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Antenna Arrays: A Computational Approach by Randy L. Haupt

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5 Nonplanar Arrays

Array elements usually lie in a plane, because the feed network for nonplanar array is more complicated. In addition, placing array elements on a curved surface complicates design, construction, and testing. A nonplanar array, like the one in Figure 5.1, with elements distributed in three-dimensional space has an array factor given by

images

where

u = sinθ cosimages

us = sinθs cosimagess

v = sinθ sinimages

vs = sinθs sinimagess

u2 + v2 = sin2θ(sin2images + cos2images) ≤ 1

images

θs = elevation steering angle

imagess = azimuth steering angle

A conformal array has the (xn, yn, zn) lying on a curved surface. The maximum gain of a ...

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