Q.

The number of patterns radiation pattern required to specify the characteristic are :

A. three
B. four
C. two
D. five
Answer» A. three
Explanation: the three patterns required are, θ component of the electric field as the function of the angles as θ and φ, the φ component of the electric field as the function of the angles θ and φ, the phase of these fields as a functions of the angle φ and θ .
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