www.microwavejournal.com/articles/29537-ni-awr-design-environment-load-pull-primer-for-optimizing-pa-performance

NI AWR DESIGN ENVIRONMENT: Load-Pull Primer for Optimizing PA Performance
December 18, 2017
Power amplifier (PA) performance under small- and large-signal operating conditions is contingent upon the output impedance match (load). As a result, PA designers must determine the ideal output load for system-driven amplifier requirements such as output power at a given saturated power (compression point), efficiency, and/or linearity.