Patent ID: 8022886

Claim:
A crossed dual tag apparatus, including first and second tags, each on one plane, each of the first and second tags being substantially planar and comprising: a dipole antenna which is formed with conductors and includes two dipole units, the two dipole units being arranged in line symmetry; a feeding part to which an IC chip is connected at a center of the dipole antenna; and a loop-shaped inductance part that is formed so as to surround the feeding part between the two dipole units, and connected to the two dipole units in parallel with respect to the feeding part, wherein the first and the second tags are crossed orthogonally so that loops of the inductance parts overlap, the inductance part of the first tag and the inductance part of the second tag are positioned where the first and the second tags are crossed, and when one of the first and second tags receives a circular polarized radio wave from an antenna of a reader/writer, the one tag operates and a current flows into the loop of the inductance part of the one tag, and another tag which makes high-frequency coupling with the one tag operates with a phase delayed by 90°, thereby generating a circular polarized wave.