Reflector Antenna Questions and Answers – Flat Sheet Reflector

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This set of Antennas Multiple Choice Questions & Answers (MCQs) focuses on “Flat Sheet Reflector”.

1. 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
View Answer

Answer: d
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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2. A corner reflector is converted to plane reflector when the corner angle is ______
a) 90°
b) 180°
c) 45°
d) 60°
View Answer

Answer: b
Explanation: For a corner reflector to become a plane reflector the corner angle must be 180°.
For a plane reflector N (current element) =1
\(α=\frac{π}{N}=π.\)

3. Which of the following reflector antenna is formed by joining two plane reflectors at some angle (≠nπ)?
a) Corner
b) Parabolic
c) Cheese
d) Truncated
View Answer

Answer: a
Explanation: By joining two plane sheet reflectors at some angle we get the corner antenna. A plane or a flat reflector is used to radiate energy in desired direction by placing a feed in front of it. Cheese and Truncated are types of parabolic antenna.
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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Youtube | Instagram | Facebook | Twitter