Apparatus and method for frequency and phase acquisition

Details Apparatus and method for frequency and phase acquisition Apparatus and method for frequency and phase acquisition

2006-08-08

2006-08-08

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S558000

Reexamination Certificate

active

07088157

ABSTRACT:
An apparatus for frequency and phase acquisition has a voltage-controlled oscillator and a search generator with a forward path and a backward path for generating a search signal with a search frequency, the forward path of the search generator acting as a loop filter when the frequency is locked off. The search signal is symmetrized.

REFERENCES:
patent: 4388598 (1983-06-01), Egan
patent: 4486717 (1984-12-01), Yamasaki
patent: 5148123 (1992-09-01), Ries
patent: 5394115 (1995-02-01), Lampel
patent: 5414741 (1995-05-01), Johnson
patent: 5619484 (1997-04-01), Yokota et al.
patent: 6031427 (2000-02-01), Black
patent: 2000049601 (2000-02-01), None
Frequency Synthesis by Phase Lock, William F. Egan, John Wiley & Sons, Inc., 1981, S. 244-247, ISBN: 0-471-08202-3 (D4).

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