April 2011
Intermediate to advanced
1128 pages
25h 6m
English
book
Electrical Engineering: Know It All
by Clive Maxfield, John Bird, Tim Williams, Walt Kester, Dan Bensky
Content preview from Electrical Engineering: Know It All
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Chapter 19
Communications Systems
Alan Bensky and Andrew Leven
19.1 Introduction
Figure 19.1 shows a simplified block diagram of a color television receiver. We will refer to it throughout this chapter. It shows that any receiver must be capable of extracting information from the incoming channels to which it is tuned. The shaded blocks show examples of where demodulation or detection occur for the video and audio signals. Generally the sound uses frequency modulation (FM), while the video signal uses amplitude modulation (AM). The age of digital television and modern data communications uses other techniques. All these methods will be discussed in this chapter.
Figure 19.1 Block diagram of color TV receiver
The requirements for modulation are ...
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