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Title:
MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/171971
Kind Code:
A1
Abstract:
A multiplexer (1) is provided with: a common terminal (P0); a first acoustic wave filter (10) that has a first input/output terminal (14) connected to the common terminal (P0), and that allows a first frequency band to pass therethrough; a second acoustic wave filter (20) that has a second input/output terminal (24) connected to the common terminal (P0), and that allows a second frequency band located on the high frequency side of the first frequency band to pass therethrough; an inductance element (13); and a first capacitance element (12). The first acoustic wave filter (10) has a parallel resonator (11) having one end connected to the first input/output terminal (14) and the other end connected to a ground electrode. The first input/output terminal (14) is connected to the common terminal (P0) via the inductance element (13). The first capacitance element (12) is connected between a ground electrode and a signal path between the one end of the parallel resonator (11) and the inductance element (13).

Inventors:
NANIWA, Yusuke (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
TANI, Masakazu (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2019/006564
Publication Date:
September 12, 2019
Filing Date:
February 21, 2019
Export Citation:
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Assignee:
2MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H03H9/72; H03H7/38; H03H9/145; H03H9/25
Domestic Patent References:
WO2016208670A12016-12-29
WO2017169514A12017-10-05
Foreign References:
JPH0998046A1997-04-08
JP2003283363A2003-10-03
JP2006333012A2006-12-07
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, 〒5320011, JP)
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