Conformal mapping of the field and charge distributions in multilayered substrate CPWs

Author

Carlsson, Erik ; Gevorgian, Spartak

Author_Institution

Ericsson Microwave Syst. AB, Molndal, Sweden

Volume

47

Issue

8

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

1544

Lastpage

1552

Abstract

Conformal mapping (CM) and partial capacitance techniques are used for analytical evaluation of charge/current and electric- and magnetic-field distributions in a multilayered substrate coplanar waveguide (CPW) in the quasi-TEM approximation. The results, compared with finite-element method simulations, show that the magnetic wall assumed at the dielectric-dielectric interfaces in CM is a good approximation for many practical cases. The method is applied to a CPW with a thin ferroelectric film used in tunable microwave devices

Keywords

capacitance; coplanar waveguide components; coplanar waveguides; electromagnetic shielding; ferroelectric thin films; microwave integrated circuits; charge distributions; conformal mapping; dielectric-dielectric interfaces; ferroelectric film; field distributions; magnetic wall; multilayered substrate CPWs; partial capacitance techniques; quasi-TEM approximation; tunable microwave devices; Capacitance; Conformal mapping; Coplanar waveguides; Dielectric substrates; Ferroelectric films; Finite element methods; Magnetic analysis; Microwave devices; Microwave theory and techniques; Waveguide components;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.780407

Filename

780407