Calculate Peak Frequency Deviation of an FM Signal | f(t)=A_c cos(2πf_c t + 3 sin(2πf_1 t) + 4 sin(6πf_1 t))

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EC > GATE 2025 > Analog Modulation

Consider a frequency-modulated (FM) signal
f(t)=A_ccos(2πf_ct+3 sin(2πf₁t)+4 sin(6πf₁t)).
where A_c and f_c are, respectively, the amplitude and frequency (in Hz) of the carrier waveform. The frequency f₁ is in Hz, and assume that f_c>100f₁.
The peak frequency deviation of the FM signal in Hz is

A

15f₁

B

12f₁

C

4f₁

D

2f₁

Correct : a

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frequency modulation FM signal peak frequency deviation GATE EC 2025 EC gate frequency deviation formula FM signal analysis GATE 2025 EC modulation frequency deviation

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