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In Polarization-twist reflector, sub-reflector consists of a horizontal grating of wires.

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In Polarization-twist reflector, sub-reflector consists of a horizontal grating of wires.

(a) True

(b) False

This question was addressed to me during a job interview.

This interesting question is from Aperture Blockage topic in section Reflector Antenna of Antennas

1 Answer

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Right option is (a) True

The explanation is: In Polarization-twist reflector, sub-reflector consists of a horizontal grating of wires called trans-reflector. In this the antenna is permitted to operate only at a single polarization. The polarized radiation is rotated by 90° by sub-reflector at the primary reflector with the help of twist reflector.

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