Fig. 2
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Antenna length calculation for an array, where l1xθ is the antenna length associated with 
polarized incident field for x-directed antenna in the embedded element number 1 in the array shown, similarly to lixθ, liyθ, where i is the embedded element number. For brevity we consider a four-element array i = 1, ⋯, 4; the extension to i = 1, ⋯, N presents no complication.
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