Title:
MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/212048
Kind Code:
A1
Abstract:
A multiplexer (10) comprises a common terminal (100c), a filter (21) corresponding to Band 41, a filter (22) corresponding to Band 40, and a filter (23) corresponding to Band 1Rx. A matching circuit (11) comprises: a capacitor (C1) provided on a path (111); a switch (SW1) connected between the ground and a node on the path (111) between the capacitor (C1) and the filter (21); a resonant circuit provided on a path (112) and having, within the band of Band 40, a resonant frequency at which the impedance is a minimum; a switch (SW2) connected between the ground and a node on the path (112) between the resonant circuit and the filter (22); an inductor (L1) provided on a path (113); and a switch (SW3) connected between the ground and a node on the path (113) between the inductor (L1) and the filter (23).
Inventors:
MORI HIROTSUGU (JP)
Application Number:
PCT/JP2018/018020
Publication Date:
November 22, 2018
Filing Date:
May 09, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/46; H03H9/54; H03H9/64; H03H9/72; H04B1/00; H04B1/18
Domestic Patent References:
| WO2016030942A1 | 2016-03-03 | |||
| WO2017006867A1 | 2017-01-12 | |||
| WO2016208670A1 | 2016-12-29 |
Foreign References:
| JP2013243600A | 2013-12-05 | |||
| JP2012519445A | 2012-08-23 | |||
| JPH1155067A | 1999-02-26 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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