Title :
Improved performance of the superconducting cavity maser at short measuring times [atomic frequency standards]
Author :
Wang, R.T. ; Dick, G.J.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
Measurements on a superconducting cavity maser oscillator are presented which show a frequency stability of parts in 1015 for times from 1 second to 1000 seconds. A phase noise of approximately -80 dB/f3, where f is frequency, is shown. The measured stability at a 1 second interval is 10 times better than that of a hydrogen maser, and phase noise at 8 GHz is more than 20 dB below that of a multiplied quartz crystal oscillator
Keywords :
cavity resonators; frequency measurement; frequency stability; masers; measurement standards; random noise; superconducting devices; 8 GHz; atomic frequency standards; frequency stability; phase noise; superconducting cavity maser; Atomic measurements; Frequency measurement; Hydrogen; Masers; Microwave oscillators; Stability; Superconducting device noise; Superconducting magnets; Superconducting microwave devices; Temperature;
Conference_Titel :
Frequency Control, 1990., Proceedings of the 44th Annual Symposium on
Conference_Location :
Baltimore, MD
DOI :
10.1109/FREQ.1990.177485
