| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radio communication system which performs highly reliable read-write communication even though RFID tags are turned to random directions. <P>SOLUTION: The system has RFID tags 3 used for identification and a reader/writer 1 which transmits and receives information to and from the said RFID tags 3 by radio waves. Further, it has a plurality of reflectors 4 in a space S where a plurality of the RFID tags 3 are integrated. The reflectors 4 direct travelling directions of radio waves from the reader/writer 1 toward the RFID tags 3. Part of the radio waves emitted from an antenna 2 of the reader/writer 1 is induced to travel three-dimensionally toward the space S by the action of the reflectors 4. In addition, the radio waves turned to the same direction among radio waves reflected by the plurality of reflectors 4 are multiplied and attenuation caused by a distance is made extremely small. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
