A new technique for the quasi-TEM analysis of conductor-backed coplanar waveguide structures

Author

Cheng, Kwok K M ; Everard, Jeremy K A

Author_Institution

Dept. of Electron. & Electr. Eng., London Univ., UK

Volume

41

Issue

9

fYear

1993

fDate

9/1/1993 12:00:00 AM

Firstpage

1589

Lastpage

1592

Abstract

Numerically efficient and accurate formulae based on the spectral domain method for the analysis of conductor backed coplanar waveguide structures are presented. Quasi-TEM parameters are obtained for these waveguide structures by using piecewise linear functions to approximate the potential distribution at the air-dielectric interface. Techniques such as nonuniform discretization and bound estimation are described which demonstrate shorter computational times. Results on the characteristic impedance calculation of standard coplanar waveguide are given to demonstrate the numerical accuracy and efficiency of the method presented here

Keywords

electric impedance; numerical analysis; piecewise-linear techniques; spectral-domain analysis; waveguide theory; air-dielectric interface; bound estimation; characteristic impedance; conductor-backed coplanar waveguide structures; nonuniform discretization; numerical accuracy; piecewise linear functions; potential distribution; quasi-TEM analysis; spectral domain method; Chebyshev approximation; Conductors; Coplanar waveguides; Coupling circuits; Impedance; Integral equations; Laplace equations; Linear approximation; Piecewise linear approximation; Piecewise linear techniques;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.245682

Filename

245682