Patent ID: 6871050

Claim:
A circuit configuration for controlling the transmitting power of a battery-operated transceiver, the circuit configuration comprising: a battery for providing a supply voltage; a power stage for controllable amplification of a radio-frequency signal, said power stage having a gain; a comparison device, said comparison device having an input side for receiving a reference signal and a signal coupled to the supply voltage, said comparison device having an output aide for supplying a difference signal, said comparison device: outputting the difference signal with a zero-amplitude, when an amplitude of the signal coupled to the supply voltage is above an amplitude of the reference signal; outputting the difference signal with an amplitude different from the zero-amplitude of the difference signal in the positive direction, when the amplitude of the signal coupled to the supply voltage lies below the amplitude of the reference signal; a control device for controlling the gain of said power stage in dependence on the difference signal; and a digitally operating functional unit supplied by the supply voltage, said functional unit generating a switching-off signal in dependence on the supply voltage for switching off the transceiver.