Pulse Amplitude Modulation Circuit Diagram

Pulse Amplitude Modulation Circuit

Other larger groups can be formed, for example 6 mastergroups may be combined to form a jumbogroup with 3600 voice channels. To recover the original baseband signals from the various groups, the appropriate number of filtering demodulation processes will have to be carried out. At each stage of the demodulation process, the correct carrier will have to be reinstated for this to be possible. In FDM, voice signals were ''stacked'' in the frequency spectrum so that many such signals could be...

Quadrature Detector Circuit

Quadrature Detector Circuit

Figure 5.4. a The phasor diagram when signal frequency is lower than carrier frequency. b The phasor diagram when signal frequency is higher than carrier frequency. Figure 5.4. a The phasor diagram when signal frequency is lower than carrier frequency. b The phasor diagram when signal frequency is higher than carrier frequency. Replacing R2 in Equation 5.2.7 by Z2 gives It is evident that V1 and V2 are no longer at right angles to each other. The angle between them depends on the magnitude and...