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Antennas are used

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Antennas are used

(a) As transducer

(b) To focus

(c) As transducer & To focus

(d) None of the mentioned

The question was asked at a job interview.

The query is from Link Budget Analysis in chapter Communication Link Analysis of Digital Communications

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Right answer is (c) As transducer & To focus

Easiest explanation: Antennas are used as transducer that converts electronic signals to electromagnetic fields and vice versa. They are also used to focus the electromagnetic energy in the desired direction.

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