Did your comment focus on non-linear behavior of die level or package -level. I beleive X-paramter set-up can give you large-signal file for packaged device.
Also, another option would be load-pull but it is band limited.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.