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# Solution: An FM transmitter outputs 1 kW of power when modulated by a 3 kHz sinusoid

#### Problem Statement: Principles of Communications

Modulation Problem Solving

An FM transmitter outputs 1 kW of power when modulated by a 3 kHz sinusoid. If modulation index is 4, determine

(a) The power in the carrier component

(b) The power in the largest sideband

(c) The approximate bandwidth if sideband is considered insignificant if its amplitude is less than 8% of the carrier amplitude

a. The power in the carrier component is equal to 111.11 Watt.

b. The power in the largest sideband is equal to 444.44 Watt.

c. The approximate bandwidth is equal to 30 kHz.

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