Patent ID: 8606199

Claim:
A control system for a transmitter of a wireless device, the transmitter having a pre-amplifier and a power amplifier coupled to an output of the pre-amplifier, the control system comprising: a signal input for receiving a detection signal representative of a pre-amplified transmission signal sensed at the output of the pre-amplifier by a detector; a switching regulator control block configured to generate a switching supply control signal based on the received detection signal, the switching supply control signal comprising control values for a switched mode power supply configured to generate a supply voltage signal for the power amplifier in response to the switching supply control signal, the control values being generated to hold the power amplifier in a state of constant compression so that the effects of the compression of the power amplifier are a constant function of transmission power; and a signal output for providing the switching supply control signal to the switched mode power supply; wherein, in operation, the switching regulator control block communicates with the detector using the signal input and with the switched mode power supply using the signal output.