A Figure of Merit for the Evaluation of Long Term Memory Effects in RF Power Amplifiers

This paper proposes a long term memory effect figure of merit, FOM, that can be easily measured in a microwave laboratory and has a simple interpretation in the power amplifier, PA, linearization field. For that, a brief explanation of the long term memory effects´ origins in a RF PA is first presented, and then, the concept of the optimum memoryless PA linearizer is introduced. This is used to define a FOM capable of classifying PAs from a slow dynamics perspective