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Patent Searching and Data


Title:
FILTER CIRCUIT AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/193826
Kind Code:
A1
Abstract:
This filter circuit (1) comprises: a filter (10a) positioned on a path (L1) linking a shared terminal (11) and an input/output terminal (12a), and has a first frequency band serve as a passing band; a filter (10b) positioned on a path (L2) linking the shared terminal (11) and an input/output terminal (12b), and has a second frequency band which is different from the first frequency band serve as a passing band; and a phase adjustment circuit (30), the input terminal (40a) of which is connected to the path (L1) and the output terminal (40b) of which is connected to the path (L2), and which adjusts the phase of a signal in the first frequency band input from the path (L1) and outputs a signal having a different phase from said signal to the output terminal (40b). The path (L1) and the path (L2) are paths through which reception signals pass.

Inventors:
YAMAMOTO, Michiyo (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2019/003799
Publication Date:
October 10, 2019
Filing Date:
February 04, 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:
H03H7/46; H03H7/38; H04B1/00; H04B1/18; H04B1/40
Domestic Patent References:
WO2018008274A12018-01-11
Foreign References:
JPS63191701U1988-12-09
JP2013098785A2013-05-20
JP2014096671A2014-05-22
JP2017204743A2017-11-16
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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