High Q linear controlled variable capacitor

Details High Q linear controlled variable capacitor High Q linear controlled variable capacitor

2007-09-04

2007-09-04

Sherry, Michael (Department: 2836)

Electrical transmission or interconnection systems

Capacitor

C307S110000, C327S532000

Reexamination Certificate

active

10764920

ABSTRACT:
A voltage controlled variable capacitor, formed of a larger number of fixed capacitor segments and a corresponding number of switching elements, linearly switches on each switching element, one after the other. Several techniques are disclosed to have only a minimum number of switching stages being in the active mode-of-change at any one time with a minimum overlap. The arrangement achieves a nearly linear change of capacitance versus tuning voltage change, while resulting in high Q-factor due to the low RDSon and high RDSoff of the fully switched stages.

REFERENCES:
patent: 4449141 (1984-05-01), Sato et al.
patent: 4456917 (1984-06-01), Sato et al.
patent: 5235335 (1993-08-01), Hester et al.
patent: 5514999 (1996-05-01), Koifman et al.
patent: 5949156 (1999-09-01), Groover
patent: 6013958 (2000-01-01), Aytur
patent: 6184594 (2001-02-01), Kushnarenko
patent: 6285095 (2001-09-01), Becker et al.
patent: 6356135 (2002-03-01), Rastegar
patent: 6437724 (2002-08-01), Nagaraj
patent: 6476682 (2002-11-01), Cole et al.
patent: 6577180 (2003-06-01), Liu
patent: 6882064 (2005-04-01), Glenn
patent: 6937098 (2005-08-01), Meusburger et al.
patent: 2003/0045069 (2003-03-01), Gilgen et al.
patent: 2004/0256917 (2004-12-01), Glenn
patent: 2005/0151574 (2005-07-01), Lin
patent: 2005/0151575 (2005-07-01), Sibrai et al.
patent: 0431887 (1990-12-01), None
patent: 0431887 (1991-06-01), None
patent: 62076801 (1987-04-01), None
patent: WO 01/06637 (2001-01-01), None
patent: WO 01/06637 (2001-01-01), None
Abstract/Zusammen fassung/Abrege 04368005.7.
“RF-CMOS Oscillators with Switched Tuning”, by Kral et al., IEEE 1998 Custom Integrated Circuits Conf., pp. 555-558.
Co-pending U.S. Patent D5-03-005B, U.S. Appl. No. 10/764,914, filed Jan. 26, 2004, “High Q Linear Controlled Variable Capacitor Using Translinear Amplifier”, assigned to the same assignees.

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