A Hydrogen Maser with Cavity Auto-Tuner for Timekeeping

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 the 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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA519500

Entities

People

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

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Atomic Beam Masers
  • Cavity Resonators
  • Crystal Filters
  • Detectors
  • Elements
  • Frequency
  • Frequency Bands
  • Frequency Response
  • Frequency Standards
  • Generators
  • Hydrogen
  • Masers
  • Observatories
  • Resonant Frequency
  • Standards
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Positioning, Navigation, and Timing (PNT) Technology.