Question

Find the optimum aperture angle for H-plane horn with aperture 12λ and path travel difference 0.4λ?

(a) 75.9°

(b) 1.59°

(c) 7.59°

(d) 15.18°

The question was asked during an online exam.

This is a very interesting question from Design topic in section Horn Antenna of Antennas

Answer 1

Right option is (c) 7.59°

The explanation: Optimum aperture angle of the H-plane horn = \(tan^{-1}⁡\frac{h}{2ρ}=tan^{-1}⁡\frac{12λ}{2×45λ}=7.59°\)