== Using a Directional Yagi-Uda Array ==
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A vertical dipole has a fairly omni-directional far-field radiation pattern along the azimuth direction. Next, we will use a directional antenna array as the transmitter. For this purpose, we choose a horizontal end-fire Yagi-Uda dipole array with a reflector, an exciter and 10 director elements. The design of the Yagi-Uda dipole array is discussed in detail in [[EM.Libera Tutorial Lesson 2: Designing A Yagi-Uda Dipole Array]]. The figure below shoes the 3D far-field radiation pattern of 12-element Yagi-Uda array at an operating frequency of 2.4GHz.
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[[Image:ART MANH Fig10.png|thumb|left|550px|The 3D far-field radiation pattern of a horizontally polarized Yagi-Uda dipole array with 10 director elements.]]
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