Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier

A method for correcting amplitude and phase distortion of an RF power amplifier comprising:

• (a) performing RF amplifier distortion measurements upon a digitized baseband input signal that is exclusive of RF amplifier distortion and is representative of the complex waveform of a signal to be up-converted and amplified by said RF power amplifier and upon a digitized baseband output signal representative of the complex waveform of an amplified output signal derived from said RF power amplifier, so as to generate complex weights representative of said amplitude and phase distortion of said RF power amplifier;
• and
• (b) performing at least one of
• predistorting said digitized baseband input signal to be converted to analog format, up-converted from baseband, and applied to said RF power amplifier, in accordance with a first complex weight selected in accordance with an input signal to be amplified by said RF power amplifier, and
• modifying said digitized baseband input signal in accordance with a second complex weight selected in accordance with said input signal to be amplified by said RF power amplifier, so as to derive a baseband feed-forward correction signal, converting said baseband feed-forward correction signal to analog format, up-converting from baseband the analog feed-forward correction signal and combining the up-converted analog feed-forward correction signal with an amplified output signal from said RF power amplifier.