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Which of the following statements is false for flat reflector?

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Which of the following statements is false for flat reflector?

(a) Plane reflector is used to reduce the backward radiation

(b) Increases the gain in forward direction

(c) A large flat sheet placed in front of dipole increases the directivity

(d) Decreases the gain in forward direction

I got this question in an online interview.

This is a very interesting question from Flat Sheet Reflector topic in chapter Reflector Antenna of Antennas

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Right answer is (d) Decreases the gain in forward direction

The best explanation: A plane or a flat reflector is used to radiate energy in desired direction by placing a feed in front of it. It reduces the backward radiation and increases the gain in the forward direction. A reflector antenna is a high gain antenna.

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