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Wireless IC device

  • US 8,720,789 B2
  • Filed: 08/28/2013
  • Issued: 05/13/2014
  • Est. Priority Date: 01/30/2012
  • Status: Active Grant
First Claim
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1. A wireless IC device comprising:

  • a wireless IC element;

    a power supply circuit substrate including a laminate of a plurality of base layers, and a power supply circuit connected to the wireless IC element; and

    a radiating element connected to the power supply circuit;

    whereinthe power supply circuit includes a first coil element connected in series with the wireless IC element, and a second coil element connected in parallel with the wireless IC element; and

    the first coil element and the second coil element are wound and arranged such that winding axes of the first and second coil elements coincide or substantially coincide with each other and directions of magnetic fields generated in the respective first and second coil elements are opposite to each other.

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