== Constructing a 16-Element Patch Array ==
The binary H-tree structure described earlier is expanded to construct a 1:16 Wilkinson power divider network as shown in the figures below. In this case, the network involves 15 ring-type Wilkinson power dividers.
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Using the same mesh densities as before, the planar mesh shown in the figure below is generated for the 16-element patch array.
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At the end of the planar MoM simulation, the following port characteristics are reported:
S11: 0.447781 + 0.118984j
S11(dB): -6.682387
Z11: 123.053609 + 37.286922j
Y11: 0.007443 - 0.002255j
The figures below show the 3D far-field radiation pattern as well as 2D Cartesian radiation pattern cuts in the principal YZ and ZX planes computed at 2.4GHz.
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[[Image:ART PATCH Fig15.png|thumb|left|480px|The 2D Cartesian radiation pattern of the 16-element patch array in the ZX principal plane.]]
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The figures below show the surface electric current distribution maps on the patch and feed planes, as well as the surface magnetic current distribution map on the middle ground plane, all computed at 2.4GHz.
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[[Image:ART PATCH Fig16.png|thumb|left|640px|The surface electric current distribution map on the patch radiators at 2.4GHz.]]
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[[Image:ART PATCH Fig17.png|thumb|left|640px|The surface electric current distribution map on the feed network plane at 2.4GHz.]]
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[[Image:ART PATCH Fig18.png|thumb|left|640px|The surface magnetic current distribution map on the coupling slots at 2.4GHz.]]
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