Patent ID: 7365697
Filing Date: 2008-04-29
Classification: H01Q

Abstract:
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, wherein the 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, and the reinforce frame is made of a material having a Young' modulus higher than that of the resin of the coil case.