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 that function as tag antennas and sizes differs; and a high-frequency coupling section that couples the power-supply element with...http://www.google.fr/patents/US8068057?utm_source=gb-gplus-shareBrevet US8068057 - RFID tag
