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Radar System Engineering

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278 ANTENNAS, SCANNERS, AND STABILIZATION [SEC. 94<br />

Yagi array has been widely used for wavelengths of several decimeters;<br />

an example is shown in Fig. 6.30. An end-fire antenna can also consist<br />

of a polyrod (a rod of polystyrene) of appropriate dimensions, into one end<br />

i<br />

E\ \ ,<br />

\\\\<br />

(a)<br />

K\(b) . .<br />

Fm. 9.1O.—Aparaboloidreflector may be distorted in various ways in order to producea<br />

fan beam,

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