To Simulate and Plot the Radiation Pattern of Horn Antenna - Cadfeko Simulation

EXPERIMENT No 9

AIM: - To simulate and plot the radiation pattern of horn antenna

SOFTWARE: - CADFEKO Simulation

PROCEDURE:-

1. Create the model

1. Define the following variables:

• freq = 400e6 (operating frequency)
• lambda = c0/freq (free space wavelength)
• lr = 0.55*lambda (length of the reflector)
• li = 0.50*lambda (length of the active element)
• ld = 0.45*lambda (length of the director)
• d = 0.15*lambda (spacing between elements)

1. Create the active element with start point as (0,-li/2, 0) and the end point as (0, li/2, 0). Set the label as active element
2. Add a port on a segment in the center of the wire    
3. Add a voltage source to the port
4. Create the wire for the reflector. Set the start point as (-d, -lr/2, 0) and the end point as (-d, lr/2, 0). Set the label as reflector.
5. Create the wire for the director. Set the start point as (d,-ld/2, 0) and the end point as (d, ld/2, 0). Set the label as reflector.
6. Set the frequency to the defined variable frequency freq

1. Requesting Calculations

                                  The solution requests are-

1. Create a vertical cut far field request
2. Create a horizontal cut far field request
3. Create a 3D far pattern field request

1. Meshing the information

1. Triangle edge length : Suggest        
2. Wire segment length : Suggest
3. Tetrahedral edge length : Suggest
4. Wire segment radius : 2e-3

1. EM validate

                 After the model has been meshed, run EM validate. Take note  

                 of any warnings & errors. Correct any error before running the

                 FEKO solution kernel.

THEORY :-  

RESULTS :-