Analysis of Axially Symmetrical Coaxial Discontinuity Structures by Using Two-Dimensional Nonuniform Finite-Difference Frequency Domain Method

Author

Huang, Ruifeng ; Zhang, Daming ; Li, Lin

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

Volume

44

Issue

6

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1170

Lastpage

1173

Abstract

By combining the main features of the 2D finite-difference time domain (FDTD) method and the traditional finite-difference frequency domain (FDFD) method, a 2D FDFD method with nonuniform grids and perfectly matched layers (PML) is presented in this paper to analyze axially symmetrical coaxial discontinuity structures. Numerical results show that the 2D FDFD method is much more efficient than the commonly used 2D FDTD method in solving the frequency response of the structures. High accuracy of the 2D FDFD method is shown in a simple numerical example which can be solved by using the mode matching method.

Keywords

S-parameters; finite difference methods; frequency response; frequency-domain analysis; mode matching; waveguide discontinuities; 2D finite-difference time domain method; 2D nonuniform finite-difference frequency domain method; S-parameters; axially symmetrical coaxial discontinuity structures; frequency response; mode matching method; nonuniform grids; perfectly matched layers; Coaxial discontinuity structure; S parameters; finite-difference frequency domain (FDFD) method; finite-difference time domain (FDTD) method; mode matching method;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2008.916541

Filename

4526895