Creating the Model

Set up the model to write the transmission / reflection coefficients .tr file to be used for the characterised surface.

  1. Use the model created in Periodic Boundary Conditions for FSS Characterisation and rename the file.
  2. Specify the symmetry about the X=0 and Y=0 planes as Geometric symmetry.
  3. Set the frequency to 10 GHz.
  4. Modify the plane wave source settings:
    • Click Loop over multiple directions.
    • Set the θ range from 0 to 180°.
    • Set the ϕ range from 0 to 360°.
    • Increment the incident angle, θ, in 6° steps.
    • Increment the incident angle, ϕ, in 6° steps.
    • Select the Calculate orthogonal polarisations check box.
    Tip: For elements that have small or no variation in ϕ it is sufficient to use a single theta cut when calculating the .tr file.
    Tip: Due to the large number of θ and ϕ samples that are needed, the simulation time can be long. This step can be skipped by using the .tr file that is provided.