Question

Which of the following statements is false about Array-fed antenna?

(a) It is widely used to create a downlink radiation in satellite communication

(b) An array of feed horns are clustered at focal point to produce arbitrary shaped beam

(c) It uses only a single horn feed and a multiple array of passive reflectors

(d) It can also be used with secondary reflector antennas

The question was asked in an international level competition.

I want to ask this question from Application of Parabolic Reflector topic in division Reflector Antenna of Antennas

Answer 1

Correct choice is (c) It uses only a single horn feed and a multiple array of passive reflectors

The explanation: Array-fed antenna uses a cluster of horn feeds instead of a single horn to produce an arbitrary beam. It is mainly used in direct satellite communication for downlink radiation. It is also used with secondary reflectors like Cassegrain.