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Prateek Asked :

02-10-2021 Antennas

Q. In which of the following principle is used in the phased array radar?

A. Interference
B. Diffraction
C. Reflection
D. Refraction

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Dapzoi Verified
Commented on 2021-10-02 11:29:49 (IST)
Answer: A

Explanation: In phased array radar a single radiator is used to feed antenna array with different phase shifts. When the signals are in-phase the superposition occurs and out of phase cancellation takes place. Thus it is able to steer the beam to required direction.