Numerical noise model for the AlGaN/GaN HEMT

A numerical approach to simulate the intrinsic noise sources within transistors is described. Using a 2D numerical device solver, spectral densities for the gate and drain noise current sources and their correlation are evaluated using a Green's function approach, an equivalent of Shockley's impedance field method. Case studies with AlGaN/GaN HEMTs compare the numerical simulation results to those from measurements, showing good agreement.