Title:
CAPACITANCE TRIMMING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2015/098893
Kind Code:
A1
Abstract:
A capacitance trimming circuit (7) is provided with: a capacitance trimming unit (5); and a capacitance voltage division generating unit (6) which, when the electrostatic capacitance is to be adjusted by the capacitance trimming unit (5), applies a reference voltage (Vc) to one end of a first feedback capacitor (Cf1) to produce a voltage (V1) voltage-divided by a first capacitor (8), and applies a reference voltage (Vc) to one end of a second feedback capacitor (Cf2) to produce a voltage (V2) voltage-divided by a second capacitor (9).
Inventors:
TSUJI NOBUAKI (JP)
Application Number:
PCT/JP2014/084002
Publication Date:
July 02, 2015
Filing Date:
December 22, 2014
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G01P21/00; G01D5/241; G01P15/125; H03F3/343; H03F3/45
Domestic Patent References:
| WO2013102499A1 | 2013-07-11 | |||
| WO2013040508A1 | 2013-03-21 |
Foreign References:
| JP2011220764A | 2011-11-04 | |||
| JP2008102091A | 2008-05-01 | |||
| US20050218911A1 | 2005-10-06 |
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
Mutsumi Sameshima (JP)
Mutsumi Sameshima (JP)
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