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Which of the following principle is used in the phased array radar?

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Which of the following principle is used in the phased array radar?

(a) Interference

(b) Diffraction

(c) Reflection

(d) Refraction

This question was addressed to me by my college director while I was bunking the class.

My doubt is from Phased Array topic in division Phased, Adaptive and Binomial Arrays of Antennas

1 Answer

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Best answer
Right choice is (a) Interference

The best 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.

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