RF TAG AND RF TAG MANUFACTURING METHOD

摘要

Provided is a RF tag with which communication can be made prior to completion of the RF tag. The RF tag is provided with an integrated circuit connected to an antenna. The antenna is provided with a first radiating element, a second radiating element, a power feeding section connected in series between the first and the second radiating elements, and an impedance adjusting section connected in parallel to the power feeding section. An auxiliary radiating element connected to both of or one of the first and the second radiating elements is used for wireless communication with the integrated circuit prior to completion of the RF tag, and the auxiliary radiating element is not used for wireless communication after the completion of the RF tag. After the wireless communication is made by using the first, second and the auxiliary radiating elements, at least a part of the auxiliary radiating element is removed, and thereafter, the auxiliary radiating element does not make contribution to the wireless communication.