Patent ID: 7375626

Claim:
An arrangement of a magnetic coupling coil and a transponder circuit on a vehicle wheel for wireless communication with an interrogation circuit arranged on a fixed structure of the vehicle on which the wheel is mounted so as to be able to rotate about at least one rotational axis, the magnetic coupling coil, which is coaxially mounted to the rotational axis of the wheel and defines a closed loop, acting as an inductive coupling interface between an antenna coil of the transponder circuit and an excitation coil of the interrogation circuit, wherein the magnetic coupling coil comprises a loop portion oriented such that the magnetic field in the magnetic coupling coil, which is induced by a primary magnetic field generated by the excitation coil of the interrogation circuit, is directed in this loop portion in a perpendicular direction to the primary magnetic field, and wherein the antenna coil of the transponder circuit, which is arranged in the coupling coil loop or in proximity to and outside of the coupling loop portion, is oriented such that only the induced magnetic field of the coupling coil loop portion passes therethrough without being influenced by the primary magnetic field.