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Which of the following is used to produce wide beam in one plane and narrow beam in other plane?

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Which of the following is used to produce wide beam in one plane and narrow beam in other plane?

(a) Pill box

(b) Truncated paraboloid

(c) Cassegrain

(d) Paraboloid with rectangular aperture

The question was asked during an interview for a job.

This interesting question is from Parabolic Reflector Antenna topic in division Reflector Antenna of Antennas

1 Answer

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Correct answer is (a) Pill box

To explain: Pill box is short parabolic right cylinder enclosed by parallel plates. It produces a wide beam in one plane and narrow beam in other plane. Cassegrain is a dual reflector. Truncated is a type of paraboloid.

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