Question

If the flare angle of the horn increases, then its beam width ______

(a) Decreases

(b) Increases

(c) Depends on aperture of horn

(d) Independent of flare angle

I had been asked this question in class test.

My enquiry is from Design topic in portion Horn Antenna of Antennas

Answer 1

Correct choice is (b) Increases

Best explanation: The beam width of the horn antenna increases as the flare angle increases. The reflections are decreases as the flare angle increases. But at 900, the antenna approximates to an open end waveguide and its gain decreases.