Williams A. - Analog Filter and Circuit Design Handbook

About the Author

Arthur B. Williams has over 45 years experience designing filters and analog circuitry. He is the author of 8 books on filters and analog design. He is also the holder of numerous Patents. Mr. Williams has been past chairman of the IEEE Circuits and Systems Society (Long Island) and the recipient of the IEEE Award and Honoree, 2007 For Lifetime Advancement of the Technology of Electronic Filter Design. He is Chief Scientist at Telebyte Inc. where he is involved in the design of test equipment for the telecommunications industry.

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This book is dedicated to my granddaughters
Leviah and Ilona Ehrlich

There have been four editions of the Electronic Filter Design Handbook where each edition had further enhancements over the previous edition. Prior to the books introduction in 1981, the design of passive and active filters was considered a black art reserved for mathematicians and specialists in filter design, mainly because of the tedious calculations required and the skill and experience needed for the proper implementation of the filters. As a result of the book, filters of all types were being designed by individuals with a wide range of technical skills, including hobbyists, technicians, engineers, and scientists. This book became the reference for filters. It appeared on Wikipedia numerous times as the reference for filter-related searches, and was being used as a reference by many technical articles and papers as well as other books.

Although the previous Electronic Filter Design Handbook greatly simplified the design of passive and active filters, a void still existed, as filters are just a specialized segment of general analog design that has always been reserved for specialists. The need existed for a book that demystified analog design in general and expanded beyond filters. That is the function of this book, the first edition of the Analog Filter and Circuit Design Handbook, which not only simplifies filter design, but also breaks down the perception of analog design being a black art. Emphasis has been placed on using operational amplifiers as key building blocks to create working circuits that perform a variety of analog functions.

In addition to developing a strong foundation of understanding how op amps work and their limitations, circuit examples are given. Many of these will perform mathematical functions on analog signals in both a linear and nonlinear manner. Audio applications are shown, such as audio power amplifiers and crossover networks. Both voltage and current feedback amplifiers are covered. Analysis and the impact of nonideal amplifiers are presented. Waveform shaping and generation includes various types of oscillators, both sinusoidal and nonsinusoidal.

The filter-related material presented in the previous book has been revised in the Analog Filter and Circuit Design Handbook, which not only simplifies filter design, but includes new topics and enhances old ones. has been expanded to further emphasize the pole-zero concept and its relationship to a transfer function and to modern network theory utilizing polynomials. The pole-zero concept can provide a useful tool for determining the feasibility of filters, as well as providing guidance as to their optimization. Various methods of synthesis are shown. The trade-offs between active and passive filter implementations are discussed. The frequency limitations of each type are considered.

, including Butterworth, Chebyshev, Bessel, linear phase with equiripple error, transitional, synchronously tuned, and constant delay with Chebyshev stopband. Extensive normalized curves for both frequency and time-domain parameters of these standard polynomial transfer functions are provided. Filter requirement normalization and filter scaling are shown. The highly efficient elliptic-function filter response is introduced in this chapter and emphasized throughout the handbook. Utilization of powerful programs,