| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a booster antenna coil capable of enlarging even an electric current, while securing communication, and sufficiently increasing a communication distance. <P>SOLUTION: An RFID reader/writer 1 communicable with an RFID tag 3 by prescribed carrier frequency includes the booster antenna 2. A coupling resonance circuit is constituted so that a double-humped characteristics is generated by the P-coil 11 of the RFID reader/writer 1 and the Q-coil 21 of the booster antenna 2. One of the peaks in the double-hump characteristics is made to meet the carrier frequency. <P>COPYRIGHT: (C)2008,JPO&INPIT |
