A review of sapphire whispering gallery-mode oscillators including technical progress and future potential of the technology

Author

McNeilage, C. ; Searls, J.H. ; Ivanov, E.N. ; Stockwell, P.R. ; Green, D.M. ; Mossamaparast, M.

Author_Institution

Poseidon Sci. Instruments Pty Ltd, F´´remantle, WA, USA

fYear

2004

fDate

23-27 Aug. 2004

Firstpage

210

Lastpage

218

Abstract

We present the results of recent progress in the development of low phase noise signal generators based on sapphire "whispering gallery"-mode resonators, and look at the future potential of these oscillators to meet the ever-increasing demands for precision signal generation and processing. Beyond improving phase noise performance, future oscillators will be required to work over more demanding temperature ranges, with lower vibration sensitivity and greater reliability. We discuss the performance of sapphire oscillators, particularly those operating near room temperature, and present recent results of vibration sensitivity less than 10^-10 per g, phase noise of -146 dBc/Hz at 1 kHz offset and -170 dBc/Hz at 10 kHz offset from a 10.24 GHz carrier, and extended temperature operation.

Keywords

crystal oscillators; microwave oscillators; phase noise; sapphire; sensitivity; signal generators; whispering gallery modes; 10.24 GHz; phase noise; reliability; sapphire oscillators; sapphire whispering gallery-mode oscillators; signal generators; temperature ranges; vibration sensitivity; Australia; Cryogenics; Engine cylinders; Magnetic confinement; Microwave oscillators; Optical resonators; Phase noise; Physics; Radio frequency; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International

ISSN

1075-6787

Print_ISBN

0-7803-8414-8

Type

conf

DOI

10.1109/FREQ.2004.1418455

Filename

1418455