Patent ID: 8116701

Claim:
A circuit arrangement, comprising: a signal processing unit configured to process an input signal to form an analog output signal, the signal processing unit comprising a multiplier; and a regulation unit coupled to the signal processing unit, and configured to produce a digital regulation signal based on a level of the analog output signal for regulation of the analog output signal, and supply the digital regulation signal to a control input of the multiplier, wherein the signal processing unit comprises: a signal input configured to receive the input signal; a further digital/analog converter having an input side coupled to the signal input; a first filter connected downstream from the further digital/analog converter; a modulator having an input side coupled to an output of the first filter; and a power amplifier having an input side coupled to an output of the modulator, and configured to produce the analog output signal at an output side thereof, wherein the output side is configured to couple to an antenna, wherein the power amplifier comprises a detector, and wherein the regulation unit further comprises an analog/digital converter, wherein an output side of the detector is coupled to the analog/digital converter, and wherein the detector is configured to supply an analog detector signal to the analog/digital converter, and wherein an output side of the analog/digital converter is coupled to an input of a comparison circuit.