1. Choose a specific value of the angle 8. Now plot the gain as a function of the height kd. Repeat the same for some other values. Specifically take 0 =

45°, 90°, 135º and choose 0 ≤ kd ≤ 200 for each of these three values of the angle 8. Plot the gain at each of these three values vs. kd and choose about 200 datapoints. (Use MATLAB to do the calculations.) You can choose any frequency between 1 and 5 GHz which shall determine wavenumber k.