Title :
Cryogenic sapphire oscillator with improved frequency stability
Author :
Chang, S. ; Mann, A.G. ; Luiten, A.N.
Author_Institution :
Dept. of Phys., Western Australia Univ., Nedlands, WA, Australia
Abstract :
Extremely high short-term frequency stability has been realized in oscillators based on liquid helium cooled sapphire resonators with a modified mounting structure. These oscillators have exhibited an Allan deviation of about 5.4×10-16τ1/2 for integration time τ of 1-4 s and a minimum Allan frequency deviation of 2.4×10-16 at 32 s
Keywords :
Q-factor; dielectric resonator oscillators; frequency stability; frequency standards; microwave oscillators; phase noise; Allan deviation; cryogenic sapphire oscillator; dielectric resonators; extremely high short-term frequency stability; ferrite circulator; frequency pulling; improved frequency stability; liquid helium cooled sapphire resonators; modified mounting structure; phase noise; Atomic clocks; Cryogenics; Dielectrics; Helium; Microwave oscillators; Phase modulation; Q factor; Resonant frequency; Stability; Temperature;
Conference_Titel :
Frequency Control Symposium and Exhibition, 2000. Proceedings of the 2000 IEEE/EIA International
Conference_Location :
Kansas City, MO
Print_ISBN :
0-7803-5838-4
DOI :
10.1109/FREQ.2000.887403
