Stability Analysis for a parametric file

STAN Tool allows the identification of frequency responses as a function of any circuit parameter, Figure. From the tree it is possible to select the entire analysis or for a set of chosen parameter value (name of the parameter is given in the analysis description).
Figure: Parametric stability analysis using STAN Tool. Identification results for different parameter values.


With this parametric analysis, the evolution of poles can be observed when varying the parameters. The value of the parameter at which the circuit becomes stable can be easily identified, Figure. In the Plot tab, it is possible to choose the domain where the plot is displayed, in function of the real part of the poles or function of a swept parameter. A drop-down menu is implemented to permit to choose in function of which parameter the poles are displayed.

Figure: Analysis of a parametric file: Pole-Zero map in function of the swept parameter.


If several parameters vary in the circuit (multimode, Montecarlo, multi-variable sweep) another tab is provided to map the poles in function of different parameters/nodes, “Multi Parameters” (Figure). Three graphs type are available, X/Y, Polar and Smith. The X and Y axis are selected thanks to a drop-down menu.

Figure: Analysis of a parametric file containing two swept variables: Multi Parameters tabs shows the stable and unstable poles.


Note: the information given above for parametric analysis are applicable for multimode and Montecarlo analysis.