time-domain analysis technique

Author

Prescott, Deane T. ; Shuley, N.V.

Author_Institution

Dept. of Electr. Eng., Queensland Univ., Brisbane, Qld., Australia

Volume

2

Issue

11

fYear

1992

Firstpage

434

Lastpage

436

Abstract

A method is presented that simplifies the process of incorporating a refined mesh around a discontinuity in a finite-difference time-domain (FD-TD) algorithm. The technique is used to calculate the tangential electric fields on the boundaries between different sized cells in a variable step size mesh environment. A waveguide is modeled in two dimensions and the accuracy of the mesh refinement algorithm is tested by measuring the amount of field reflected during the transition from a coarse mesh to a fine mesh. The amount of error is found to be less than 1%.<>

Keywords

finite difference time-domain analysis; waveguide theory; FDTD algorithm; different sized cells; discontinuity; finite-difference time-domain analysis; mesh refinement algorithm; refined mesh; tangential electric fields; variable step size mesh environment; waveguide; Australia; Difference equations; Electromagnetic measurements; Electromagnetic modeling; Electromagnetic scattering; Electromagnetic waveguides; Finite difference methods; Testing; Time domain analysis; Waveguide transitions;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.165634

Filename

165634