Transcription of Chapter 7 Single-SidebandModulation(SSB) andFrequency ...
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Chapter 7 Single-SidebandModulation(SSB) andFrequency ...
Chapter 7 Single-Sideband Modulation (SSB)and frequency TranslationContentsSlide 1 Single-Sideband ModulationSlide 2 SSB by DSBSC-AM and FilteringSlide 3 SSB by DSBSC-AM and Filtering (cont.)Slide 4 SSB and Hilbert TransformsSlide 5 SSB and Hilbert Transforms (cont. 1)Slide 6 SSB and Hilbert Transforms (cont. 2)Slide 6 SSB Modulator Using a Hilbert TransformSlide 7 Another Derivation of the SSBR epresentationSlide 8 Transforms in Generating SSB SignalSlide 9 Coherent SSB DemodulationSlide 10 Coherent Demodulation (cont.)Slide 11 Demodulator Using a Hilbert TransformSlide 12 Demod. Using a Hilbert Transform (cont.)Slide 13 Using a Pilot ToneSlide 14 frequency TranslationSlide 15 frequency Translation (cont.)
lowpass filter G(ω) with cutoff frequency W. In practice, the demodulator shown above should be preceded by a receivebandpass filter that passes s(t) and eliminates out-of-band noise. Frequency Domain Analysis of Operation Remember that b(t) = s(t)2cosωct. So B(ω) = S(ω +ωc)+S(ω −ωc) This translates the sidebands around ±ωc down
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