RFID tag

摘要

An RFID tag that has a tag antenna and a tag LSI comprising: a power-supply element in which the tag LSI is mounted on a power-supply section; a plurality of patch antennas (12a,b,c) that function as tag antennas and have different sizes; and a high-frequency coupling section (13) that couples the power-supply element with each of the patch antennas by high-frequency coupling.