Title:
VARIABLE CAPACITOR, VARIABLE CAPACITOR DEVICE, FILTER FOR HIGH-FREQUENCY CIRCUIT, AND HIGH-FREQUENCY CIRCUIT
Document Type and Number:
Japanese Patent JP2008159661
Kind Code:
A
Abstract:
To provide a wanted variable capacitance range by combining a plurality of capacitors while eliminating or decreasing the required number of switches.
The variable capacitor comprises a first electrode provided at a fixed part including a substrate, and a movable part comprising a second electrode with which the capacitance of the variable capacitor is formed together with the first electrode. The movable part selectively displaces in response to a first drive signal into a counter state that the second electrode faces the first electrode or into a non counter state that substantially causes no facing.
Inventors:
NISHIYAMA MADOKA
Application Number:
JP2006343991A
Publication Date:
July 10, 2008
Filing Date:
December 21, 2006
Export Citation:
Assignee:
NIKON CORP
International Classes:
H01G7/00; H01G5/16
Domestic Patent References:
JP2003243254A | 2003-08-29 | |||
JP2003209027A | 2003-07-25 | |||
JP2006346830A | 2006-12-28 | |||
JPH09199376A | 1997-07-31 |
Attorney, Agent or Firm:
Shinomiya Dori
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