Finite-difference time-domain algorithm for solving Maxwell´s equations in rotationally symmetric geometries

Author

Chen, Yinchao ; Mittra, Raj ; Harms, Paul

Author_Institution

Dept. of Electron. Eng., Hong Kong Polytech. Univ., Hong Kong

Volume

44

Issue

6

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

832

Lastpage

839

Abstract

In this paper, an efficient finite-difference time-domain algorithm (FDTD) is presented for solving Maxwell´s equations with rotationally symmetric geometries. The azimuthal symmetry enables us to employ a two-dimensional (2-D) difference lattice by projecting the three-dimensional (3-D) Yee-cell in cylindrical coordinates (r, φ, z) onto the r-z plane. Extensive numerical results have been derived for various cavity structures and these results have been compared with those available in the literature. Excellent agreement has been observed for all of the cases investigated

Keywords

Maxwell equations; cavity resonators; electromagnetic field theory; finite difference time-domain analysis; FDTD; Maxwell equations; azimuthal symmetry; cavity structures; coaxial cavity; cylindrical cavity; cylindrical coordinates; finite-difference time-domain algorithm; loaded cavities; numerical results; resonant properties; rotationally symmetric geometries; three-dimensional Yee-cell; two-dimensional difference lattice; Conductivity; Electromagnetic fields; Finite difference methods; Geometry; Helium; Lattices; Maxwell equations; Permittivity; Time domain analysis; Two dimensional displays;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.506441

Filename

506441