A submicron PHEMT nonlinear model suitable for RFID low current amplifier design

A new nonlinear submicron double heterostructure PHEMT model is presented that is suitable for low current application. It is found that this model accurately predicts the bias-dependent S-parameters for PHEMT up to 40 GHz, and good agreement is obtained between simulated and measured results for 2.45 GHz and 5.8 GHz amplifiers.