Consider an n element broadside linear array Increasing the number of elements has the effect of narrowing the main beam Demonstrate this by evaluating the separation in between the zeros on either side of the principal maximum at 90 Show that for large n this separation is approximated by 2 L, where L nd is the overall length of the array

Question: Consider an n-element broadside linear array. Increasing the number of elements has the effect of narrowing the main beam. Demonstrate this by evaluating the separation

Consider an n-element broadside linear array. Increasing the number of elements has the effect of narrowing the main beam. Demonstrate this by evaluating the separation in ϕ between the zeros on either side of the principal maximum at ϕ = 90◦. Show that for large n this separation is approximated by Δϕ = 2λ/L, where L = nd is the overall length of the array.

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