Matthias Rudolph is the Ulrich-L.-Rohde Professor for RF and Microwave Techniques at Brandenburg University of Technology, Cottbus, Germany. Prior to this, he worked at the Ferdinand-Braun-Institut, Leibniz Institut fur Hochstfrequenztechnik (FBH), Berlin, where he was responsible for modeling of GaN HEMTs and GaAs HBTs and heading the low-noise components group.