RFID tag and manufacturing method thereof, impedance-adjusting method and resin sheet and manufacturing method therefor

摘要

An RFID tag has an antenna element including an antenna substrate equipped with an IC chip and a conductor pattern, an artificial medium, and a first insulation layer sandwiched between the antenna element and the artificial medium. The artificial medium has a single first conductive element placed on an upper surface of a dielectric layer and a single second conductive element placed on a lower surface of the dielectric layer.