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Inverse modeling and its application in the design of high electron mobility transistors

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2 Author(s)
Hyungkeun Ahn ; Dept. of Electr. Eng., Pittsburgh Univ., PA, USA ; M. A. El Nokali

An inverse modeling technique is introduced to determine the structural and physical parameters of HEMT from the desired data for maximum transconductance. The technique is based on the availability of analytical expressions describing the electron carrier concentration, the current, the transconductance, the capacitances and the unity current gain frequency of a HEMT. Empirical formulae are obtained that relate the maximum transconductance to the doped AlGaAs thickness, spacer layer thickness, dopant density and aluminum mole fraction. The technique is applied to the design of a HEMT and shows good agreement with the experimental data

Published in:

IEEE Transactions on Electron Devices  (Volume:42 ,  Issue: 4 )