I think Hspice is the best. but maybe you can use Cadense verilog-A Environment.

There are matlab,Spise and Vhdl-AMS libraries for them too.

matlab - simulink library can be used

COMSOL Multiphysics can also be used in conjunction with MATLAB

.

Jagdeep:

.

While all of the above suggestions about a choice of simulator

are probably correct - I use proprietary simulators developed by

our own CAD group within my company - there are two, equally

important considerations.

.

FIRST: You need to be very sure of the equations that are used

             to model your devices: you cannot achieve accuracy in

             your circuit simulations without very accurate models,

.

SECOND: These models, and the resulting simulations, cannot

             be accurate - or even meaningful - unless a significantly

            large number of devices have been fitted to the equations

            in the lengthy process known as "device characterization".

.

We can add a further caution in this latter respect. If the devices

measured for characterization purposes show a large amount of

variation, and these statistics are aggregated over a long period

of time - and these data are used in circuit studies - you'll need to

simulate your circuits using extreme ('corner') models. These will

alert you to the sensitivity of your circuit to production variances.

Furthermore, you will need to test circuit behaviour at maximum

and minimum temperatures - often as wide as -50oC to +125oC.

.

Of course, before such circuit simulation can be conducted, you

will need to be sure that the inherent temperature-dependencies

of the devices have been accurately captured in the modelling

equations. 

.

Of course, all this poses a great deal of initial work, I'm not sure

of the state of the modeling art for carbon nanotube FETs; but I

would very much like to know how advanced is this particular

aspect of the technology.

.

Barrie

thank you all of you for your response. 

Dear Jagdeep Kaur Sahani , you can use PTM models in HSPICE, .scs models in cadence. For further details mail to [email protected]

Hspice is the best

HSPICE is best tool

With Hspice you do it

You can import the Verilog-A models as symbol in Cadence Schematic Composer and use it to construct any circuit

Pspice would be an alternative

I am a masters student and cannot access college amenities (HSPICE) now due to lockdown. I have to finish my minor project on CNTFET. Please suggest me a way to do that.

Thank you.