The carrier wave of frequency 100 MHz is frequency modulated by a sinusoidal wave of amplitude 20 V and frequency 100 kHz. The frequency sensitivity kf = 25 kHz/V.
1. Write expression for FM modulated wave s(t) if Ac = 1 V.
2. Calculate frequency deviation, f for the FM wave.
3. Calculate modulation index for the FM wave.
4. Is this a narrowband FM wave?
5. Determine approximate bandwidth for the FM wave using Casron's rule.