Title:
MULTIPLEXER
Document Type and Number:
WIPO Patent Application WO/2022/071186
Kind Code:
A1
Abstract:
This multiplexer (1) comprises: a common terminal (tc); a first terminal (t1) and a second terminal (t2); a first filter circuit (10) provided on a first path (r1) connecting the common terminal (tc) and the first terminal (t1); and a second filter circuit (50) provided on a second path (r2) connecting the common terminal (tc) and the second terminal (t2). The first filter circuit (10) has a plurality of parallel arm resonators (P1-P4). In a pass band of the second filter circuit (50), the resistance (Zr) of a single parallel arm resonator (P1), closest to the common terminal (tc) among the plurality of parallel arm resonators (P1-P4), is the lowest.
Inventors:
OZASA MOTOKI (JP)
Application Number:
PCT/JP2021/035267
Publication Date:
April 07, 2022
Filing Date:
September 27, 2021
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145; H03H9/72
Domestic Patent References:
| WO2019131501A1 | 2019-07-04 | |||
| WO2018043606A1 | 2018-03-08 | |||
| WO2018043607A1 | 2018-03-08 |
Foreign References:
| JPH10209806A | 1998-08-07 | |||
| JP2016184900A | 2016-10-20 | |||
| JP2011087282A | 2011-04-28 | |||
| JP2017204743A | 2017-11-16 | |||
| JPH11251871A | 1999-09-17 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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