| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a booster capable of suppressing frequency shift or deterioration in communication distance by a nearby metal body. <P>SOLUTION: The booster is provided between an RFID and an RFID reader, and has an area relatively larger than a coupling coil inside the RFID. The booster includes: coils (booster coils 30, 31) which magnetically couple the RFID reader and the coupling coil; a magnetic material 66 arranged at a position opposing to the RFID across the coils, and overlapped with the coupling coil in a plane view; and a magnetic material 67 arranged at a position opposing to the RFID reader across the coils, and overlapped with the coil in the plane view. The magnetic material 67 has a clipping part 67a at a position overlapped with the coupling coil in the plane view. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
