Equivalent circuit parameters of coplanar stripline discontinuities

Author

Chill, C.-W.

Author_Institution

Dept. of Electron. Eng., Ming-hsin Inst. of Technol., Hsinchu

Volume

149

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

11

Lastpage

16

Abstract

The paper reports a study of equivalent capacitances and inductances of various coplanar stripline (CPS) discontinuities. To deal with equivalent capacitance, an integral equation for governing the distribution of excess charge near CPS discontinuity is derived and subsequently solved by the method of moments together with Galerkin´s approach. The equivalent inductance is determined from the equivalent capacitance of its complementary structure, i.e. a coplanar waveguide discontinuity in free space by means of the duality concept. Numerical results for the open end, the symmetric step, the short end, and other extensive discontinuities are presented. In addition, simulated results in a quasistatic model are compared with data obtained by the FDTD method

Keywords

Galerkin method; capacitance; coplanar transmission lines; finite difference time-domain analysis; inductance; integral equations; method of moments; network parameters; strip line discontinuities; CAD; CPS discontinuity; FDTD method; Galerkin´s approach; MMIC; coplanar stripline discontinuities; coplanar waveguide discontinuity; duality concept; equivalent capacitance; equivalent circuit parameters; equivalent inductance; excess charge distribution; finite element method; free space; integral equation; integral equations; method of moments; open end; quasistatic model; short end; simulated results; slot aperture; symmetric step;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:20020183

Filename

999095