Question

The direction of maximum radiation in end-fire array is ______ with respect to the array axis.

(a) 0° or 180°

(b) 90°

(c) 45°

(d) 270°

The question was posed to me in class test.

I'm obligated to ask this question of End Fire Array in portion Antenna Array of Antennas

Answer 1

The correct answer is (a) 0° or 180°

The explanation is: In an End-fire array the maximum radiation is along the axis of the array. So it is at either 0° or 180°. In broad-side array the maximum radiation is perpendicular to the axis of array that is at 90°.