A Hydrogen Maser With Cavity Auto-Tuner for Timekeeping

C.F. Lin, J.W. He, Z.C. Zhai

Abstract:	A hydrogen maser frequency standard for timekeeping has been worked at Shanghai Observatory. The maser employs a fast cavity auto-tuner, which can detect and compensate frequency drift of the high-Q resonant cavity with a short time constant by means of a signal injection method, so the long term frequency stability of the maser standard was greatly improved. This paper describes the cavity auto-tuning system and some maser data obtained from the atomic time comparison.
Published in:	Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting December 3 - 5, 1991 Pasadena, California
Pages:	161 - 168
Cite this article:	Lin, C.F., He, J.W., Zhai, Z.C., "A Hydrogen Maser With Cavity Auto-Tuner for Timekeeping," Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting, Pasadena, California, December 1991, pp. 161-168.
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