Question

How are side bands produced?

Answer 1

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 = fc - fm Upper side band frequency = fc + fm where fc→Carrier wave frequency fm→Modulating signal frequency

Answer 2

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$\huge\color{orange}\boxed{Answer}$

$<b><i><u>✔$When the audio frequency modulating signal wave is superimposed on a high frequency wave called carrier wave, the modulation process produce frequencies that are the sum and difference of carrier and modulating frequencies. These frequencies are side bands.


✔In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation, used to transmit information, such as an audio signal, by radio waves. A refinement of amplitude modulation, it uses transmitter power and bandwidth more efficiently. Amplitude modulation produces an output signal the bandwidth of which is twice the maximum frequency of the original baseband signal. Single-sideband modulation avoids this bandwidth increase, and the power wasted on a carrier, at the cost of increased device complexity and more difficult tuning at the receiver.