Analysis of waveguide discontinuities using eigenmode expansion

Author

Othman, M.A. ; Eshrah, Islam A. ; Abuelfadl, Tamer M.

Author_Institution

Electron. & Electr. Commun. Eng. Dept., Cairo Univ., Cairo, Egypt

fYear

2013

fDate

2-7 June 2013

Firstpage

1

Lastpage

3

Abstract

A novel semi-analytical modal formalism is developed utilizing known solenoidal and irrotational cavity eigenmodes to solve electromagnetic scattering inside waveguides. The proposed approach is based on the use of modal expansion of fields to solve Maxwell´s equations, in conjunction with a convenient choice of port boundary conditions, which results in an eigenmode projection problem. With the help of the generalized scattering matrix (GSM) approach, waveguides discontinuities loaded with arbitrary dielectric profiles can easily be analyzed. Convergence studies show consistent solutions for a small number of expansion modes.

Keywords

Maxwell equations; S-matrix theory; electromagnetic wave scattering; waveguide discontinuities; GSM; Maxwell equations; arbitrary dielectric profiles; eigenmode expansion; eigenmode projection problem; electromagnetic scattering; generalized scattering matrix; irrotational cavity eigenmodes; port boundary conditions; semianalytical modal formalism; solenoidal cavity eigenmodes; waveguide discontinuity; Cavity resonators; Eigenvalues and eigenfunctions; Electromagnetic waveguides; Ports (Computers); Surface waves; Transmission line matrix methods; Waveguide discontinuities; Eigenfunctions; Generalized Scattering Matrix (GSM); Modal Expansion;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International

Conference_Location

Seattle, WA

ISSN

0149-645X

Print_ISBN

978-1-4673-6177-4

Type

conf

DOI

10.1109/MWSYM.2013.6697659

Filename

6697659