Question
Explain the necessity of a carrier wave in communication.
✓
Answer
- Without a carrier wave, the input signals could be carried by very low frequency electromagnetic waves but it will need quite a bit of amplification in order to transmit those very low frequencies.
- The input signals themselves do not have much power and need a fairly large antenna in order to transmit the information.
- Hence, it is necessary to impose the input signal on carrier wave as it requires less power in order to transmit the information.
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