Full-wave characterisation of superconducting microstrip lines

Author

Mayouf, A. ; Djahli, F. ; Lakhlef, F. ; Omeir, Y.

Author_Institution

Dept. of Electron, Univ. Ferhat Abbas, Setif, Algeria

Volume

148

Issue

2

fYear

2001

fDate

4/2/2001 12:00:00 AM

Firstpage

97

Lastpage

102

Abstract

A new theoretical model is presented to characterise a superconducting microstrip line on a lossy substrate, and the effects of strip thickness and losses on circuit performance studied. Although the high-T_c superconductor is considered anisotropic the effect of this anisotropy may be neglected in the characterisation of the microstrip transmission line. New integral equations for the electric field components are formulated in the spectral domain using the exact dyadic Green´s function of Mao et al. (1996), applied to the superconducting microstrip structures. A suitable procedure is developed for a CAD tool to analyse the lines of lossy substrates. Results for attenuation constant and effective permittivity as a function of frequency and normalised temperature are obtained

Keywords

Green´s function methods; electric field integral equations; high-temperature superconductors; microstrip lines; permittivity; spectral-domain analysis; superconducting microwave devices; waveguide theory; CAD tool; EFIE; attenuation constant; dyadic Green´s function; effective permittivity; electric field components; electric field integral equation; frequency dependence; full-wave characterisation; high-T_c superconductor; lossy substrate; spectral domain; strip thickness effect; superconducting microstrip lines; temperature dependence;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:20010336

Filename

929779