Variable capacitor

Details Variable capacitor Variable capacitor

2005-10-04

2005-10-04

Reichard, Dean A. (Department: 2831)

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

C361S278000, C361S283300, C361S281000, C361S290000, C361S292000

Reexamination Certificate

active

06952337

ABSTRACT:
A variable capacitor is provided such that it is possible to make nonlinear distortion small and use at high power handling capability, and such that a variable rate of capacitance is not influenced by a high-frequency voltage substantially. A variable capacitor is used by changing capacitance through application across electrodes of direct current voltage and high-frequency voltage. When an effective voltage value of high-frequency voltage is within a range of voltage values of direct current voltage, there is substantially no fluctuation caused by application of high-frequency voltage with respect to a change of capacitance caused by application of direct current. Since it is possible to decrease susceptibility to the high-frequency voltage of the variable capacitor, it is possible to obtain a variable capacitor such that nonlinear distortion is small and power handling capability is high.

REFERENCES:
patent: 6543286 (2003-04-01), Garverick et al.
patent: 6690251 (2004-02-01), Toncich
patent: 6705165 (2004-03-01), Garverick et al.
patent: 6833985 (2004-12-01), Fujii et al.
patent: 6856499 (2005-02-01), Stokes
patent: 11-260667 (1999-09-01), None

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