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Circuit diagram Stereo Multiplexer for FM transmitter

FM stereo broadcasting was introduced during the early 1960s. The scheme that was adopted was chosen to be compatible with the monaural FM radios that were in existence at the time. Essentially, the system performs the multiplexing of two signals and further combines them into a complex baseband signal that modulates the FM carrier. Figure 1 shows a block diagram of the typical analog-stereo generator used to drive an FM transmitter.

Figure 1: FM Stereo Multiplexing

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