Phase detector for phase locked loops

Details Phase detector for phase locked loops Phase detector for phase locked loops

1979-05-21

1981-06-30

Grimm, Siegfried H.

Oscillators

Relaxation oscillators

328155, 331 1A, 331 27, H03D 1300

Patent

active

042765129

ABSTRACT:
A phase locked loop circuit employing a first edge detector consisting of an exclusive OR gate and flip flop circuit feeding by way of a NAND gate, an up counter and a second edge detector of like kind feeding also by way of a NAND gate into a down counter. Both counters feed into an added which provides a signal to a decoder representing the phase difference between the input phase and the output phase signal. The phase processing system provides positive rapid pull-in over the entire frequency range capability of the VCO, which allows narrow bandwidth loops to track rapid rates of frequency change without loss of lock and with great accuracy.

REFERENCES:
patent: 3657659 (1972-04-01), Johnson
patent: 3723889 (1973-03-01), Oberst
patent: 3989931 (1976-11-01), Phillips

Affiliated with

Also associated with

Rating

Phase detector for phase locked loops does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase detector for phase locked loops, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase detector for phase locked loops will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2434529