Patent ID: 8049626

Claim:
An RFID tag mounting circuit board in which an RFID tag is mounted on a board, the RFID tag comprising: an IC chip storing information; an antenna connection terminal to which an antenna can be connected for sending the information stored in the IC chip by radio waves; and an impedance matching circuit for the antenna, wherein the impedance matching circuit is composed of a through hole pattern in the RFID tag mounting circuit board and printed patterns on upper and lower surfaces of the RFID tag mounting circuit board, wherein the through hole pattern connects the printed patterns on the upper and lower surfaces of the RFID tag mounting circuit board to each other, wherein a length of the printed pattern on the lower surface of the RFID tag mounting circuit board is varied in order to provide impedance matching, and wherein the antenna connection terminal is arranged such that the antenna is connected so as to extend perpendicularly to the RFID tag mounting circuit board.