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Modeling >> Semiconductor Devices >> Annular/Circular transistors and BSIM4 model
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Message started by mkaragou on Feb 8^th, 2007, 3:37am

Title: Annular/Circular transistors and BSIM4 model
Post by mkaragou on Feb 8^th, 2007, 3:37am

Does anyone know if the BSIM4 is able to model transistors with asymmetric geometry like the annular/circular gate transistors?

The old BSIM3v3 model always had the problem modelling the capacitance whereas for example the gm of the annular transistor could be approximated by an effective W/L ratio.

Title: Re: Annular/Circular transistors and BSIM4 model
Post by Geoffrey_Coram on Feb 8^th, 2007, 11:12am

From a scaling (W/L) perspective, BSIM3 and 4 are cut from the same fold. I doubt you'll do any better.