Title :
Development of Cryogenic Sapphire Oscillator at NMIJ/AIST
Author :
Watabe, K. ; Hartnett, J.G. ; Dcegami, T. ; Ohshima, Shigetoshi
Author_Institution :
Nat. Metrol. Inst. of Japan/AIST, Ibaraki
Abstract :
A cryogenic whispering gallery sapphire oscillator has been investigated. The prototype sapphire-loaded cavity oscillator was designed to oscillate at 10.812 GHz and exhibited a fractional frequency stability of 6 times 10-13 at integration times of 1 s, which is limited by a hydrogen maser reference
Keywords :
cryogenic electronics; frequency stability; masers; microwave oscillators; sapphire; whispering gallery modes; 1 s; 10.812 GHz; NMIJ/AIST; cryogenic sapphire oscillator; cryogenic whispering gallery oscillator; fractional frequency stability; hydrogen maser; sapphire-loaded cavity oscillator; Copper; Cryogenics; Frequency; Hydrogen; Masers; Microwave oscillators; Resonance; Stability; Steel; Temperature control;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305496
