DocumentCode
962471
Title
A digital phase-locked loop for generating frequency discriminating codes and frequency multiplication
Author
Saha, A.R. ; Mazumder, B.C.
Author_Institution
Jadavpur University, Calcutta, India
Volume
69
Issue
4
fYear
1981
fDate
4/1/1981 12:00:00 AM
Firstpage
472
Lastpage
473
Abstract
A new digital phase-locked loop system realizale by a few off-the shelf digital ICs is described. The system is locked by tracking the input square wave and produces an output binary code whose value is proportional to the input frequency. It is characterized by wide locking range and fast capture time down to very low frequencies (<1 Hz) and suited to low frequency multiplication. Asymmetry in capture time, however, limits its use as an FM demodulator to only slowly varying signals.
Keywords
Bandwidth; Binary codes; Capacitors; Counting circuits; Demodulation; Filters; Frequency conversion; Frequency locked loops; Frequency modulation; Phase locked loops;
fLanguage
English
Journal_Title
Proceedings of the IEEE
Publisher
ieee
ISSN
0018-9219
Type
jour
DOI
10.1109/PROC.1981.11995
Filename
1456263
Link To Document