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An amplitude modulated system requires less bandwidth than single side band system.

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An amplitude modulated system requires less bandwidth than single side band system.

(a) True

(b) False

This question was posed to me during an internship interview.

This key question is from Chopper Circuit topic in section Side Band Techniques of Analog Communications

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The correct choice is (b) False

The explanation is: In Single Sideband transmission, the carrier is suppressed and only either of the two sidebands is transmitted. Thus, it reduces the total power consumption and also reduces the bandwidth required. The two sidebands carries exactly the same information and thus removing a sideband does not have any effect on the signal.

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