Preset network for a phase lock loop

Details Preset network for a phase lock loop Preset network for a phase lock loop

1979-02-26

1980-12-09

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

329 50, 329122, 331 25, H03L 710

Patent

active

042387396

ABSTRACT:
A phase lock loop (10) includes a frequency and phase preset network for presetting a local oscillator (20) in substantial synchronism with a carrier signal. The preset network utilizes time delayed output signals from split or double correlators (32, 34, 36, 38) to determine a change in the phase angle between the local oscillator signal and the carrier signal for a known time period to determine the frequency of the local oscillator signal relative to the carrier signal frequency. The preset network determines the phase of the local oscillator signal relative to the carrier signal phase utilizing the summed output of one split correlator (32 and 34) and of another split correlator (36 and 38).

REFERENCES:
patent: 3101448 (1963-08-01), Costas
patent: 3384824 (1968-05-01), Grenier
patent: 3458823 (1969-07-01), Nordahl
patent: 3675131 (1972-07-01), Pickholtz
patent: 3745255 (1973-07-01), Fletcher et al.
patent: 3768030 (1973-10-01), Brown et al.
patent: 3787775 (1974-01-01), Lanning
patent: 3806815 (1974-04-01), Fletcher et al.
patent: 4011438 (1977-03-01), Aufderheide et al.
patent: 4021743 (1977-05-01), Claxton
patent: 4027265 (1977-05-01), Kobayashi et al.
patent: 4069462 (1978-01-01), Dunn

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