ATTACHMENT TYPE BOOSTER ANTENNA AND READER/WRITER USING THE SAME

摘要

To provide an attachment type booster antenna capable of reading a small loop antenna of an RFID tag without providing a plurality of readers/writers.SOLUTION: An attachment type booster antenna capable of being attached to a coil antenna includes a main body portion and an antenna portion in which a plurality of resonant antennas is arrayed in the main body portion. The resonant antenna includes: an insulation layer having a first surface and a second surface; and first and second loop antennas disposed on the first surface and the second surface, respectively, so as to face each other via the insulator layer to have an opening cutting out a part of each of the loop, the first and second loop antennas being disposed in a manner such that a closed loop is formed by at least a part of the first loop antenna and at least a part of the second antenna on a transparent surface when being viewed from a normal direction of the insulator layer. The openings of the frist and the second loop antenna overlap with the opening of the coil antenna in a plan view of the insulator layer.SELECTED DRAWING: Figure 1