Abstract

Load-pull systems are today widely accepted as fundamental tools for non-linear performance evaluation, from device design and modeling in R&D labs to MMIC production testing. This paper presents an overview of the recent innovations in load-pull measurements. After a brief introduction on novelties regarding passive set-ups, the survey deals with technological advances for active systems. Finally, a realization of a modular broadband system for on-wafer measurements in the 0.5-18 GHz frequency range is described. S-parameter capability up to 26.5 GHz is also integrated, and the system is easily configurable for harmonic source-pull measurements.