RF Digital Predistorter for Power Amplifiers of 3G Base Stations

This paper presents a new architecture of an RF digital predistorter for power amplifier used in third generation base stations. Linearization of power amplifiers has been treated with many analogue design techniques in order to increase their bandwidth and their efficiency. The novelty is that this architecture is fully reconfigurable and acts on RF signals rather than BaseBand signals. The resulting architecture combines a digital signal processor and a field programmable gate array. Synthesis results show that this architecture provides reliable linearization in case of WCDMA signals.