Title :
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
fDate :
6/1/1998 12:00:00 AM
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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
