Title:
可変容量モジュールおよび整合回路モジュール
Document Type and Number:
Japanese Patent JP5218646
Kind Code:
B2
Abstract:
To inexpensively realize a small-sized variable capacitance module capable of certainly and inexpensively realizing necessary variable capacitance ranges. A variable capacitance circuit (11) includes a variable capacitance element (Cv3) and fixed capacitance elements (Ce1, Ce2). The variable capacitance element (Cv3) and the fixed capacitance element (Ce1) are connected in series to each other, and the series circuit thereof and the fixed capacitance element (Ce2) are connected in parallel to each other. Accordingly, with reference to the capacitance of the fixed capacitance element (Ce2), the range of the combined capacitance of the variable capacitance circuit is given by a step size ”C of capacitance based on the combined capacitance of the variable capacitance element (Cv3) and the fixed capacitance element (Ce1). At this time, the fixed capacitance elements (Ce1, Ce2) are realized using inner-layer flat-plate electrodes in a laminated substrate, and the variable capacitance element (Cv3) is realized using an MEMS element mounted on the top surface of the laminated substrate.
Inventors:
Tomohiro Nagai
Ken Tonegawa
Tetsuro Harada
Ken Tonegawa
Tetsuro Harada
Application Number:
JP2011507124A
Publication Date:
June 26, 2013
Filing Date:
March 25, 2010
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01G17/00; H01G5/16
Domestic Patent References:
| JPH07273547A | 1995-10-20 | |||
| JPS63204806A | 1988-08-24 | |||
| JP2008278147A | 2008-11-13 | |||
| JP2008117813A | 2008-05-22 | |||
| JP2000315915A | 2000-11-14 | |||
| JPH08172030A | 1996-07-02 | |||
| JP2008236386A | 2008-10-02 | |||
| JPH032624U | 1991-01-11 | |||
| JPH07273547A | 1995-10-20 | |||
| JPS63204806A | 1988-08-24 | |||
| JP2008278147A | 2008-11-13 | |||
| JP2008117813A | 2008-05-22 | |||
| JP2000315915A | 2000-11-14 |
Attorney, Agent or Firm:
Kaede International Patent Office