Low jitter and wide-range frequency synthesizer for low...

Details Low jitter and wide-range frequency synthesizer for low... Low jitter and wide-range frequency synthesizer for low...

2010-02-18

2011-11-29

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular error voltage control

C331S183000, C331S034000, C331S016000

Reexamination Certificate

active

08067988

ABSTRACT:
A low jitter and wide-range frequency synthesizer for low voltage operation includes a detector to generate a detection signal based on a logic level difference between an input signal and a feedback signal, a charge pump to generate a control signal based on the detection signal, a filter to generate a tuning signal based on the control signal, a bias circuit to generate a first bias signal and a second bias signal based on the tuning signal, a controllable oscillator to generate a differential output signal based on the first and the second bias signals, a differential to single ended converter to convert the differential output signal into an output signal, and a programmable frequency divider to generate the feedback signal based on the output signal.

REFERENCES:
patent: 6522208 (2003-02-01), Knowles
patent: 6535070 (2003-03-01), Hwang et al.
patent: 6542040 (2003-04-01), Lesea
patent: 419899 (2001-01-01), None

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