| 摘要 |
<P>PROBLEM TO BE SOLVED: To configure a wireless IC device having improved transmission efficiency of a signal with an antenna of a reader/writer by reducing the entire size and improving an emission property. <P>SOLUTION: In this wireless IC device 10, a power supply circuit board 4 and a wireless IC chip 5 mounted thereon constitute an electromagnetic coupling module 1, a linear conductor 2 parallel with a central axis of a spiral is disposed inside a spiral conductor 7, one ends of the respective spiral conductor 7 and linear conductor 2 are connected to power-supply conductors 8a, 8b, and the other ends of the spiral conductor 7 and the linear conductor 2 are respectively opened. The wireless IC device 10 is configured by molding the spiral conductor 7, the linear conductor 2, and the power-supply conductors 8a, 8b by a mold resin 9, and attaching the electromagnetic coupling module 1 comprising the power supply circuit board 4 and the wireless IC chip 5 on the upper face thereof. <P>COPYRIGHT: (C)2009,JPO&INPIT |
