| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that the miniaturization of an antenna is restricted because outermost circumference loop size is comparatively larger than innermost circumference loop size in the case of forming the antenna in a radio information storage medium capable of receiving information from the external in a non-contact state. <P>SOLUTION: A loop of N turns of winding in the same rotational direction is secured by alternately stacking two layers or more of conductive body parts and insulating body parts in the antenna and locally superposing and securing continuity between the 1st and 2nd layers, continuity between the 2nd and 3rd layers and continuity between the (N-1)th and Nth layers. <P>COPYRIGHT: (C)2004,JPO |
