railway RRB JE (CBT I + CBT II) Mock Test 2024 Communication Systems Amplitude Modulation Conventional Amplitude Modulation
If f is the carrier wave frequency and fm is the modulation frequency, then in the resulting amplitude modulated waveform the upperside band consists of:
1
\(\frac{f_c}{f_m}-2f_m\)
2
fc + fm
3
fc - fm
4
fc + 2fm