customers about TOPAS   
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What customers say about TOPAS
"The TransisOr PArameter Scaleable (TOPAS) model by ... IMST ... GmbH, is a new generalized non-linear model suitable for MESFETs and HEMTs ... . It uses a consistent implemenation that ensures excellent agreement between DC, small signal and large signal performance and can simulate the effects of variable gate geometry, temperature dependence and noise. The model is highly adaptable because, unlike many other models, all bias dependent components are represented by spline fits, rather than equations having specific functional forms... . The generalised nature of the model offers excellent agreement between measured and modelled results, and applies equally well to all type of ... devices."
[Douglas S. McPherson in „RFIC and MMIC design and technology“, 2001, p. 153].


Today, TOPAS is used by many foundries, sensors, radar and circuit developers around the world.