Interactive compact device modelling using Qucs equation defined devices

Brinson, Mike and Jahn, Stefan (2008) Interactive compact device modelling using Qucs equation defined devices. International Journal of Numerical Modelling: Electronic Networks, Devices And Fields, 21 (5). pp. 335-349. ISSN 1099-1204


Recent trends in compact device modelling and circuit simulation suggest a growing movement towards standardisation of Verilog-A as a vehicle for semiconductor device specification and model interchange among commercial and open source simulators. This paper introduces a nonlinear equation defined device characterised by current, voltage and charge equations with a similar syntax to Verilog-A. The equation defined device has been implemented in Qucs and used extensively as a central feature in an interactive modelling system that allows straightforward prototyping of compact device models prior to translation into Verilog-A. To illustrate the properties and use of the Qucs equation defined device a number of examples centred on well-known SPICE models are described.

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