Patent ID: 7062234

Claim:
A method for reducing spurious emissions in an amplified signal, the method comprising the steps of: (a) amplifying a first copy of an input signal by a first amplifier sub-system; (b) amplifying one or more other copies of the input signal by one or more other amplifier sub-systems; (c) combining outputs from the first amplifier sub-system and the one or more other amplifier sub-systems to generate a combined amplified output signal, wherein the first amplifier sub-system: (1) applies pre-distortion to the first copy of the input signal to generate a pre-distorted first copy of the input signal, wherein the pre-distortion of the first copy of the input signal is based on the combined amplified output signal; and (2) amplifies the pre-distorted first copy of the input signal to generate the output from the first amplifier sub-system.