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Ultrastable automatic frequency controlCenter frequency of wideband AFC circuit drifts only hundredths of percent per day. Since circuit responds only to slow frequency drifts and modulation signal has high-pass characteristics, AFC does not interfere with normal FM operation. Stable oscillator, reset circuit, and pulse generator constitute time-averaging discriminator; digital counter in pulse generator replaces usual monostable multivibrator.
Document ID
19800000294
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Sabourin, D. J. (Motorola, Inc.)
Furiga, A. (Motorola, Inc.)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Publication Information
Publication: NASA Tech Briefs
Volume: 5
Issue: 3
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
MSC-18679
Accession Number
80B10294
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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