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Patent Searching and Data


Title:
ANTENNA DEVICE, COMMUNICATION SYSTEM, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/176636
Kind Code:
A1
Abstract:
In this antenna device, decreases in communication distance are suppressed while preventing a circuit configuration from becoming complex. In the antenna device (1), a first inductor (2) is electrically connected to a first system circuit (71). A second inductor (3) is connected to the first inductor (2). The first inductor (2) and the second inductor (3) are connected in series with a second system circuit (72). With respect to the first system circuit (71), the second inductor (3) and a parallel resonance circuit (5) are connected in parallel with the first inductor (2). The parallel resonance circuit (5) resonates at a parallel resonance frequency lower than the first communication frequency of the first system circuit (71).

Inventors:
ICHIKAWA, Keiichi
Application Number:
JP2019/008539
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; H01Q1/50; H01Q5/35
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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