Question: A linear phased array antenna consists of eight elements spaced with d = element spacing. (a) Give an expression for the antenna gain pattern

A linear phased array antenna consists of eight elements spaced with d = λ element
spacing. 

(a) Give an expression for the antenna gain pattern (assume no steering
and uniform aperture weighting). 

(b) Sketch the gain pattern versus the sine of the off-boresight angle β. What problems do you see in using d = λ rather than d = λ/2?

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