Patent ID: 7873335

Claim:
Circuit for limitation of a supply current for an associated power control looped power amplifier, the circuit comprising: means adapted to sense a current representing a bias current fed to an output stage of the associated power amplifier, and to compare the sensed current and a predetermined reference current, means adapted to apply a signal to the power control loop of the associated power amplifier upon the sensed current exceeding the predetermined reference current so as to limit an internal control voltage of the power control loop thus limiting output power of the power amplifier; and a second current limitation circuit comprising: a VI converter adapted to generate an output current in response to an input voltage and a feed-back voltage representing the output current, the output current being generated by an output stage, and a current limitation circuit comprising means adapted to compare a voltage representing the feed-back voltage and a predetermined reference voltage, the current limitation circuit being operatively connected to the output stage of the VI converter so as to reduce the output current upon the voltage representing said feed-back voltage exceeding the reference voltage.