Disclosed is a method for pulse width modulated control of a plurality of load elements, particularly during supply of the load elements from a common supply system in motor vehicles. A filter comprises an amplifier having an amplifier input and an amplifier output, wherein the amplifier is configured to produce an output signal at the amplifier output based on a signal at the amplifier input. The transmitter section is coupled to the RF antenna and operable to generate a transmit signal to be transmitted by the RF antenna. The first thickness is greater than the second thickness. The security thread, or at least a substrate of the security thread, is coextruded in the form of a thread strip in one of the films.