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Which polarization is used to reduce the depolarization effect on received waves?

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Which polarization is used to reduce the depolarization effect on received waves?

(a) Circular polarization

(b) Linear polarization

(c) Atomic polarization

(d) Dipolar polarization

This question was posed to me in an internship interview.

The above asked question is from Method of Generation of SSB-SC in division SSB Modulation of Analog Communications

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Right option is (a) Circular polarization

The explanation: In circular polarization at each point the electric field of electromagnetic wave has a constant magnitude but its direction changes as it rotates with time at a steady rate, in a plane perpendicular to the direction of propagation of wave. It is used to reduce depolarization effect on received waves.

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