Although (1) is traditionally used for GaAsFETs, it was found more flexible than the classic Shichman-Hodges MOSFET model [7] in controlling large signal effects such as the knee voltage. The Curtice-Ettenberg model implementation part of the Agilent ADS environment is used where parasitic effects such as output impedance and capacitances can be included. The simplicity of the model allows for isolation of non-ideal transistor effects so the significance of each can be evaluated individually. The threshold voltage, transconductance, knee voltage, and output impedance are controlled with the A0, A1, γ, and Rrf parameters respectively. Figure 5 replicates the theoretical current curves from Figure 3 with the Curtice-Ettenberg model. The A0 and A1 parameters of the main and peaking amplifiers are set such that load modulation effect begins when the input reaches a 50 % swing (6-dB power back-off)