A Low Noise Synthesizer for Autotuning and Performance Testing of Hydrogen Masers

Abstract

A low noise synthesizer has been developed for use in hydrogen maser autotuning and performance evaluation. this synthesizer replaces the frequency offset maser normally used for this purpose and allows the user to maintain all masers in the ensemble at the same frequency. The synthesizer design utilizes a quartz oscillator with a B.V.A. resonator. The oscillator has a frequency offset of 5 x 10 to the minus 8 power. The B.V.A. oscillator is phase-locked to a hydrogen maser by means of a high gain, high stability phase-locked loop, employing low noise multipliers as phase error amplifiers. A functional block diagram of the synthesizer and performance data will be presented.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1984
Accession Number
ADA497014

Entities

People

  • James M. Cloeren
  • Jeffrey S. Ingold

Organizations

  • Johns Hopkins University

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Atomic Beam Masers
  • Elements
  • Frequency
  • Generators
  • High Gain
  • Hydrogen
  • Information Operations
  • Low Noise
  • Masers
  • Noise
  • Oscillators
  • Performance Tests
  • Physics Laboratories
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Robotics and Automation.