Title:
HIGH-FREQUENCY FRONT-END CIRCUIT AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/187773
Kind Code:
A1
Abstract:
This high-frequency front-end circuit (1) is provided with: a diplexer (10); a reception filter (21R) having a passband corresponding to a band A1 of a low frequency-side band group; a reception filter (31R) having a passband corresponding to a band B1 of a high frequency-side band group; and a transmission/reception filter (41TR) having a passband overlapping a boundary band of the low frequency-side band group and the high frequency-side band group. The diplexer (10) includes: a low frequency-side filter (10L) connected to a common terminal (10a) and an input/output terminal (10b); and a high-frequency side filter (10H) connected to the common terminal (10a) and an input/output terminal (10c). The common terminal (10a) is connected to a common input/output terminal (100). The reception filter (21R) is connected to the input/output terminal (10b). The reception filter (31R) is connected to the input/output terminal (10c). The transmission/reception filter (41TR) is connected to the common input/output terminal (100) without passing through the diplexer (10).
Inventors:
KANI HIROYUKI (JP)
Application Number:
PCT/JP2019/005844
Publication Date:
October 03, 2019
Filing Date:
February 18, 2019
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04B1/00; H03H7/46; H04B1/40
Domestic Patent References:
| WO2017133808A1 | 2017-08-10 | |||
| WO2016177617A1 | 2016-11-10 | |||
| WO2015098791A1 | 2015-07-02 |
Foreign References:
| US20140328220A1 | 2014-11-06 | |||
| JP2016208484A | 2016-12-08 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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