Full-wave analysis of superconducting microstrip lines on anisotropic substrates using equivalent surface impedance

Author

Lee, Loo Hay ; Lyons, W.G. ; Orlando, T.P. ; Ali, Shaima Mohammed ; Withers, Richard S.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA

Volume

41

Issue

12

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

2359

Lastpage

2367

Abstract

A computationally efficient full-wave technique is developed to analyze superconducting microstrip lines on M-plane sapphire in which the optical axis is in the plane of the substrate at an arbitrary angle with respect to the propagation direction. To increase the efficiency of the method, the superconducting strip is replaced by an equivalent surface impedance which accounts for the loss and kinetic inductance of the superconductor. The complex propagation constant and characteristic impedance are calculated. The calculated results show good agreement with previously published data and with the results of the more rigorous volume-integral-equation method

Keywords

losses; microstrip lines; sapphire; superconducting junction devices; superconducting microwave devices; waveguide theory; M-plane sapphire; anisotropic substrates; characteristic impedance; complex propagation constant; equivalent surface impedance; full-wave technique; kinetic inductance; loss; optical axis; propagation direction; superconducting microstrip lines; Anisotropic magnetoresistance; Dielectric substrates; High temperature superconductors; Microstrip; Optical resonators; Strips; Superconducting filters; Superconducting microwave devices; Superconducting transmission lines; Surface impedance;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.260729

Filename

260729