(Answered) Question compare directivity dant of a 1 m diameter antenna

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Question: Compare directivity Dant of a 1 m diameter antenna aperture operating at 10 GHz with directivity Deye of the eye's pupil operating in the middle of the visible spectrum at λ = 0.5 μ_m. Treat the pupil as a circular aperture with a diameter of 4 mm.

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