Title:
VARIABLE CAPACITANCE ELEMENT, HIGH-FREQUENCY DEVICE, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/183472
Kind Code:
A1
Abstract:
Ferroelectric capacitors (C1-C6) are constituted as a serial circuit. A first end of the serial circuit is connected to a port (P11) and a second end is connected to a port (P12). Resistors (R31, R32, R33) constitute a first resistance voltage divider circuit (RDV1), and resistors (R34, R35) constitute a second resistance voltage divider circuit (RDV2). A voltage between a ground terminal (GND) and a common connection point (CC1) of the resistors (R31, R32, R33) is impressed as a control voltage for the ferroelectric capacitors (C1-C4). A voltage between the ground terminal (GND) and a common connection point (CC2) of the resistors (R34, R35) is impressed as a control voltage for the ferroelectric capacitors (C5, C6).
Inventors:
TAKESHIMA YUTAKA (JP)
NAKAISO TOSHIYUKI (JP)
NAKAISO TOSHIYUKI (JP)
Application Number:
PCT/JP2013/064578
Publication Date:
December 12, 2013
Filing Date:
May 27, 2013
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H5/00; G06K19/07; H01G7/06; H01L21/822; H01L27/04; H01Q5/10; H01Q7/00; H04B5/02
Domestic Patent References:
| WO2013062031A1 | 2013-05-02 | |||
| WO2013061985A1 | 2013-05-02 |
Foreign References:
| JP2005064437A | 2005-03-10 | |||
| JPH077366A | 1995-01-10 | |||
| JP2006295905A | 2006-10-26 | |||
| JPS5816934U | 1983-02-02 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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