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Sinusoidal Amplitude Modulation

Sinusoidal Amplitude Modulation. Section 6.5. Purpose of Modulation. Human voice: dominated by frequency components of less than 1 KHz. Antenna length requirement: C=30 cm x 1 GHz= λ f λ =C/f Interference from other signals at same frequency. DSB/SC-AM Modulation.

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Sinusoidal Amplitude Modulation

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  1. Sinusoidal Amplitude Modulation Section 6.5

  2. Purpose of Modulation • Human voice: dominated by frequency components of less than 1 KHz. • Antenna length requirement: • C=30 cm x 1 GHz=λf • λ=C/f • Interference from other signals at same frequency

  3. DSB/SC-AM Modulation

  4. Frequency Shift Property

  5. Frequency Spectrum of DSB/SC-AM Signal

  6. Synchronous Demodulator

  7. Amplitude Modulation

  8. Amplitude Modulation Signal In Time Domain

  9. Amplitude Modulation Signal in Frequency Domain

  10. Frequency Modulation

  11. Demodulation of FDM Signals

  12. Demodulation of FDM Signals (2)

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