Field-singularity correction in 2-D time-domain Haar-wavelet modeling of waveguide components

Author

Fujii, Masafumi ; Hoefer, Wolfgang J R

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

49

Issue

4

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

685

Lastpage

691

Abstract

A time-domain Haar-wavelet-based modeling technique has been applied to two-dimensional waveguide problems including discontinuities. The field singularity at discontinuities such as edges and corners of conductors is corrected by quasi-static field approximation. Combination of quasi-static correction and wavelet modeling significantly improves the computational efficiency compared to conventional time-domain analysis techniques. The proposed technique was applied to waveguides perturbed by thin and thick irises and also iris-coupled waveguide filters. The computational efficiency of the technique is demonstrated by examining the convergence of the results obtained with different discretizations

Keywords

Haar transforms; passive filters; time-domain analysis; waveguide components; waveguide discontinuities; waveguide filters; waveguide theory; wavelet transforms; 2D time-domain Haar-wavelet modeling; 2D waveguide problems; corners; discontinuities; edges; field-singularity correction; iris-coupled waveguide filters; quasi-static field approximation; thick irises; thin irises; two-dimensional waveguide problems; waveguide components; Boundary conditions; Computational efficiency; Conductors; Electromagnetic analysis; Electromagnetic waveguides; Finite difference methods; Time domain analysis; Waveguide components; Waveguide discontinuities; Wavelet analysis;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.915443

Filename

915443