Ultra-stable performance of the superconducting cavity maser

Author

Dick, G.J. ; Wang, R.T.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

fYear

1990

fDate

11-14 June 1990

Firstpage

8

Lastpage

9

Abstract

Measurements on the superconducting cavity maser (SCM) oscillator that show frequency stability of parts in 10/sup 5/ for times from 1 s to 10000 s are reported. A phase noise of approximately -80 dB/f/sup 3/ was measured. This short- and midterm performance is believed to be better than that of any known microwave oscillator. In particular, stability at a measuring time of 1 s is ten times better than that of a hydrogen maser, and phase noise is more than 20 dB below that of the best multiplied quartz crystal oscillators.<>

Keywords

frequency measurement; frequency stability; low-temperature techniques; masers; measurement standards; microwave measurement; microwave oscillators; random noise; superconducting devices; time measurement; cryogenic oscillator; frequency stability; frequency standard; maser; microwave oscillator; phase noise; superconducting cavity; time standard; Frequency measurement; Masers; Microwave oscillators; Noise measurement; Particle measurements; Phase measurement; Phase noise; Stability; Superconducting device noise; Superconducting microwave devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on

Conference_Location

Ottawa, Ontario, Canada

Type

conf

DOI

10.1109/CPEM.1990.109898

Filename

109898