AM-Power Efficiency, Bandwidth, Types of Amplitude Modulation (AM)(EC-8491-UNIT-1)
EC8491-Communication Theory-Syllabus ,UNIT I AMPLITUDE MODULATION (9) Amplitude Modulation- DSBSC, DSBFC, SSB, VSB - Modulation index, Spectra, Power relations and Bandwidth - AM Generation – Square law and Switching modulator, DSBSC Generation – Balanced and Ring Modulator, SSB Generation – Filter, Phase Shift and Third Methods, VSB Generation – Filter Method, Hilbert Transform, Pre-envelope & complex envelope –comparison of different AM techniques, Superheterodyne Receiver, Anna University-2017R, AM-Power Efficiency, Bandwidth
Power Efficiency of AM Signal,
Bandwidth of AM signal,
Types of Amplitude Modulation,
1. AM-Double Side Band Full Carrier (DSB-FC)
2. AM-Double Side Band Suppressed Carrier (DSB-SC)
3. AM-Single Side Band Suppressed Carrier (SSB-SC)
4. Vestigial Sideband Modulation (VSB)
Power Efficiency of AM
1. To save Transmitter power
2. To save bandwidth
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