Self-tuning varactor system

Details Self-tuning varactor system Self-tuning varactor system

2005-12-13

2005-12-13

Mis, David (Department: 2817)

Oscillators

With frequency adjusting means

With voltage sensitive capacitor

C331S014000, C331S017000, C331S018000, C331S03600C, C331S002000

Reexamination Certificate

active

06975176

ABSTRACT:
In one embodiment, the present invention provides a system including a varactor and a voltage generator. The varactor includes a set of substantially equal voltage-tunable capacitor cells, each having a capacitive range that varies with a first plurality of operating parameters and each providing a capacitance within the range based on a voltage level of a reference voltage. The voltage generator is configured to provide the reference voltage, wherein the voltage level of the reference voltage corresponds to a desired capacitance within the capacitive range and varies based on a second plurality of operating parameters which are substantially the same as the first plurality of operating parameters, and wherein the voltage level of the reference voltage causes each capacitor cell to provide the desired capacitance.

REFERENCES:
patent: 5302919 (1994-04-01), Abe
patent: 5594388 (1997-01-01), O'Shaughnessy et al.
patent: 5696468 (1997-12-01), Nise
patent: 6114920 (2000-09-01), Moon et al.
patent: 6133797 (2000-10-01), Lovelace et al.
patent: 6175282 (2001-01-01), Yasuda
patent: 6323736 (2001-11-01), Jansson
patent: 6504437 (2003-01-01), Nelson et al.
patent: 6552618 (2003-04-01), Nelson et al.
patent: 6566966 (2003-05-01), Bellaouar et al.

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