Title :
Temperature compensated cryogenic whispering gallery mode resonator for microwave frequency standard applications
Author :
Hao, L. ; Klein, N. ; Radcliffe, W.J. ; Gallop, J.C. ; Ghosh, I.S.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
We have investigated a miniature composite dielectric resonator employing a sapphire puck and a single crystalline platelet of rutile, excited in a whispering gallery mode. We have achieved values of the Allan variance as low as 4/spl times/10/sup -12/ for an integration time of 1000 seconds with the prototype system.
Keywords :
Q-factor; cavity resonators; cryogenics; dielectric resonator oscillators; frequency stability; frequency standards; microwave measurement; microwave oscillators; phase locked oscillators; Al/sub 2/O/sub 3/-TiO/sub 2/; Allan variance; H maser gated counter; Pound circuit; cryogenic whispering gallery mode resonator; frequency stability; high Q resonators; integration time; microwave frequency standard; miniature composite dielectric resonator; prototype system; sapphire puck; single crystalline rutile platelet; stable oscillator; temperature compensated; Clocks; Cryogenics; Dielectric losses; Military standards; Resonant frequency; Stability; Standards development; Temperature; Turning; Whispering gallery modes;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699777
