An Analytical Two-Dimensional C-V Model of AlGaN/GaN MODFET for High Speed Circuit Applications

The IUP Journal of Telecommunications, Vol. V, No. 4, pp. 49-68, July 2013

Posted: 7 Jul 2017

See all articles by Ramnish Kumar

Ramnish Kumar

Guru Jambheshwar University of Science and Technology, Hisar

Sandeep Arya

Guru Jambheshwar University of Science and Technology, Hisar

Anil Ahlawat

KIET, Ghajiabad

Date Written: July 15, 2013

Abstract

In the present paper, a two-dimensional analytical model is developed for the Capacitance-Voltage (C-V) characteristics of a pseudomorphic AlGaN/GaN HEMTfor high speed circuit applications. The current-voltage characteristics have been obtained for a device of 50 nm gate length. The various fringing capacitances are also taken into account in the present model. The small-signal parameters like transconductance, drain conductance and cut-off frequency have also been evaluated. A high cut-off frequency of 220 GHz and a peak transconductance of 161.5 mS/mm for a gate length of 50 nm is obtained, which is vital for millimeter microwave applications. Finally, the obtained results were compared with the experimental data showing a close agreement and the validity of the model.

Keywords: AlGaN/GaN Pseudomorphic HEMT, Cut-Off Frequency, Gate-Drain Capacitance, Gatesource Capacitance, Transconductance, Two-Dimensional Model

Suggested Citation

Kumar, Ramnish and Arya, Sandeep and Ahlawat, Anil, An Analytical Two-Dimensional C-V Model of AlGaN/GaN MODFET for High Speed Circuit Applications (July 15, 2013). The IUP Journal of Telecommunications, Vol. V, No. 4, pp. 49-68, July 2013, Available at SSRN: https://ssrn.com/abstract=2466379

Ramnish Kumar (Contact Author)

Guru Jambheshwar University of Science and Technology, Hisar ( email )

V.P.O.Balawas (Nalwa)
Haryana
Hisar, 125037
India

Sandeep Arya

Guru Jambheshwar University of Science and Technology, Hisar ( email )

V.P.O.Balawas (Nalwa)
Haryana
Hisar, 125037
India

Anil Ahlawat

KIET, Ghajiabad ( email )

13 KM Milestone
Delhi Meerut Road
Ghaziabad, Uttar Pradesh 201206
India

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