Analysis and Simulations of the Effects of Non-linearity on the Radio Frequency Power Amplifier Modelling

Radio frequency power amplifiers play a key role in transceivers for mobile communications and their linearity is a crucial aspect. In order to meet the linearity requirements dictated by the standard at a reasonable efficiency, the usage of a linearization technique is desired. For effective implementation of any linearization technique, accurate modelling of power amplifier is required. Due to its less complexity, memory polynomial has been widely used for modelling non-linear system with memory. So in this paper, memory polynomial has been used to model the wideband power amplifier. The effects of nonlinearity order and memory depth on the power amplifier modeling have also been simulated. Keywords Power amplifier; non-linearity; memory polynomial