Title:
ANTENNA DEVICE AND ELECTRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/195553
Kind Code:
A1
Abstract:
This antenna device (101) comprises: a first feeding coil (31) connected to a feeding circuit; a second feeding coil (32) connected to the feeding circuit; a first resonance circuit including a first current path formed of a conductor pattern, which is magnetically coupled to the first feeding coil (31); and a second resonance circuit including a second current path formed of a conductor pattern, which is magnetically coupled to the second feeding coil (32). The resonance frequency of the first resonance circuit and the resonance frequency of the second resonance circuit are equal to the extent that the frequency characteristics of the impedance magnitudes of the first resonance circuit and the second resonance circuit viewed from the power feeding circuit are unimodal.
Inventors:
YAMAMOTO MASAYOSHI (JP)
Application Number:
PCT/JP2020/008512
Publication Date:
October 01, 2020
Filing Date:
February 28, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G06K19/077; H01Q5/35; H01Q7/06; H01Q13/10; H01Q19/02; H01Q21/29
Domestic Patent References:
| WO2007060792A1 | 2007-05-31 |
Foreign References:
| US20170346163A1 | 2017-11-30 | |||
| JP2001085927A | 2001-03-30 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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