Analysis of metallic waveguides with rectangular boundaries by using the finite-difference method and the simultaneous iteration with the Chebyshev acceleration

Author

Guan, Jenn-Ming ; Su, Ching-Chuan

Author_Institution

Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

Volume

43

Issue

2

fYear

1995

fDate

2/1/1995 12:00:00 AM

Firstpage

374

Lastpage

382

Abstract

A numerical procedure based on the finite-difference method and simultaneous iteration of the power method in conjunction with the Chebyshev acceleration technique is utilized to analyze the metallic waveguides. Due to the efficiency of the present sparse matrix eigenproblem solver, lots of unknowns can be used in the domains of the waveguide cross-sections. Therefore, accurate cutoff wavenumbers or frequencies can be obtained by using the simple finite-difference method for the commonly used metallic waveguides such as the L-shaped, single-ridged, double-ridged, and rectangular coaxial waveguides. Some discrepancies with the numerical results in the recent literature are found and detailed discussions are provided to verify the correctness of the present results

Keywords

coaxial waveguides; eigenvalues and eigenfunctions; finite difference methods; iterative methods; rectangular waveguides; waveguide theory; Chebyshev acceleration; L-shaped waveguides; cutoff wavenumbers; double-ridged waveguides; finite-difference method; iterative methods; metallic waveguides; rectangular boundaries; rectangular coaxial waveguides; single-ridged waveguides; sparse matrix eigenproblem solver; waveguide cross-sections; Acceleration; Band pass filters; Chebyshev approximation; Eigenvalues and eigenfunctions; Electromagnetic waveguides; Finite difference methods; Rectangular waveguides; Sparse matrices; TEM cells; Transmission line matrix methods;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.348098

Filename

348098