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Antenna circuit, IC inlet, IC tag, and IC card, as well as manufacturing method of IC tag and manufacturing method of IC card

  • US 7,434,739 B2
  • Filed: 04/19/2006
  • Issued: 10/14/2008
  • Est. Priority Date: 04/25/2005
  • Status: Expired due to Fees
First Claim
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1. An antenna circuit, comprising:

  • a plurality of independent and non-electrically connected, coiled antenna circuits;

    a circuit supporting portion for supporting each antenna circuit and positioning the antenna circuits so that they are superposed; and

    a crease for guiding the circuit supporting portion so that the circuit supporting portion can be folded to superpose said antenna circuits, the crease including a break, a perforation, or a groove for guiding a folding of the circuit supporting portion,wherein the coiled antenna circuits are constructed so that each antenna circuit is superposed thereon by folding between the antenna circuits.

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