A thin linear antenna of length d is excited in such a way that the sinusoidal current

Question:

A thin linear antenna of length d is excited in such a way that the sinusoidal current makes a full wavelength of oscillation as shown in the figure.

(a) Calculate exactly the power radiated per unit solid angle and plot the angular distribution of radiation. (b) Determine the total power radiated and find a numerical value for the radiationresistance.

Distribution
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