Question

Which of the following is the correct form of design equations of a horn antenna?

(a) Length \(ρ=\frac{h^2}{8δ}, flare\, angle=2tan^{-1}⁡\frac{h}{2ρ}\)

(b) Length \(ρ=\frac{h^2}{4δ}, flare\, angle=2tan^{-1}⁡\frac{h}{2ρ}\)

(c) Length \(ρ=\frac{h^2}{4δ}, flare\, angle=tan^{-1}⁡\frac{h}{2ρ}\)

(d) Length \(ρ=\frac{h^2}{8δ}, flare\, angle=tan^{-1}⁡\frac{h}{2ρ}\)

I had been asked this question in an interview for internship.

I'd like to ask this question from Design in portion Horn Antenna of Antennas

Answer 1

Correct answer is (a) Length \(ρ=\frac{h^2}{8δ}, flare\, angle=2tan^{-1}⁡\frac{h}{2ρ}\)

Easiest explanation: Design equations of a horn antenna are:

Length \(ρ=\frac{h^2}{8δ},flare\, angle\, θ=2 tan^{-1}⁡\frac{h}{2ρ}\)