Non-contact label with y-shaped omnidirectional antenna

Contactless label designed to ensure the traceability of an object, which substantially comprises a microcircuit (16) and an antenna and connected to said microcircuit containing the memory of the microcircuit necessary for tracing the object information, can such information be read from a reader by exchanging electromagnetic waves ultra high frequency (UHF); said characterized label being that said antenna is a dipole antenna type comprises three main branches, a first main branch (10), a second main branch (12) forming a first dipole with said first main wire and a third main branch (14) forming a second dipole with said first main wire, said main arms so that the angle between said first and second main branches equals the angle between said first and third main branches and the angle between said second branch being arranged main and said third main wire being between 60 ° and 180 °, and each of said main branches comprises at its end a perpendicular to the main branch secondary branch (24, 26 or 28) and whose length is between 10 mm and 50 mm.