RF TAG

To enable wireless communication over a plurality of different frequency bands by layering and arranging an auxiliary antenna on an inlay that includes an IC chip and an antenna, and making both the antenna of the inlay and the auxiliary antenna function effectively while protecting the inlay and the auxiliary antenna from external environment by housing the same in, for example, a predetermined housing. Provided is a RF tag that comprises: an inlay 10 including an IC chip 11 and an antenna 12; an auxiliary antenna 20 layered on the inlay 10 in an insulated state; and a housing 50 that houses therein said inlay 10 on which the auxiliary antenna 20 has been layered. The antenna 12 of the inlay 10 forms a loop part 11 a in the vicinity of the IC chip 11, and the auxiliary antenna 20 is arranged so as to overlap a portion of the loop part 11a, and is arranged along the length direction of the inlay 10 such that at least a portion of the antenna 12 of the inlay 10 is exposed.