ANTENNA FOR TAG COMMUNICATION, TAG COMMUNICATION DEVICE, TAG COMMUNICATION SYSTEM, SCAN ADJUSTING METHOD OF TAG COMMUNICATION DEVICE, AND SCAN ADJUSTMENT PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an antenna for tag communication which covers a wide communication area without any non-communication part by a small number of antennas having strong directivity.

SOLUTION: A FRID (Radio Frequency Identification) reader/writer 2 performs radio communication with a RFID tag 3 through radio waves. The antenna for tag communication used in the FRID reader/writer 2 is a beam scan antenna 40 that can scan beams of a radio wave to be transmitted. The beams have strong directivity in a scanning direction Sc. The beams are scanned so that a plane including the scanning direction Sc intersects a floor being a reflection plane that causes the strongest reflection wave.

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