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Patent Searching and Data


Title:
WIRELESS COMMUNICATION MODULE
Document Type and Number:
WIPO Patent Application WO/2019/208173
Kind Code:
A1
Abstract:
In the present invention, a power source circuit includes a switching element that is connected to a current path between an input terminal and an output terminal, and a smoothing capacitor that is connected between the output terminal and ground. A bypass capacitor is connected between the input terminal and ground. An antenna element shares the ground with the power source circuit. A frequency filter with the operating frequency band of the antenna element set as the blocking range is inserted, in series, into at least one of: the current path between the switching element and the smoothing capacitor; and the current path between the bypass capacitor and the switching element. A reduction in wireless communication quality resulting from noise generated by a DC/DC converter can be mitigated.

Inventors:
ONO, Akihiro (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
ISHIWATA, Yu (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2019/015150
Publication Date:
October 31, 2019
Filing Date:
April 05, 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:
H04B1/40; H02M3/155; H03H7/075
Domestic Patent References:
WO2017163481A12017-09-28
Foreign References:
JP2004364394A2004-12-24
JP2004187446A2004-07-02
Attorney, Agent or Firm:
KITAYAMA, Mikio et al. (OWA PATENT FIRM, Tokyo Office 801 Kyodo Building, 3-6, Kanda-Nishikicho, Chiyoda-k, Tokyo 54, 〒1010054, JP)
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