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An ungrounded antenna near the ground ________(a) must be horizontally polarized(b) acts as an antenna array(c) is unlikely to need a ground screen(d) acts as a single antenna of twice the heightThis question was posed to me in a job interview.Enquiry is from Asynchronous TDM in chapter Multiplexing & Sampling of Bandpass Signal of Analog Communications

Answer»

Correct answer is (b) ACTS as an antenna ARRAY

To explain I would say: An ungrounded antenna near the ground acts as an antenna array. An antenna array is a combination of multiple antennae which function as a SINGLE antenna to perform the required task.



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