1.

An antenna has a field pattern E (θ) =cos θ. cos 2θ. The first null beam width of the antenna is?#

A. 45<sup>0</sup>
B. 90<sup>0</sup>
C. 180<sup>0</sup>
D. 120<sup>0</sup>
Answer» C. 180<sup>0</sup>


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