Title:
FRONT-END MODULE AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/031307
Kind Code:
A1
Abstract:
This front-end module (1) is provided with a front-end circuit (4B) that propagates a signal in a band Ba in a CA mode, and a front-end circuit (4A) that propagates a signal in a band Bb, wherein the front-end circuit (4A) is provided with a quadplexer (70A) for the bands Ba and Bb, the front-end circuit (4B) is provided with a quadplexer (30B) for the bands Ba and Bb, and an impedance-variable circuit (40) connected to a band Bb transmission terminal of the quadplexer (30B). In the CA mode, the impedance-variable circuit (40) serves as a reflection circuit that reflects a band Bb transmission wave, and in a non-CA mode, the impedance-variable circuit (40) serves as a matching circuit that propagates or absorbs the band Bb transmission wave.
Inventors:
NAGUMO SHOJI (JP)
MOTOKI KANTA (JP)
OTOMO SHUNSUKE (JP)
MOTOKI KANTA (JP)
OTOMO SHUNSUKE (JP)
Application Number:
PCT/JP2018/028656
Publication Date:
February 14, 2019
Filing Date:
July 31, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04B1/00; H03H7/38; H03H7/46; H04B1/40
Domestic Patent References:
| WO2014010575A1 | 2014-01-16 |
Foreign References:
| JP2016501467A | 2016-01-18 | |||
| US20160233895A1 | 2016-08-11 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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