Filter Design
Walt Kester and Andrew Leven
17.1 Introduction
Electronic filters have many applications in the telecommunications and data communications industry. One such application, which involves a multiple channel communications system employing a technique known as time-division multiplexing (TDM), is shown in Figure 17.1. In this system several channels are transmitted through a medium such as an optical fiber, as shown here, or through a coaxial cable or waveguide. Multiplexing means combining several signals into one, and this is accomplished in TDM by allocating time slots for each channel so that each channel is transmitted at a particular time. If the signals are synchronized correctly there will be no interference between ...
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