Radiofrequency communication module for a tire

A radiofrequency communication module or semi-finished product able to be integrated into the structure of a tire, the radiofrequency communication module comprising:

• a radiofrequency transponder embedded in an elastomer blend and comprising an electronic chip, a radiating antenna configured to communicate with a radiofrequency reader, and a primary antenna that is electrically connected to the electronic chip and electromagnetically coupled to the radiating antenna,
• wherein the radiating antenna consists of a single-strand helical spring,
• wherein the radiating antenna has a core made of steel coated with a conduction layer,
• wherein, the radiating antenna defining a first longitudinal axis, the primary antenna is a coil having at least one turn defining a second longitudinal axis that is circumscribed in a cylinder, an axis of revolution of which is parallel to the second longitudinal axis and a diameter of which is smaller than a diameter of the helical spring of the radiating antenna, and
• wherein the primary antenna is placed in an interior of the single-strand helical spring of the radiating antenna.