Materials 6.2.10

3.1. Add

When Add is selected, the Add Material window appears, as shown in the next Figure.

 

Add Material panel

 

Select the required parameters and click on Save. When clicking on "save" to save the material, if it exists, then a message is displayed informing the user that the material has already been defined. If not, then the material definitions are saved.

 In the Add Material window, the following options are available:

Material Attributes - Name. The user specifies the desired name for the new material.

Material Attributes - Color. For more information, see APPENDIX A: Color Selection.

Material Definition - Material defined by geometry. Used to define a material according to its physical properties. After clicking on the Set Parameters button, two different options are available in the Material defined by Geometry window:

  • Constant

Material defined by geometry, tab ‘Constant’

 

To set the material properties invariable. Epsilon (e’) and Mu (µ’) are defined with the same restrictions.

§  Real part: common values are greater than or equal to 1.0.

§  Imaginary part: if the imaginary part is negative, the material is considered to have losses; otherwise it would be equivalent to a material with gain.

 

  •  Variable

Material defined by geometry, tab 'Variable'

 To assign the physical properties of the material according to the frequency.

§  Frequency (in GHz): Sets the associated frequency to the physical properties. The frequency values for each material are interpolated when the simulation is launched in order to use the most suitable one for the working frequency.

§  Real part (’): common values are greater than or equal to 1.0.

§  Imaginary part (’’): if the imaginary part is negative, the material is considered to have losses; otherwise it would be equivalent to a material with gain.

 

§  Add: to add new frequencies to the material properties.

§  Remove: to remove existing frequencies to the material properties

§ Import/Export : to import table with values from a text file or export the table into a text file.

 

File Format

The information of this file can be modified by the user. Be sure not to modify the format and not to introduce any additional line break. 


§ Fill value to selection: This option allows the user to automatically change the value of the selected cells of the table with the inserted value

These parameters can also be set using formulas in function of the frequency values. 

§ Formula:

This option serves for completing the selected cells of the table with values depending on the selected function. After choosing the function that we want to apply, pressing the Load Formula button will load the formula f(p) in the field. The next step is choosing the initial and the final value for the function. The final step is selecting the cells that we want to apply the function to and press the button Apply. The cells will be autocompleted with the values created by the chosen function starting with the initial value and ending with the final one. 

 

Material Definition - Material defined by reflection/transmission coefficient. Used to define a material according reflection coefficient. After clicking on the Set Parameters button, three different options are available in the Material defined by reflection window (following Figure): 

  • Constant

Material defined by coefficient, tab ‘Constant’

To set the material properties invariable. Amplitude and Phase are defined with decibels (dB) and degrees (degrees).

  • Variable with frequency and angle 

Material defined by coefficient, tab 'Variable'

 To assign the refraction and transmission properties of the material according to the frequency and angle.

§  Frequency (in GHz): Sets the associated frequency to the physical properties. The frequency values for each material are interpolated when the simulation is launched in order to use the most suitable one for the working frequency.

§  Angle (in degrees): Sets the associated angle to the physical properties.

 To view further explanation about all the options given in the previous picture, refer to the Material defined by geometry- Variable section of this guide.

 

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