Question

The phase excitation difference is zero in end-fire array.

(a) True

(b) False

I had been asked this question by my school teacher while I was bunking the class.

I would like to ask this question from End Fire Array in section Antenna Array of Antennas

Answer 1

Correct answer is (b) False

Easiest explanation: In end-fire array the phase excitation difference is ±kd and their phase vary progressively and get unidirectional maximum radiation finally. In broadside side array the phase excitation difference is zero.