Application of the nonuniform FDTD technique to analysis of coaxial discontinuity structures

Author

Yu, Wenhua ; Mittra, Raj ; Dey, Supriyo

Author_Institution

Electromagn. Commun. Lab., Pennsylvania State Univ., University Park, PA, USA

Volume

49

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

207

Lastpage

209

Abstract

In this paper, we employ the nonuniform finite-difference time-domain (NUFDTD) technique to accurately model discontinues in complex coaxial configurations. We take advantage of the azimuthal symmetry of the structure to reduce the original problem into an equivalent two-dimensional one, and we do this by projecting the three-dimensional Yee cell onto two-dimensional planes. Numerical results are presented for various discontinuities to illustrate the application of the method. We show that the NUFDTD technique yields results that are in excellent agreement with the mode-matching method

Keywords

coaxial waveguides; finite difference time-domain analysis; waveguide components; waveguide discontinuities; waveguide theory; 3D Yee cell projection; azimuthal symmetry; coaxial discontinuity structures; complex coaxial configurations; equivalent 2D problem; nonuniform FDTD technique; nonuniform finite-difference time-domain technique; two-dimensional planes; Coaxial components; Computational geometry; Computational modeling; Equations; Finite difference methods; Finite element methods; Frequency; Mode matching methods; Solid modeling; Time domain analysis;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.900011

Filename

900011