Parabolic Reflector Radiation Pattern

This program accepts from the user the center frequency, focal length and diameter of the parabolic reflector antenna and plot the radiation pattern in both E-plane and H-plane. I think it will be helpful for those who are interested in studying the effect of these parameters on the radiation pattern shape of the parabolic reflector antenna. Finally, I would like to thank Prof. Dr. Hussein Ghouz who writes this code. I just put it GUI form to be an easy tutorial and user friendly.