A moment method analysis for coplanar waveguide discontinuity inductances

Author

Chiu, Chien-Wen ; Wu, Ruey-Beei

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

41

Issue

9

fYear

1993

fDate

9/1/1993 12:00:00 AM

Firstpage

1511

Lastpage

1514

Abstract

Based on the concept of duality, the quasi-static equivalent inductance of a coplanar waveguide discontinuity is determined from the equivalent capacitance of its complementary structure, i.e., a coplanar strip discontinuity in free space. For the capacitance calculation, an integral equation governing the excess charge distribution near the discontinuity is solved by the method of moments together with Galerkin´s approach. Numerical results for the short end and symmetric step change are presented. The good agreement with the data available from the full-wave analyses reveals that this approach is simple, accurate, and very suitable in the CAD for MMICs

Keywords

inductance; integral equations; microstrip lines; waveguide theory; CPW; Galerkin´s approach; MMIC CAD; capacitance calculation; complementary structure; coplanar strip; coplanar waveguide discontinuity; discontinuity inductances; equivalent capacitance; excess charge distribution; integral equation; moment method analysis; quasi-static equivalent inductance; short end; symmetric step change; Capacitance; Coplanar waveguides; Current distribution; Electromagnetic waveguides; Inductance; MMICs; Moment methods; Strips; Transmission line discontinuities; Waveguide discontinuities;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.245669

Filename

245669