Current controlled oscillation device and method having wide...

Oscillators – Automatic frequency stabilization using a phase or frequency... – Tuning compensation

Reexamination Certificate

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Details

C331S017000, C331S018000, C331S034000, C327S157000

Reexamination Certificate

active

07355486

ABSTRACT:
A current controlled, phase locked loop device includes a phase detector configured to compare a reference frequency to an output frequency of a current controlled oscillator (ICO), a charge pump coupled to the phase detector and a low pass filter coupled to the charge pump. A voltage to current (V to I) converter is coupled to the low pass filter, providing an output current for integral control of the ICO. A control circuit is coupled to the ICO, and receives increment and decrement outputs of the phase detector, wherein the control circuit is configured to provide proportional control of the ICO through an amount of bias current applied thereto.

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patent: 2004/0135640 (2004-07-01), Maneatis
patent: 2005/0040898 (2005-02-01), Garvin
patent: 2006/0022760 (2006-02-01), Wu et al.

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