An extension of power amplifier behavioral models for optimizing battery current at system level

One of the most significant figures of merit concerning a power amplifier is its efficiency. However, the behavioral models of power amplifiers are mainly focused on the functional aspects, but not on current consumption. Therefore, simulations with respect to the efficiency of a power amplifier cannot be accomplished at the system level. To close the gap of simulation capabilities, this article proposes a time efficient and accurate extension of behavioral models to predict current consumption. For a commercial handset power amplifier, an average error of 1.9% between the fast high-level model and the measurement results is obtained.