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Patent Searching and Data


Title:
ANTENNA DEVICE, COMMUNICATION SYSTEM, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/176637
Kind Code:
A1
Abstract:
This antenna device reduces mutual interference between a first coil conductor and a second coil conductor. The antenna device (1) is provided with a first coil conductor (3) and a second coil conductor (4). The second coil conductor (4) includes a first conductor part (41) and a second conductor part (42). The first conductor part (41) is arranged outside of the outermost periphery of the first coil conductor (3) seen from the winding axis direction of the first coil conductor (3), and is provided to surround the region of formation of the first coil conductor (3). The second conductor part (42) is connected to the first conductor part (41), is wound so as to have a second opening (48), is arranged so as to be at least partially outside of the outermost periphery of the first coil conductor (3) seen from the winding axis direction of the first coil conductor (3), and is arranged such that at least part of the second opening (48) is outside of the region of formation of the first coil conductor (3). The second conductor part (42) has a section that is farther from the first coil conductor (3) than the first conductor part (41).

Inventors:
ICHIKAWA, Keiichi
Application Number:
JP2019/008540
Publication Date:
September 19, 2019
Filing Date:
March 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:
H01Q7/00; H01F38/14; H01Q1/52; H01Q21/28; H02J7/00; H02J50/12; H02J50/40
Domestic Patent References:
WO2017094466A12017-06-08
WO2013157191A12013-10-24
Foreign References:
JP2013138404A2013-07-11
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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