A new figure of merit methodology for power amplifier combining technologies

A comparative analysis between well established and more recent solid state power amplifier (SSPA) combining techniques is presented. Based on this analysis, a new Figure of Merit (FOM) methodology is presented that can form part of a process to optimise SSPA design within the constraints of service, technology and performance requirements. Also, this formalises the process of determining the most appropriate SSPA design path, from the earliest stages, based on the above constraints as well as providing a detailed technology comparison to allow optimum technology selection.