|
The concept of the 'Analog Front End' (AFE), which is the interface to the real world in most IC-system chips, is first introduced. The course then focuses on active-RC filters which constitute an essential part of most AFEs. The formulation of filter specifications and the basic ideas associated with classical filter approximation theory are then briefly reviewed. Some key points of classical network theory, as needed for the understanding of inductorless filter design, are then briefly recalled. This is followed by some basic concepts of signal-flow graph theory, which permit the transition from transfer function (resulting from approximation theory) to circuit topology. After the review of these introductory and basic concepts, the stage is set to consider some of the most important and established active-RC filter-design techniques. Examples are given for the conversion of classical LCR filter structures into inductorless active-RC filter circuits that are amenable to IC chip design. The examples are taken from typical modern communication systems. Finally, filters designed using the design techniques covered in the course are compared in terms of practical performance criteria such as thermal output noise, sensitivity to component tolerances, and tunablity.
|
Cart
