Linearization Technologies for Power Amplifiers of Cellular Base Stations

Abstract

This paper presents a historical evolution of linearization technologies for power amplifiers of cellular base stations, which has three aspects. One is to reduce the saturation output power level of power amplifiers in multi-carrier base stations in second generation mobile communication systems. Second is to reduce the power consumption of power amplifiers in wideband modulated carrier base stations in third and fourth generation mobile communication systems. Third is to reduce the gain and phase deviations of power amplifiers in Massive MIMO base stations in fifth generation mobile communication systems. This paper shows our research activities of power amplifiers employing the linearization technologies for cellular base stations with regard to the historical evolution, while the linearization technologies will continuously provide a new solution for realizing the cellular base stations in new era.