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| 1. |
A message signal with bandwidth 10 kHz is lower sideband SSB modulated with carrier frequency = 10 Hz. The resulting signal is then passed though a narrow band frequency modulator with carrier frequency = 10 Hz. The bandwidth of the output would be |
| Answer» Bandwidth = 2Δf + 2B But for NBFM, B < 1 BW ≈ 2fm 2fc1 2 x 106 Hz. | |