In the two element endfire array of Example 14 4, consider the effect of varying the operating frequency, f, away from the original design frequency, f 0 , while maintaining the original current phasing, 2 Determine the values of at which the maxima occur when the frequency is changed to (a) f 1 5 f 0 (b) f 2 f 0

Question: In the two-element endfire array of Example 14.4, consider the effect of varying the operating frequency, f, away from the original design frequency, f 0

In the two-element endfire array of Example 14.4, consider the effect of varying the operating frequency, f, away from the original design frequency, f₀, while maintaining the original current phasing, ξ = −π/2. Determine the values of ϕ at which the maxima occur when the frequency is changed to

(a) f = 1.5 f₀;

(b) f = 2 f₀.

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