Creating a Dielectric Medium from a Frequency List

Define a frequency-dependent dielectric by specifying data points at a range of frequencies. The values for the dielectric properties are linearly interpolated to obtain the dielectric properties at frequency points other than specified.

  1. On the Construct tab, in the Define group, click the  Media icon. From the drop-down list, select the  Dielectric medium icon.

    Figure 1. The Create dielectric medium dialog (Frequency list).
  2. In the Definition method field, from the drop-down list select Frequency list (linear interpolation).

Specify if the frequency points are manually entered or imported from a file.

  1. Select one of the following:
    • To enter each frequency point, click Dielectric loss tangent or Conductivity and enter the dielectric properties for each frequency point.
    • To import the frequency points from a file, click Import points.
      1. In the Filename field, browse for the file you want to import.
      2. [Optional] In the Scale by field, enter a value to scale the points.

        For example, if you import a value of “2”, scale it by “10e9” to change the value to 2 GHz.

      3. Under Delimiter, click the delimiter type you use in your file.
      4. Click OK to close the Import points dialog.
  2. [Optional] Specify the magnetic properties of the dielectric.
  3. [Optional] In the Mass density (kg/m^3) field, enter a value for ρ.
  4. In the Label field, enter a unique label for the dielectric.
  5. Click Create to create the dielectric and close the dialog.