Improvements in Qucs-S Equation-Defined Modelling of Semiconductor Devices and IC’s

Brinson, Mike and Kuzin, Vladimir (2017) Improvements in Qucs-S Equation-Defined Modelling of Semiconductor Devices and IC’s. In: 24th International Conference Mixed Design of Integrated Circuits and Systems, 22-24 June 2017, Bydgoszcz, Poland.


The Qucs Equation-Defined Device was introduce roughly ten years ago as a versatile behavioural simulation component for modelling the non-linear static and dynamic properties of passive components, semiconductor devices and IC macromodels. Today, this component has become an established element for building experimental device simulation models. It’s inherent interactive properties make it ideal for device and circuit modelling via Qucs schematics. Moreover, Equation-Defined Devices often promote a clearer understanding of the factors involved in the construction of complex compact semiconductor simulation models. This paper is concerned with recent advances in Qucs-S/Ngspice/XSPICE modelling capabilities that improve model construction and simulation run time performance of Equation-Defined Devices using XSPICE model syntheses. To illustrate the new Qucs-S modelling techniques an XSPICE version of the EPFL EKV v2.6 long channel transistor model together with other illustrative examples are described and their performance simulated with Qucs-S and Ngspice.

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