Externally Compensated Crystal Oscillator (ECXO) Study.

Abstract

The primary objective of this contract was an investigation and exploratory development of an externally compensated crystal oscillator (EXCO) in which frequency-temperature compensation of the C-mode frequency of an SC-cut quartz crystal is achieved by utilizing the concurrent B-mode frequency as a highly sensitive digital temperature sensor. The digitized B-mode output, used in conjunction with a microcomputer and a stored frequency/temperature look-up table or a suitable compensation algorithm, is able to provide precise and accurate clock corrections over a much wider range than that possible with a conventional TCXO oscillator (a temperature compensated oscillator which employs a voltage-variable capacitor for direct oscillator frequency control).

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1984
Accession Number
ADA150335

Entities

People

  • C. S. Stone
  • O. J. Baltzer

Organizations

  • Tracor

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Algorithms
  • Capacitors
  • Climate Change
  • Computers
  • Contracts
  • Control Systems
  • Crystal Oscillators
  • Frequency
  • Identification Systems
  • Low Temperature
  • Modulation
  • Oscillators
  • Quartz Resonators
  • Resonance
  • Resonant Frequency

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Electronics Engineering
  • Thermal Physics or Thermal Science.