Inductorless Filters
Inductorless Filters

Author: Desmond Francis Sheahan

Publisher:

Published: 1967

Total Pages: 260

ISBN-13:

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The report discusses integrated circuits which simulate, in an inductorless fashion, the detailed behavior of the LC filter structure. Two distinct methods are described. The first of these uses exactly the conventional LC filter structure and merely replaces each inductor by an integrable circuit that behaves like an inductor. The circuit takes the form of a frequency-independent, two-port network which, when terminated at one port by a capacitor, presents an inductive behavior at the other port. This impedance inverting network, or gyrator, can be constructed from a pair of controlled sources. The dissertation analyzes this type of gyrator, derives a set of requirements for high-quality performance and describes a specific circuit which meets them. Experiments on a complex band-pass filter confirm that it is possible to obtain low sensitivity filters by this means. The second method simulates the LC filter structure by making a complete model in the manner of an analog computer. Two special circuits were devised to perform, very precisely, the operations of subtraction and integration. These were designated the Difference Amplifier and the Difference Integrator. In an attempt to produce a universal circuit arrangement that would be applicable to all classes of filter, these basic units were used to build the principal canonical tandem section due to Darlington and Brune. These simulated Brune sections were used to construct a low-pass, a high-pass, and a band-pass filter.

Active Filters
Active Filters

Author: S.A. Pactitis

Publisher: CRC Press

Published: 2018-10-03

Total Pages: 288

ISBN-13: 1420054775

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Using an accessible yet rigorous approach, Active Filters: Theory and Design highlights the essential role of filters, especially analog active filters, in applications for seismology, brainwave research, speech and hearing studies, and other medical electronics. The book demonstrates how to design filters capable of meeting a given set of specifications. Recognizing that circuit simulation by computer has become an indispensable verification tool both in analysis and in design, the author emphasizes the use of MicroCap for rapid test of the filter. He uses three basic filter types throughout the book: Butterworth, Chenyshev, and Bessel. These three types of filters are implemented with the Sallen-Key, infinite gain multiple feedback, state-variable, and biquad circuits that yield low-pass, high-pass, band-pass, and band-reject circuits. The book illustrates many examples of low-pass, high-pass, band-pass, and notch active filters in complete detail, including frequency normalizing and denormalizing techniques. Design equations in each chapter provide students with a thorough grounding in how to implement designs. This detailed theoretical treatment gives you the tools to teach your students how to master filter design and analysis.

Passive, Active, and Digital Filters
Passive, Active, and Digital Filters

Author: Wai-Kai Chen

Publisher: CRC Press

Published: 2018-10-08

Total Pages: 838

ISBN-13: 142005886X

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Upon its initial publication, The Circuits and Filters Handbook broke new ground. It quickly became the resource for comprehensive coverage of issues and practical information that can be put to immediate use. Not content to rest on his laurels, in addition to updating the second edition, editor Wai-Kai Chen divided it into tightly-focused texts that made the information easily accessible and digestible. These texts have been revised, updated, and expanded so that they continue to provide solid coverage of standard practices and enlightened perspectives on new and emerging techniques. Passive, Active, and Digital Filters provides an introduction to the characteristics of analog filters and a review of the design process and the tasks that need to be undertaken to translate a set of filter specifications into a working prototype. Highlights include discussions of the passive cascade synthesis and the synthesis of LCM and RC one-port networks; a summary of two-port synthesis by ladder development; a comparison of the cascade approach, the multiple-loop feedback topology, and ladder simulations; an examination of four types of finite wordlength effects; and coverage of methods for designing two-dimensional finite-extent impulse response (FIR) discrete-time filters. The book includes coverage of the basic building blocks involved in low- and high-order filters, limitations and practical design considerations, and a brief discussion of low-voltage circuit design. Revised Chapters: Sensitivity and Selectivity Switched-Capacitor Filters FIR Filters IIR Filters VLSI Implementation of Digital Filters Two-Dimensional FIR Filters Additional Chapters: 1-D Multirate Filter Banks Directional Filter Banks Nonlinear Filtering Using Statistical Signal Models Nonlinear Filtering for Image Denoising Video Demosaicking Filters This volume will undoubtedly take its place as the engineer's first choice in looking for solutions to problems encountered when designing filters.

Active Filter Design
Active Filter Design

Author: Allan Waters

Publisher: Springer

Published: 1991-05-10

Total Pages: 173

ISBN-13: 134921311X

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The principal objective of this book is to present the principles of the subject in a way that will be understood by undergraduate and BTEC HND students. The structure of the book is based on analysis, followed by a synthesis in which the general principles of the subject are adumbrated.

Continuous-Time Active Filter Design
Continuous-Time Active Filter Design

Author: T. Deliyannis

Publisher: CRC Press

Published: 2019-05-08

Total Pages: 352

ISBN-13: 1351833804

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This book presents the design of active RC filters in continuous time. Topics include: filter fundamentals active elements realization of functions using opamps LC ladder filters operational transconductance amplifier circuits (OTACs) MOSFET-C filters Continuous-Time Active Filter Design uses wave variables to enable the reader to better understand the introduction of more complex variables created through linear transformations of voltages and currents. Intended for undergraduate students in electrical engineering, Continuous-Time Active Filter Design provides chapters as self-contained units, including introductory material leading to active RC filters.

Filter Design Solutions for RF systems
Filter Design Solutions for RF systems

Author: Leonardo Pantoli

Publisher: MDPI

Published: 2020-11-19

Total Pages: 186

ISBN-13: 3039435477

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This Special Issue focuses on the state-of-the-art results from the definition and design of filters for low- and high-frequency applications and systems. Different technologies and solutions are commonly adopted for filter definition, from electrical to electromechanical and mechanical solutions, from passive to active devices, and from hybrid to integrated designs. Aspects related to both theoretical and experimental research in filter design, CAD modeling and novel technologies and applications, as well as filter fabrication, characterization and testing, are covered. The proposed research articles deal with different topics as follows: Modeling, design and simulation of filters; Processes and fabrication technologies for filters; Automated characterization and test of filters; Voltage and current mode filters; Integrated and discrete filters; Passive and active filters; Variable filters, characterization and tunability.

The Circuits and Filters Handbook
The Circuits and Filters Handbook

Author: Wai-Kai Chen

Publisher: CRC Press

Published: 2002-12-23

Total Pages: 3076

ISBN-13: 9781420041408

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A bestseller in its first edition, The Circuits and Filters Handbook has been thoroughly updated to provide the most current, most comprehensive information available in both the classical and emerging fields of circuits and filters, both analog and digital. This edition contains 29 new chapters, with significant additions in the areas of computer-