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On radiating (sending out) an AM modulated signal,

Question:

On radiating (sending out) an AM modulated signal, the total radiated power is due to energy carried by ωc, ωc – ωm & ωc + ωm. Suggest ways to minimise the cost of radiation without compromising on information

Solution:

Total radiated power due to energy carried by ωc, (ωc – ωm) and (ωc + ωm).

Sideband frequencies are generally close to the carrier frequency.

Only the sideband frequencies carry information in an amplitude modulated signal.

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