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  1. An antenna array comprises of two dipoles that are separated by wavelength. The dipoles are fed by currents of the same magnitude and 90° in phase. The array factor is:

    2. A.
    2 cos - 2 sin
    B.
    2 cos + 2 sin
    C.
    2 cos
    D.
    2 sin

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    Answer : Option A

    Explanation :

    Array factor

    φ = 90°.

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