Mode-matching analysis of circular-ridged waveguide discontinuities

Author

Balaji, Uma ; Vahldieck, Ruediger

Author_Institution

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

Volume

46

Issue

2

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

191

Lastpage

195

Abstract

This paper describes a mode-matching algorithm for S-parameter computation of circular-ridged waveguide (CRW) discontinuities. The ridges are shaped like the cross section of a cone (pie-shaped) with a geometry that can he described in cylindrical coordinates. This idea avoids the use of a mixed-coordinate system in the analysis of the electromagnetic fields in the ridged sections, which can, therefore, be expressed in terms of modal functions. The resulting algorithm is fast and accurate and has been utilized to design and optimize a five-section double-ridge filter and a quadruple-ridge waveguide transformer. The measured response of the filter is in good agreement with the calculated data

Keywords

S-parameters; circular waveguides; eigenvalues and eigenfunctions; electromagnetic fields; mode matching; ridge waveguides; waveguide discontinuities; S-parameter computation; circular-ridged waveguide discontinuities; cylindrical coordinates; electromagnetic fields; five-section double-ridge filter; modal functions; mode-matching analysis; quadruple-ridge waveguide transformer; Algorithm design and analysis; Design optimization; Electromagnetic analysis; Electromagnetic fields; Electromagnetic measurements; Electromagnetic waveguides; Filters; Geometry; Scattering parameters; Waveguide discontinuities;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.660987

Filename

660987