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Antenna device and communication apparatus

  • US 9,917,367 B2
  • Filed: 01/13/2016
  • Issued: 03/13/2018
  • Est. Priority Date: 07/16/2013
  • Status: Active Grant
First Claim
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1. An antenna device comprising:

  • magnetic layers;

    a power supply coil provided on or in the magnetic layers with a winding axis coinciding with a lamination direction of the magnetic layers; and

    a first antenna coil and a second antenna coil that are provided on or in the magnetic layers with winding axes coinciding with the lamination direction of the magnetic layers and that generate magnetic field coupling to the power supply coil;

    whereinthe power supply coil is located on an inner portion relative to the first antenna coil and the second antenna coil when seen in the lamination direction; and

    at least portions of the first antenna coil and the second antenna coil are located on outer portions relative to the power supply coil in the lamination direction.

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