How Are Side Bands Produced? - Physics

प्रश्न

How are side bands produced?

उत्तर

Side bands are produced during the process of modulation.

During modulation, the audio frequency modulating signal wave is superimposed on a high frequency wave called carrier wave. Any form of modulation produces frequencies that are the sum and difference of the carrier and modulating frequencies. These frequencies are called as side bands.

Lower side band frequency = f_c − f_m

Upper side band frequency = f_c + f_m

where

f_c→Carrier wave frequency

f_m→Modulating signal frequency

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Modulation and Its Necessity

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