Title :
Low phase noise superconducting oscillators
Author :
Khanna, A.P.S. ; Schmidt, Martin
Author_Institution :
Avantek Inc., Milpitas, CA, USA
Abstract :
Microstrip resonators fabricated from thallium high-temperature superconducting thin-films have been demonstrated to have loaded Q values in the 8000 to 20000 range at frequencies up to X band. The resonators are used as the stabilizing elements in low-phase-noise microwave oscillators. Results in oscillators using TlBaCaCuO superconducting thin-film resonators and low-noise GaAs FET amplifiers operating at frequencies of 2.3 GHz and 10.2 GHz are presented. These superconducting oscillators demonstrate improved performance over conventional dielectric resonator oscillators operating at the same frequencies.<>
Keywords :
Q-factor; barium compounds; calcium compounds; high-temperature superconductors; microwave oscillators; resonators; solid-state microwave circuits; strip line components; superconducting devices; superconducting thin films; thallium compounds; 10.2 GHz; 2.3 GHz; GaAs; Q-factors; TlBaCaCuO; X band; frequencies; high temperature superconductors; loaded Q values; low-noise GaAs FET amplifiers; low-phase-noise microwave oscillators; microstrip resonators; stabilizing elements; superconducting oscillators; superconducting thin-film resonators; Frequency; Gallium arsenide; High temperature superconductors; Microstrip resonators; Microwave FETs; Microwave oscillators; Phase noise; Superconducting device noise; Superconducting microwave devices; Superconducting thin films;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.147245
