• 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.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1219011