Method for operating an antenna driver fixed in a motor vehicle, operates through a keyless access control device linked to a motor vehicle

摘要

Operating voltage (UB) supplied by a source (1) of power in a motor vehicle is converted into a higher voltage supply (UV) for an antenna resonance circuit (2). A supply of current flowing in the antenna resonance circuit is controlled for the antenna resonance circuit until it reaches a set point value in the intensity of current supply (IV). An Independent claim is also included for a circuit structure designed as an antenna driver fixed in a motor vehicle i.e. in a keyless access control device with a source of power and an antenna resonance circuit.