# 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:
• d = 2.25 (Distance between dipole and plate. [3*lambda/4])
• h = 1.5 (Length of the dipole. [lambda/2])
• a = 4.5 (Half the plate length.)
• rho = 0.03 (Radius of the wire.)
2. Create the dipole.
1. Create a line.
• Start point: (d, 0, -h/2)
• End point: (d, 0, h/2)
3. Create the plate.
1. Create a rectangle.
• Definition method: Base centre, width, depth
• Base centre (C): (0, 0, 0)
• Width (W): 2*a
• Depth (D): 2*a
• Rotate the workplane of the rectangle 90° around the V axis.
4. Add a wire port (segment) to the middle of the line.
5. Add a voltage source to the port. (1 V, 0°, 50 Ω).
6. Set the total source power (no mismatch) to 1 W.
7. Set the Frequency to c0/3.
8. Specify the symmetry about 2 principal planes:
• Z=0: Electric symmetry.
• Y=0: Magnetic symmetry.
Tip: Exploit model symmetries (if it exists) in a large or complex model to reduce computational costs.