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Patent Searching and Data


Title:
VARIABLE CAPACITOR
Document Type and Number:
Japanese Patent JP2010109035
Kind Code:
A
Abstract:

To provide a variable capacitor which reduces loss in conductivity as a component formed by combining a capacitor for cutting low frequency signal and a variable capacitor.

The variable capacitor includes (a) a pair of electrode layers 22, 26, (b) a dielectric material layer held between the pair of electrode layers 22, 26 to change dielectric constant with application of a control voltage, and (c) a plurality of capacitors 6, 8 formed of the pair of electrode layers 22, 26 and the dielectric material layer. The capacitors 6, 8 respectively include at least one variable capacitor 6 changing capacitance with application of the control voltage and at least one capacitor 8 for cutting low frequency signal other than the variable capacitor 6. At least one capacitor 8 for cutting the low frequency signal is formed in the external side of the relevant variable capacitor 6 to surround the external circumference of at least one variable capacitor 6.


Inventors:
Nakaiso, Toshiyuki
Application Number:
JP2008000277888
Publication Date:
May 13, 2010
Filing Date:
October 29, 2008
Export Citation:
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Assignee:
MURATA MFG CO LTD
International Classes:
H01G7/06
Attorney, Agent or Firm:
山本 俊則