1.

In a horn antenna, with increase in aperture, the directivity is ____ and diffraction is ______(a) increased, decreased(b) decreased, increased(c) increased, increased(d) decreased, decreasedI have been asked this question in an internship interview.My question comes from Principles in portion Horn Antenna of Antennas

Answer»

The CORRECT choice is (a) increased, decreased

Best EXPLANATION: Horn antenna is DESIGNED to IMPROVE the directivity and reduce the diffractions. It is used to properly match the waveguide to a large radiating aperture by shaping TRANSITION gradually. So, reflections are also decreased.



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