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Title:
WIRELESS COMMUNICATION DEVICE AND SELF-MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2019/198474
Kind Code:
A1
Abstract:
The present invention reduces deterioration of reception sensitivity and deterioration of modulation characteristics of transmission during normal use. In this wireless communication device (1), a first switch is provided between an output terminal of a first power amplifier (31) and a first antenna part. A second switch is provided between a second antenna part and an input terminal of a second low-noise amplifier (42). A connection path (7) connects the first switch and the second switch. The connection path (7) has a damping part (71). The damping part (71) damps a first transmission signal output from the first power amplifier (31). The connection path (7) is independent from a first path (11) between the output terminal of the first power amplifier (31) and the first antenna part, and a second path (12) between the input terminal of the second low-noise amplifier (42) and the second antenna part. The first switch has a first self-measurement terminal (514), to which the connection path (7) is connected. The second switch has a second self-measurement terminal (524), to which the connection path (7) is connected.

Inventors:
KANASAKI, Eiji
SATO, Kazushige
ARAKI, Daisuke
OKAMOTO, Kazuya
KIMURA, Yumi
Application Number:
JP2019/012476
Publication Date:
October 17, 2019
Filing Date:
March 25, 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:
H04B17/19; H04B17/17; H04B17/29
Foreign References:
JP2003069477A2003-03-07
JP2015502708A2015-01-22
JPH10173547A1998-06-26
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (Umeda Square Bldg, 12-17 Umeda 1-chome, Kita-ku, Osaka-sh, Osaka 01, 〒5300001, JP)
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