Title :
Room temperature dual-mode oscillator - first results
Author :
Torrealba, J.A. ; Tobar, M.E. ; Ivanov, E.N. ; Locke, C.R. ; Hartnett, J.G. ; le Floch, J.-M. ; Cros, D.
Author_Institution :
Sch. of Phys., Western Australia Univ., Crawley, WA, Australia
Abstract :
A frequency stability analysis of a room temperature frequency-temperature compensated dual-mode resonator oscillator (patent pending) is presented. Using a single crystal cylindrical sapphire resonator, 40 mm in diameter and 20 mm high, two orthogonally polarized whispering gallery modes were simultaneously excited, with the difference frequency temperature dependence aned near 304 K. The standard Allan deviation of the 3.39 GHz beat between the two modes was measured to be approximately 8 × 10-12 between 1 and 4s.
Keywords :
crystal oscillators; frequency stability; microwave oscillators; sapphire; whispering gallery modes; 20 nm; 3.39 GHz; 40 nm; Al2O3; Allan deviation; dual-mode oscillator; dual-mode resonator oscillator; frequency stability analysis; frequency-temperature compensation; single crystal cylindrical sapphire resonator; whispering gallery modes; Copper; Electromagnetic coupling; Helium; Microwave oscillators; Polarization; Probes; Q factor; Resonant frequency; Temperature; Whispering gallery modes;
Conference_Titel :
Frequency Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE International
Print_ISBN :
0-7803-9053-9
DOI :
10.1109/FREQ.2005.1573961