Abstract:
A radio IC-mounted article communicates in a microwave band or an ultrahigh frequency band, and is provided with: a substrate on which an IC chip and an antenna electrically connected to the IC chip are mounted; a first booster antenna electromagnetically coupled to the antenna; a second booster antenna electromagnetically coupled to the first booster antenna; and an article on which the substrate, the first booster antenna, and the second booster antenna are mounted.