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How are side ...

Question

How are side bands produced?

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Solution

Sides bands are produced during amplitude modulation. A modulating signal of frequency $ω_{m}$ is superposition on the carrier wave of frequency $ω_{C}$ . The resultant is passed through a square law device and band pass filter which generates side bands from $ω_{C} - ω_{m}$ to $ω_{C} + ω_{m}$ . This modulated wave carries the information.

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