| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce an influence of an eddy current generated by tight contact or close approach of a metallic object for securing generated magnetic flux for good electromagnetic coupling between a reader/writer antenna for an IC tag and the IC tag. <P>SOLUTION: Wires 21 and 22 formed on the front and back faces of an insulated board 10 are connected to each other via a plurality of through holes 31 and 32 arranged in the insulated board to be formed into a coil continuing spirally. In this way, stable communication with the IC tag can be realized even if an antenna coil for a reader/writer is brought into tight contact with or brought close to metal. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
