Phase-locked loop for stably adjusting frequency-band of...

Details Phase-locked loop for stably adjusting frequency-band of... Phase-locked loop for stably adjusting frequency-band of...

2006-11-13

2008-12-30

Mis, David (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular error voltage control

C331S025000, C331SDIG002

Reexamination Certificate

active

07471159

ABSTRACT:
A phase-locked loop (PLL) for stably adjusting a frequency band of a voltage-controlled oscillator and a phase locking method. In the PLL, a frequency band controller alters the frequency band selection digital value in response to an input clock signal and an oscillation control signal generated from an LPF of a basic PLL circuit, and thus a voltage-controlled oscillator of the basic PLL circuit alters the frequency of an output clock signal in response to the oscillation control signal and the frequency band selection digital value. The output clock signal is rapidly and stably phase-locked at a target frequency depending on the frequency band selection digital value.

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