Contactless communication repeater remote power device for a motor vehicle door handle

A device for a handle of a motor vehicle door, said device comprising a primary module integrated into the door and a secondary module integrated into the handle, the primary module comprising a primary coil and the secondary module comprising a secondary coil arranged facing said primary coil,

• the primary module being configured to form an electromagnetic field suitable for supplying electric power to the secondary module by magnetic induction between the primary coil and the secondary coil,
• the primary module comprising a communication circuit suitable for exchanging information with a terminal by the primary coil,
• the secondary module comprising a communication circuit suitable for exchanging information with the terminal and the primary module by the secondary coil, and configured to repeat to the primary module the information sent by the terminal and intended for said primary module, and/or to repeat to the terminal the information sent by the primary module and intended for said terminal,
• wherein the handle is retractable with respect to the door, in which device the primary coil and the secondary coil remain facing each other when the handle moves between a retracted position and a deployed position with respect to the door and the secondary module furthermore comprises a control circuit configured to measure a parameter representative of an amplitude of the magnetic field flux generated by the primary coil through the secondary coil, in order to estimate, depending on said measurements, the position of the handle during its movement between the retracted position and the deployed position.