Title :
Modal analysis of multi-connected waveguides
Author :
Carbonini, Lorenzo
Author_Institution :
Alenia Sistemi Difesa, Caselle Torinese, Italy
fDate :
4/1/1992 12:00:00 AM
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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
