Title:
VARIABLE FILTER CIRCUIT, HIGH-FREQUENCY MODULE CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/125515
Kind Code:
A1
Abstract:
Provided is a variable filter circuit with which it is possible to control the passband bandwidth and the center frequency and to minimize the total number of variable reactance parts. A variable filter circuit (10) provided with a serial arm (11) in which a plurality of circuit elements are serially connected relative to a signal path, and a parallel arm (12) in which a plurality of circuit elements are connected in parallel relative to the signal path, the serial arm (11) and the parallel arm (12) each including a variable reactance element, a resonating serial reactance element serially connected to the variable reactance element, and a resonating parallel reactance element connected in parallel to the variable reactance element.
Inventors:
MORI HIROTSUGU (JP)
Application Number:
PCT/JP2016/050181
Publication Date:
August 11, 2016
Filing Date:
January 06, 2016
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/12; H03H7/075; H03H7/09; H03H7/38
Foreign References:
| JP2010056735A | 2010-03-11 | |||
| JPH06224644A | 1994-08-12 | |||
| US5202656A | 1993-04-13 | |||
| JP2001512642A | 2001-08-21 |
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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