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:
    • r0 = 1 (Sphere radius.)
    • f_min = 1e6 (The minimum frequency.)
    • f_max = 100e6 (The maximum frequency.)
    • d = 2.5e-9 (Thickness of the shell.)
  2. From the media library, add the predefined medium, Silver to the model.
  3. Create a sphere.
    • Definition method: Centre, radius
    • Centre: (0, 0, 0)
    • Radius: r0
    • Label: Sphere1
  4. Set the region of the sphere to Free space.
  5. Set the face of the sphere to the medium, Silver. Set the thickness to d.
  6. Create a single incident plane wave source with θ=90° and ϕ=180°.
  7. Set a continuous frequency range from f_min to f_max.
  8. Specify the symmetry about 3 principal planes:
    1. X=0: Geometric symmetry
    2. Y=0: Magnetic symmetry
    3. Z=0: Electric symmetry
      Tip: Exploit model symmetries (if it exists) in a large or complex model to reduce computational costs.