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