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 = 4 (The wavelength in free space.)
    • freq = c0/lambda (The operating frequency.)
    • h = lambda/2 (Length of the dipole.)
    • radius = 2E-3 (Radius of the wire.)
  2. Create the dipole.
    1. Create a line.
      • Start point: (0, 0, -h/2)
      • End point: (0, 0, h/2)
    2. Add a wire port (vertex) to the middle of the line.
    3. Add a voltage source to the port. (1 V, 0°, 50 Ω).
  3. Set the frequency to freq.

The model is symmetric about the Z=0 plane. The electric fields are normal to this plane, and therefore the symmetry is electrical.

  1. Specify the symmetry about the Z=0 plane as Electric symmetry.
    Tip: Exploit model symmetries (if it exists) in a large or complex model to reduce computational costs.