Phase-lock loop systems

Details Phase-lock loop systems Phase-lock loop systems

1974-07-23

1987-06-09

Tubbesing, T. H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Search sweep of oscillator

331 25, 331DIG2, 342103, H03L 706

Patent

active

046723307

ABSTRACT:
A phase-lock loop system with particular use in radar tracking systems is disclosed. From a number of input signals of varying frequencies such as a carrier frequency and several side band frequencies the system can lock into phase and frequency with the input which has the largest amplitude by sweeping across a predetermined range of frequencies and allowing the phase-lock loop to operate only when a predetermined amplitude is exceeded.

REFERENCES:
patent: 2848615 (1958-08-01), Rother et al.
patent: 3487311 (1969-12-01), Luhowy
patent: 3852682 (1974-12-01), Dawe et al.

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