DocumentCode :
1219011
Title :
Cryogenic opened cavity sapphire resonator for ultra-stable oscillator
Author :
Bourgeois, P.Y. ; Kersale, Yann ; Bazin, N. ; Chaubet, Michel ; Giordano, V.
Author_Institution :
Lab. de Phys. et de Metrologie des Oscillateurs, Besancon, France
Volume :
39
Issue :
10
fYear :
2003
fDate :
5/15/2003 12:00:00 AM
Firstpage :
780
Lastpage :
781
Abstract :
A new high-Q sapphire whispering gallery mode resonator is proposed to achieve ultra-high frequency stability. It is proposed to use the sapphire resonator without metallic walls to suppress spurious modes perturbating the main resonance. Providing the azimuthal order of the chosen whispering gallery mode is sufficiently high, Q-factors better than 2×108 have been observed, which turn out to be sufficient to reach a high frequency stability. A first oscillator prototype operating at 12 GHz shows a relative frequency instability of 3×10-14.
Keywords :
Q-factor; cavity resonators; circuit stability; cryogenic electronics; dielectric resonator oscillators; frequency stability; microwave oscillators; sapphire; 12 GHz; Al2O3; WGM resonator; cryogenic open cavity sapphire resonator; high-Q sapphire resonator; spurious modes suppression; ultra-high frequency stability; ultra-stable oscillator; whispering gallery mode resonator;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el:20030509
Filename :
1204780
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1219011
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