Modal analysis of multi-connected waveguides

Author

Carbonini, Lorenzo

Author_Institution

Alenia Sistemi Difesa, Caselle Torinese, Italy

Volume

40

Issue

4

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

665

Lastpage

671

Abstract

A general analysis for the modal characterization of multiconnected uniform, hollow, conducting waveguides is presented. It is relevant to waveguides with an `outer´ conductor for which analytical Green´s functions are known and `inner´ conductors described by integral equations. The transverse electromagnetic (TEM)-mode space is analyzed, and singularities of the integral equations are studied to determine the higher-order modes. The cases of parallel wires into rectangular waveguides and above a ground plane are addressed in detail; experimental results about a complex multiwire line are reported. Mixed coaxial and circular offset coaxial waveguides are also analyzed. Spurious solutions arise due to the structure of the integral equations for multiconnected waveguides. Criteria to discard such modes are presented

Keywords

Green´s function methods; integral equations; rectangular waveguides; waveguide theory; TEM mode space; conducting waveguides; higher-order modes; hollow waveguides; integral equations; modal characterization; multi-connected waveguides; multiconnected waveguides; multiwire line; singularities; transverse electromagnetic; Coaxial components; Conductors; Electromagnetic analysis; Electromagnetic waveguides; Green´s function methods; Hollow waveguides; Integral equations; Modal analysis; Planar waveguides; Wires;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.127514

Filename

127514