Frequency detector for frequency locked loop

Details Frequency detector for frequency locked loop Frequency detector for frequency locked loop

1987-10-23

1989-01-31

Laroche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 25, 307528, 328134, H03L 708, H03L 718, H03D 1300

Patent

active

048018945

ABSTRACT:
A frequency synthesizer circuit employs a frequency detector that receives a reference frequency signal and a variable frequency signal and that generates a difference output signal after detecting a complete cycle of the one of the reference frequency and variable frequency signals that is of the highest frequency, the difference output signal being a function of the difference between the frequency of the reference signal and the frequency of the variable frequency signal.

REFERENCES:
patent: 4494021 (1985-01-01), Bell et al.

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