Automotive vehicle with a low frequency communication system, used for hands-free control of various vehicle functions, e.g. starting of the engine on detection of the driver's presence in the vehicle

摘要

The vehicle has a passenger compartment (H) in which an transmission antenna (A1) is fixed, to transmit an electromagnetic field of a low frequency communication by electromagnetic coupling. It has another antenna (A2) for transmitting an electromagnetic field to the interior of the compartment, these antennae having different emission patterns (D1,D2), each one covering a part of the compartment of the vehicle and fed by a common pilot antenna.