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Amplitude (Linear) Modulation
Lecture 8
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Modulation
• Modulation is the process that causes a shift in the range of frequencies in a signal
• Baseband communication----does not use modulation
• Carrier Communication----uses modulation• Continuous Wave Modulation
– AM…Linear– Angle Modulation….Nonlinear
• FM• PM
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Figure 4.1: DSB-SC Modulation
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Figure 4.1: DSB-SC Demodulation
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Diode-Bridge Modulator
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Ring Modulator
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