Abstract: An RFID tag includes an IC chip on which identification information is recorded, a loop-like conductor that is connected to the IC chip, and an antenna unit that includes two lattice-shaped antenna patterns connected to the loop-like conductor and extending away from each other from the loop-like conductor.

Abstract: An RFID includes a first conductive layer; a second conductive layer in which an antenna is formed; an insulating layer; and an IC chip. The antenna includes a first slot; a second slot facing the first slot; a coupling slot to couple the first slot with the second slot; a first adjustment slot coupled with one end of the first slot, and being wider than the first slot; a second adjustment slot coupled with another end of the first slot, and being wider than the first slot; a third adjustment slot coupled with one end of the second slot, and being wider than the second slot; a fourth adjustment slot coupled with another end of the second slot, and being wider than the second slot.

Abstract: An RFID tag includes an IC chip on which identification information is recorded, a loop-like conductor that is connected to the IC chip, and an antenna unit that includes two lattice-shaped antenna patterns connected to the loop-like conductor and extending away from each other from the loop-like conductor.