Title:
MULTIPLEXER, HIGH-FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/030277
Kind Code:
A1
Abstract:
A multiplexer (1) is provided with: a first filter (10) that is any filter among a band pass filter, a low pass filter, or a high pass filter, and is provided on a first route that connects a common terminal (Port1) and a first terminal (Port2); and a second filter (20) that is a band elimination filter configured from one or more elastic wave resonators, and is provided on a second route that connects the common terminal (Port1) and a second terminal (Port3). The pass band of the first filter (10) and the attenuation band of the second filter (20) overlap, and ripples of a first resonator (201s) positioned closest to the common terminal (Port1) among one or more elastic wave resonators are generated only outside the pass band of the first filter (10) and the second filter (20).
Inventors:
KIDO SYUNSUKE (JP)
Application Number:
PCT/JP2017/028274
Publication Date:
February 15, 2018
Filing Date:
August 03, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/72; H03H7/46; H03H9/145; H03H9/64; H04B1/18
Domestic Patent References:
| WO2012176508A1 | 2012-12-27 | |||
| WO2010001522A1 | 2010-01-07 |
Foreign References:
| JP2001308676A | 2001-11-02 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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