DISFIT

The Dispersive Material Fitting Tool (DISFIT) is a genetic-algorithm-based optimization tool used to obtain parameters for the different dispersive models (Debye, Lorentz, Drude, and the combination of Drude-Lorentz) for a given material (user-defined or imported from a text file).

Features

Based on genetic algorithm
Initial data can be loaded from a text file or specified directly by the user
Load IT’IS material database
Specify initial and final frequencies and number of samples;
Specify target error, maximum search time, and number of poles
Graphic representation of initial data and superimposed proposed fitting curves
Display frequency or wavelength vs. conductivity or imaginary part of permittivity
Best fit can be copied directly into simulation settings

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