| 摘要 |
<p>This invention constructs an antenna matching circuit (16) able to avoid a bad influence when a conductor such as a metal, a tag, etc. approaches a reader/writer (11), and dissolves a communication defect area on the reader/writer side and stably maintains a communication distance.</p><p>In this invention, in a RFID system in which, when the tag corresponds to the generating area of a magnetic field generated in an antenna coil of the reader/writer (11), a radio wave for sending information to the reader/writer is outputted by operating a control circuit of the tag by electric power generated in an antenna coil of this corresponding tag, a conductor (17) is arranged near the antenna coil (15) of the reader/writer and an eddy current is intentionally flowed. Thus, the communication defect between the reader/writer and the tag approaching this reader/writer is reduced.</p> |
