Title :
Superconducting microstrip resonator with yttrium iron garnet single crystals
Author :
Fukusako, Takeshi ; Tsutsumi, Makoto
Author_Institution :
Dept. of Electron. & Inf. Sci., Kyoto Inst. of Technol., Japan
fDate :
11/1/1997 12:00:00 AM
Abstract :
A magnetically tunable microstrip superconducting resonator using an yttrium-iron-garnet (YIG) single crystal was demonstrated experimentally. Tunability of 200 MHz at a center frequency of 5.3 GHz was observed, and a quality factor of 965 with minimum insertion loss of 19.5 dB was measured for a half-wavelength microstrip line consisting of a YIG-YBCO-MgO composite structure. The dispersion relation of the resonator was analyzed using the spectral-domain method and discussed with experimental results on the mixed states of TEM and magnetostatic-wave modes. Power dependence of the characteristics is also discussed
Keywords :
Q-factor; barium compounds; dispersion (wave); garnets; high-temperature superconductors; microstrip resonators; spectral-domain analysis; superconducting microwave devices; superconducting resonators; yttrium compounds; 19.5 dB; 200 MHz; 5.3 GHz; MgO; YFe5O12-YBaCuO-MgO; YIG-YBCO-MgO composite structure; YIG-YBaCuO-MgO; center frequency; dispersion relation; half-wavelength microstrip line; insertion loss; magnetically tunable resonators; magnetostatic-wave modes; mixed states; quality factor; spectral-domain method; superconducting microstrip resonator; Frequency measurement; Garnets; Insertion loss; Iron; Loss measurement; Magnetostatics; Microstrip resonators; Q factor; Superconducting magnets; Yttrium;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
