The power radiated in a horizontal plane by both antennas together is measured by the detector and is found to vary with angle.
(a) Is the power detected at θ = 0 a maximum or a minimum? Explain.
(b) Sketch a graph of P versus θ to show qualitatively how the power varies with angle θ (from ˆ’ 180° to + 180°) if θ = λ. Label your graph with values of q at which the power is maximum or minimum.
(c) Make a qualitative graph of how the power varies with angle for the case d = λ/2. Label your graph with values of θ at which the power is maximum or minimum.

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