A digital automatic frequency control design.

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Authors
Ewing, Glenn Everette
Subjects
automatic frequency control
high frequency communications
discrete network
digital integrator
Advisors
Adler, R.W.
Date of Issue
1976-03
Date
March 1976
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
This paper describes a digital automatic frequency control (AFC) system designed for use with almost any conventionally-tuned, high-frequency communications equipment. When connected to a high-quality equipment, such as an R-390 receiver, frequency accuracy and stability approaching that of frequency synthesizers can be obtained. The AFC system digitally counts the frequency of all frequency-determining oscillators in the controlled equipment, computes and displays the operating frequency to the nearest Hertz. When the AFC is engaged, any deviation of the computed operating frequency from the desired frequency causes an error correction voltage to be generated. Use of this system requires that the controlled equipment be modified for voltage trimming of the tuning oscillator.
Type
Thesis
Description
Series/Report No
Department
Electrical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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