Oscillators – With particular source of power or bias voltage – Regulated
Reexamination Certificate
2005-12-20
2005-12-20
Chang, Joseph (Department: 2817)
Oscillators
With particular source of power or bias voltage
Regulated
C327S540000
Reexamination Certificate
active
06977558
ABSTRACT:
A self-adaptive voltage regulator for a phase-locked loop is disclosed. The phase-locked loop includes a phase detector, a charge pump, a low pass filter, and a voltage control oscillator, wherein the low pass filter inputs a control voltage to a voltage controlled oscillator for generation of an output clock. According to the method and system disclosed herein, the self-adaptive voltage regulator is coupled to an output of the low pass filter for sensing the control voltage during normal operation of the phase-locked loop, and for dynamically adjusting the supply voltage, which is input to the voltage controlled oscillator in response to the control voltage, such that the phase-locked loop maintains the control voltage within a predefined range of a reference voltage.
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Cranford, Jr. Hayden C.
Garvin Stacy J.
Norman Vernon R.
Rasmus Todd M.
Seidel Peter R.
Chang Joseph
International Busines Machines Corporation
Sawyer Law Group LLP
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