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Patent Searching and Data


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 (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2019/005844
Publication Date:
October 03, 2019
Filing Date:
February 18, 2019
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H04B1/00; H03H7/46; H04B1/40
Domestic Patent References:
WO2017133808A12017-08-10
WO2016177617A12016-11-10
WO2015098791A12015-07-02
Foreign References:
US20140328220A12014-11-06
JP2016208484A2016-12-08
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, 〒5320011, JP)
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