VCO with switchable varactor for low KVCO variation

Details VCO with switchable varactor for low KVCO variation VCO with switchable varactor for low KVCO variation

2007-05-22

2007-05-22

Mis, David (Department: 2817)

Oscillators

With frequency adjusting means

With voltage sensitive capacitor

C331S03600C, C331S1170FE, C331S179000

Reexamination Certificate

active

11084420

ABSTRACT:
A method and system for VCO with switchable varactor for low KVCO variation is provided. Aspects of a method for controlling a signal may comprise controlling an oscillating frequency of a time varying signal in a circuit, and controlling a change in the oscillating frequency based on switching of a plurality of varactors. The switching of the varactors may control a change in the oscillating frequency based on a control voltage. The method may further comprise minimizing a change in the rate of change in the oscillating frequency based on the switching of the varactors. Aspects of a system for controlling a signal may comprise circuitry that controls an oscillating frequency of a time varying signal in a circuit, and circuitry that controls a change in the oscillating frequency based on switching of a plurality of varactors. An executable computer program may cause a machine to execute steps as described above.

REFERENCES:
patent: 5648744 (1997-07-01), Prakash et al.
patent: 5739730 (1998-04-01), Rotzoll
patent: 6621362 (2003-09-01), Momtaz et al.
R. Castello, P. Erratico, S. Manzini, F. Svelto, “A ±30% Tuning Range Varactor Compatible with Future Scaled Technologies,” 1998 IEEE, pp. 34-35.

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