DocumentCode
1171314
Title
Frequency-locked loop circuit providing large pull-in range
Author
Glance, B. ; Wilson, Robert W.
Author_Institution
AT&T Bell Labs., Holmdel, NJ, USA
Volume
25
Issue
15
fYear
1989
fDate
7/20/1989 12:00:00 AM
Firstpage
965
Lastpage
967
Abstract
Presents a frequency-locking circuit that provides a larger pull-in bandwidth than that of a conventional automatic frequency control (AFC) circuit. In addition, the proposed circuit has a stable mode of operation over the full frequency response of the frequency discriminator, and locks the oscillator at exactly the centre frequency of this discriminator. The frequency offset and the unstable mode of operation presented by the conventional circuit outside its pull-in range can thus be eliminated.
Keywords
automatic frequency control; discriminators; phase-locked loops; automatic frequency control; centre frequency; frequency discriminator; frequency offset; frequency response; frequency-locking circuit; pull-in bandwidth; stable mode; unstable mode;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19890646
Filename
31970
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