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Card type wireless device, antenna coil, and method for manufacturing communication module

  • US 7,365,697 B2
  • Filed: 05/08/2006
  • Issued: 04/29/2008
  • Est. Priority Date: 05/31/2005
  • Status: Expired due to Fees
First Claim
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1. An antenna coil comprising:

  • an air-core type flat coil body having a thickness in an axial direction of the coil body;

    a coil case made of resin; and

    a reinforce frame, whereinthe thickness of the coil body is smaller than a radius of a circle, an area of which is equal to an area of a region surrounded with an outline of a projected coil body, the projected coil body provided by projecting the coil body on a projection plane perpendicular to the axial direction of the coil body,the coil case has a ring shape, which corresponds to the coil body,the coil case includes a coil accommodation space for accommodating the coil body,the coil accommodation space is disposed in a circumferential direction of the ring shape of the coil case,the coil case further includes a coil side terminal for mounting the coil body on a substrate with a solder member,the reinforce frame is integrated with the coil case along with the circumferential direction of the ring shape of the coil case, andthe reinforce frame is made of a material having a Young'"'"' modulus higher than that of the resin of the coil case.

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