WIRELESS TAG READING APPARATUS AND METHOD FOR ARRANGING READER ANTENNA OF WIRELESS TAG READING APPARATUS

摘要

A wireless tag reading apparatus comprising: an electric field-type reader antenna which has an electromagnetic wave radiating side arranged toward a wireless tag for both near-field and far-field operation and which transmits and receives a signal to and from the wireless tag by an electric field; a magnetic field-type reader antenna which has an electromagnetic wave radiating side arranged toward the wireless tag from a different direction from the electromagnetic wave radiating side of the electric field-type reader antenna and not orthogonally to an antenna side of the wireless tag and which transmits and receives a signal to and from the wireless tag by a magnetic field; and an antenna switching unit which switches use of the magnetic field-type reader antenna and the electric field-type reader antenna.