Section selection loop filter and phase locked loop circuit...

Details Section selection loop filter and phase locked loop circuit... Section selection loop filter and phase locked loop circuit...

2006-04-18

2006-04-18

Nguyen, Linh My (Department: 2816)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C327S147000

Reexamination Certificate

active

07030705

ABSTRACT:
A section selection loop filter for use in a phase lock loop for reducing sizes of hardware and increase ranges of tuning, including a selection signal outputting part for setting a first to fourth sections according to an input tuning voltage, selecting a first to fourth selection signals corresponding to the first to fourth sensing sections respectively, and outputting the first to fourth selection signals to a filtering part, and a filtering part for receiving and filtering a charge-pumping signal from a charge pump based on the four selection signals for the four sensing sections.

REFERENCES:
patent: 5107220 (1992-04-01), Andoh
patent: 6819197 (2004-11-01), Maldonado
patent: 2002-368612 (2002-12-01), None

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