Creating the Model

Create the model in CADFEKO. Define any ports and sources required for the model. Specify the operating frequency or frequency range for the model.

1. Define the following variables.
   • lambda = 1 (The wavelength in free space.)
   • freq = c0/lambda (The operating frequency.)
   • s = 3*lambda (Side lengths of the trihedral.)
2. Create the trihedral.
   1. Create the first polygon.
      • Corner 1: (0, 0, 0)
      • Corner 2: (s, 0, 0)
      • Corner 3: (0, s, 0)
   2. Create the second polygon.
      • Corner 1: (0, 0, 0)
      • Corner 2: (0, 0, s)
      • Corner 3: (s, 0, 0)
   3. Create the third polygon.
      • Corner 1: (0, 0, 0)
      • Corner 2: (0, s, 0)
      • Corner 3: (0, 0, s)
3. Union the plates.
4. Add a single incident plane wave with θ=60° and ϕ=45°.
5. Set the frequency to freq.
6. Solve the model with the MLFMM solver.
   Tip: Open the Solver settings dialog, click the MLFMM / ACA tab and then click Solve model with the multilevel fast multipole method (MLFMM).