What is a Multiplexer?
Multiplexers provide a cost-effective solution for communication systems operating in multiple frequency bands multiplexing both transmit and receive paths into a single antenna (or vice versa), or split signals from a single antenna into multiple base stations, allowing the system to accommodate a greater number of operating bands. They can be considered as duplexers (2 bands), triplexers (three bands), quadplexers (4 bands), up to as many as 12 bands.
How Multiplexers Work
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Data Input: Multiple input lines that carry analog or digital signals.
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Select Lines: Control inputs that determine which specific input connects to the output ---> one output line that mirrors the currently selected input signal
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Function: The multiplexer acts as a fast, digitally controlled rotary switch.
Key Multiplexer Applications
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Data Routing & Selection: Directing data from multiple sources onto a single transmission line.
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Communication Systems: Combining multiple signals using TDM or FDM to save bandwidth.
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Computer Architecture: Selecting data paths inside a processor's ALU or memory address decoders.
