| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an RFID tag ensuring desired communication distance even when directly adhered on a metal part whose surface is planar or curved. <P>SOLUTION: Flexible inlet 1 with a main antenna 3, mounted with an IC chip 4, and laminated by an envelope film 5 is adhered on a metal plate 6. On the surface of the inlet 1, an auxiliary antenna 7 of approximately the same size as the inlet 1 is mounted. In the vicinity of the central part, the auxiliary antenna 7 is tightly adhered on the surface of the inlet 1 at the center and is curved as separating from the surface of the inlet 1 toward the both ends of the longitudinal direction of the inlet 1. By forming the auxiliary antenna 7 in the curved shape, at the both ends of the inlet 1 where electric field intensity is high, a gap (a) is formed, accordingly radio wave from the inlet 1 is amplified by the auxiliary antenna 7 and is emitted to the outside. Consequently, the communication distance of an RFID tag 10 is remarkably extended. <P>COPYRIGHT: (C)2008,JPO&INPIT |
