Predistorter on PASeminar: Gain Without Pain November 2000 RF Predistortion of Power Amplifiers Shawn Stapleton Agilent Technologies 1400 Fountaingrove Parkway Santa Rosa, CA 95403 Abstract With the advent of linear modulation methods, linearization of power amplifiers has become an important technology. The adaptive work function predistorter is an approach to optimizing out-of-band intermodulation performance. This technique can adapt to changes in the power amplifier’s characteristics, including effects such as temperature changes, channel switching, power supply variation, and transistor degradation. The technique can also handle larger bandwidths than current DSP-based digital predistorters. Biography Dr. Shawn P. Stapleton has 17 years of experience in the design of RF and microwave circuits and s……