Method and apparatus for noise compensation in an oscillator...

Details Method and apparatus for noise compensation in an oscillator... Method and apparatus for noise compensation in an oscillator...

2007-08-07

2007-08-07

Pascal, Robert (Department: 2817)

Oscillators

With parasitic oscillation control or prevention means

C331S03600C, C331S1170FE, C331S17700V

Reexamination Certificate

active

11004022

ABSTRACT:
A variable capacitance circuit includes a first and a second capacitor. A switch having an associated first nonlinear capacitance, selectively couples the first and second capacitors. To compensate for the first nonlinear capacitance, a second nonlinear capacitance is coupled to the switch that has a capacitance value responsive to a change in voltage that moves in a direction of change opposite to a direction of change of the first nonlinear capacitance.

REFERENCES:
patent: 5694092 (1997-12-01), Oba et al.
patent: 6545555 (2003-04-01), Justice et al.
patent: 6803829 (2004-10-01), Duncan et al.
patent: 6853262 (2005-02-01), Feilkas et al.
patent: 7116183 (2006-10-01), Wu
U.S. Appl. No. 11/085,404, filed Mar. 21, 2005, entitled Push Compensation in an Oscillator, by Ligang Zhang.

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