Patent ID: 8160517
Filing Date: 2012-04-17
Classification: H03F,H03G,H04B

Abstract:
1. 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 by applying a switching control transfer function to 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, and the switching control transfer function having values determined based on a characterization of the response of the detector, control curves of the switched mode power supply, and a response of the power amplifier to input drive; 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.