Patent ID: 6255903
Filing Date: 2001-07-03
Classification: H03F

Abstract:
A linear power amplifier comprising:at least one main amplifier circuit having a first input and a first output and at least one power amplifier;at least a first error correction circuit operatively coupled to the main amplifier circuit to provide feedforward error correction, wherein the at least first error correction circuit includes at least a first feedforward error amplifier having a second input and a second output;a control circuit, operatively coupled to remove power from at least one of: the at least one power amplifier and the at least first feedforward error amplifier, in response to a power reduction condition; anda first switch operatively controllable by the control circuit wherein the control circuit removes power from the at least one power amplifier through the first switch and also adjusts at least a gain and a phase of a signal associated with the at least first error correction circuit to configure the at least first error correction circuit as a temporary main amplifier circuit in response to the power reduction condition.