| 摘要 |
<p>A non-contact moving body identifying device provided with a responder (3) which is fixed to a moving body to be identified and, at the same time, writes or reads data in or from a built-in memory by demodulating a transmitted command signal and transmits a generated response signal after modulation, and an interrogator (2) which transmits the modulated command signal to the responder (3) by using a carrier, receives the transmitted response signal, and generates demodulated data. The interrogator (2) is provided with an extraction circuit (100) which extracts the frequency component of an original signal lower than the frequency of the carrier of the response signal based on the frequency of the carrier.</p> |
