Interpolative varactor voltage controlled oscillator with...

Details Interpolative varactor voltage controlled oscillator with... Interpolative varactor voltage controlled oscillator with...

2006-10-31

2006-10-31

Kinkead, Arnold (Department: 2817)

Oscillators

With frequency adjusting means

With voltage sensitive capacitor

C331S1170FE, C331S1170FE, C331S03600C, C331S167000, C331S185000

Reexamination Certificate

active

07129801

ABSTRACT:
A tunable oscillator having a tuning voltage input includes an inductor, and first and second varactor pairs arranged with the inductor to generate a signal having a frequency responsive to a tuning voltage applied to the tuning voltage input, each of the varactor pairs having a bias voltage input that may be controlled independently of the other varactor pair. The first varactor pair may be biased such that its capacitance varies substantially linearly with the tuning voltage over a first portion of the tuning range, and the second varactor pair may be biased such that its capacitance varies substantially linearly with the tuning voltage over a second portion of the tuning range.

REFERENCES:
patent: 6292065 (2001-09-01), Friedman et al.
patent: 6774736 (2004-08-01), Kwek et al.
patent: 6885275 (2005-04-01), Chang
patent: 6906596 (2005-06-01), Kitamura et al.
patent: 6917248 (2005-07-01), Nguyen

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