CST2013: Electric Dispersion Fit Tangent Delta

Modeling: MaterialsNew/EditNew MaterialConductivityDispersion List
Edit Object Properties (navigation tree: Materials:material1PropertiesConductivityDispersion List)

This dialog offers the possibility of defining a specific tangent delta dispersion curve that is automatically fitted to the specified material model.

Please note that the real part of the permittivity is given by the epsilon input on the Material Parameter -General page. Thus, due to the frequency dependent material behavior, the values correspond only at the center frequency.

Tangent Delta Eps

Fitting scheme: Two different dielectric dispersion models can be chosen. The first is Conductivity and the second is General 1^nd order. For a detailed information about these schemes, see Material Overview.

Frequency / Value (Frequency/X/Y/Z) / Weight: In this list box, the specific tangent delta dispersion curve can be defined by setting several tangent delta values at different frequency points. Moreover to each frequency a weight (value greater than/equal to 0.0) is assigned in order to direct the interpolation algorithm and to enforce a reduced error in correspondence of the given frequency point.

Load File...: Opens a file selector dialog to specify a ASCII file containing point coordinates. The file is formatted in lines which specify the frequency points.

In case of isotropic "Normal" material, each line has three entries specifying respectively Frequency, Value and Weight. The Weight field may be skipped and is assumed by default equal to 1.0.

In case of "Anisotropic" material, each line has five entries specifying respectively Frequency, Value for X/Y/Z component and Weight. Also in this case the Weight field may be skipped and is assumed by default equal to 1.0.

Moreover it is possible to set a default frequency unit scale which is applied to all loaded data samples.

Delete: Press this button to delete all selected rows in the tangent delta list box.

Clear List: Pressing this button deletes all entries of the complete tangent delta list box.

OK

Accepts the input and closes the dialog.

Cancel

Closes this dialog box without performing any further action.

Apply

To apply the settings and show the fitted curve.

Help

Shows this help text.