Digital Lock-Loop Frequency Offset Correction and Display Apparatus.

Abstract

The patent application describes a digital lock-loop frequency offset correction apparatus for detecting and correcting variations in R.F. input signals in order to hold the R.F. input signals centered in a narrow band receiver system. The digital lock-loop frequency offset correction apparatus eliminates a search routine by comparing the received signal with a locally generated standard. The detected error signal controls a frequency synthesizer which acts as a second local oscillator to keep the R.F. signal centered in the second I.F. stage.

Document Details

Document Type
Technical Report
Publication Date
May 17, 1976
Accession Number
ADD002757

Entities

People

  • Anthony Greci

Organizations

  • United States Department of the Air Force

Tags

DTIC Thesaurus Topics

  • Electronic Equipment
  • Frequency
  • Frequency Bands
  • Frequency Synthesizers
  • Local Oscillators
  • Oscillators
  • Patent Applications
  • Patents
  • Radio Frequency
  • Radio Frequency Oscillators
  • Standards

Readers

  • Radio communications and signal processing.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).