Analysis of planar structures by an integral approach using entire domain trial functions

Author

Nadarassin, M. ; Aubert, H. ; Baudrand, H.

Author_Institution

Lab. de Microondes, ENSEEIHT, Toulouse, France

Volume

43

Issue

10

fYear

1995

fDate

10/1/1995 12:00:00 AM

Firstpage

2492

Lastpage

2495

Abstract

In this paper, a method based on an integral formulation with an excitation term is presented. The particularities of this approach lie in the utilization of entire domain trial functions and in the characterization of the coupling effect due to the excitation mechanism. The trial functions are taken as the TE-TM modes of a waveguide whose cross section corresponds to the shape of the discontinuity. The trial functions are computed and stored in the memory, then the study of complex planar structures becomes easy. A complete study is proposed, including the analysis of the coupling mechanism due to the source interaction and the characterization of higher order modes influence. This work is followed by two applications: a multiaxial discontinuity (bend discontinuity) in microstrip and in CPW. The computed results have been compared with data furnished by the literature. A good accuracy has been obtained

Keywords

coplanar waveguides; functions; integral equations; microstrip discontinuities; waveguide discontinuities; waveguide theory; CPW; TE-TM modes; bend discontinuity; coupling effect; discontinuity; entire domain trial functions; excitation term; higher order modes; integral formulation; microstrip; multiaxial discontinuity; planar structures; source interaction; waveguide; Circuits; Coplanar waveguides; Eigenvalues and eigenfunctions; Impedance; Integral equations; Iterative methods; Microstrip; Shape; Transmission line matrix methods; Waveguide discontinuities;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.466185

Filename

466185