Power dependence of HTS disk-resonator quality factor

Author

Vendik, Orest G. ; Vendik, Irina B.

Author_Institution

Dept. of Microwave Technol., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

46

Issue

6

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

851

Lastpage

856

Abstract

The simple closed-form model of nonlinear response of a high-temperature superconducting disk resonator on microwave power is proposed. The model is based on superconducting film nonlinearity and describes the dependence of unloaded quality factor on the incident power. The specified normalizing power is used as the only fitting parameter. Good quantitative agreement of modeled and measured data has been obtained. The results observed exhibit the kinetic nature of the nonlinearity of the disk resonator on an LaAlO₃ substrate at T=60 K and more complicated, presumably thermal, heating nature of the nonlinearity at lower temperature

Keywords

Q-factor; high-temperature superconductors; modelling; superconducting microwave devices; superconducting resonators; superconducting thin films; 60 K; HTS disk-resonator Q-factor; LaAlO₃; LaAlO₃ substrate; closed-form model; high-temperature superconducting resonator; incident power; microwave power; nonlinear response; power dependence; resonator quality factor; superconducting film nonlinearity; unloaded quality factor; Electromagnetic heating; High temperature superconductors; Microwave technology; Power transmission lines; Q factor; Superconducting films; Superconducting filters; Superconducting microwave devices; Superconducting transmission lines; Surface resistance;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.681212

Filename

681212