Patent ID: 7542003

Claim:
A contactless label designed to ensure the traceability of an object comprising a microcircuit and a Y-shaped antenna connected to said microcircuit, the memory of said microcircuit containing information necessary for tracing said object, said information being read with a reader through the exchange of ultra high frequency (UHF) electromagnetic waves; wherein said antenna is a dipole type antenna made up of three main wires, a first main wire, a second main wire forming a first dipole with said first main wire and a third main wire forming a second dipole with said first main wire, said main wires being placed in such a way that the angle between said first and second main wires is equal to the angle between said first and third main wires and the angle between said second main wire and said third main wire being between 60° and 180°, and each of said main wires including at its end a secondary wire perpendicular to the main wire and whose length is between 10 mm and 50 mm.