An analytical parasitic resistance dependent IdVd model for planar doped InAlAs/InGaAs/InP HEMT using non-linear charge control analysis
An analytical parasitic resistance dependent model for the current voltage characteristics for InAlAs/InGaAs/InP HEMT is proposed. The model uses a new polynomial dependence of sheet carrier concentration on gate voltage to calculate IdVd characteristics and has been extended to obtain transconductance, output conductance and cut-off frequency of the device. A maximum cut-off frequency of 83 and 175 GHz was obtained for channel length of 0.25 and 0.1 ?m, respectively. Close agreement with published results confirms the validity of our approach.
parasitic resistances planar doped idvd characteristics transconductance output conductance cut-off frequency inalas/ingaas heterostructure inp-based hemt