| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless communication system, which effectively prevents signal scattering and utilizes signals. <P>SOLUTION: A RFID system 1 comprises an interrogator 11, an interrogator antenna 12 connected to the interrogator 11 for transmitting a signal, a radio wave reflection plate 21 for including a parabolic curve or a part of the parabolic curve, which reflects the signal transmitted by the interrogator antenna 12, and a wireless tag 13 for receiving and responding to the signal from the interrogator antenna 12 at least via the radio wave reflection plate 21, to conduct communications with the interrogator 11. A signal, passing through without radiating on the wireless tag 13, is reflected towards the inside of the radio wave reflection plate 21 by the radio wave reflection plate 21. Therefore, signal scattering is prevented, and signals from the interrogator antenna 12 are utilized effectively. <P>COPYRIGHT: (C)2003,JPO |
