On the design of balanced carbon nanotube field-effect transistor gates

In this paper, we analyze the compact models for carbon nanotube field-effect transistors (CNTFET) and observe that the logic-gates implemented using CNTFET with unoptimized device parameter have asymmetric voltage transfer characteristic. We propose the design of a balanced inverter circuit implemented using CNTFET devices. The proposed inverter circuit is functional over a wide range of supply voltage, from sub-threshold voltage to nominal supply voltage.