Pactitis Active Filters

Theory and Design
1. Auflage 2011
ISBN: 978-1-4200-5477-4
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 288 Seiten

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.

Zielgruppe

Senior undergraduates and graduate students; practicing engineers; technicians; and filter designers.

Autoren/Hrsg.

Pactitis, S.A.

Fachgebiete

• Technische Wissenschaften Elektronik | Nachrichtentechnik Elektronik Bauelemente, Schaltkreise
• Technische Wissenschaften Energietechnik | Elektrotechnik Elektrotechnik

Inhaltsverzeichnis

INTRODUCTION
Filters and Signals
Basic Filter Types

The Mathematics of Elementary Filters

Why Active Filters?

Practical Applications

The Voltage-Controlled Voltage Source (VCVS)

SALLEN-KEY FILTERS
Introduction

Frequency Response Normalization

First-Order Low-Pass Filter

First-Order High-Pass Filter

Second-Order Filters

Low-Pass Filters
High-Pass Filters

Higher-Order Filters
Wide-Band Filters

Wide-Band Band-Reject Filters
Comments on VCVS Filters

Problems

MULTIFEEDBACK FILTERS'
Low-Pass Filters
High-Pass Filters

Higher-Order Filters
Band-Pass Filters
Band-Reject Filters

Comments on MFB Filters

Problems

FILTERS WITH THREE OP-AMPS
State Variable Filter
Biquad Filters
Problems

SENSITIVITY
Introduction

Some General Properties

Magnitude and Phase Sensitivities

Root Sensitivity
Problems

FILTERS WITH GIC
Introduction

Generalized Impedance Converters

Low-Pass Filter Design
High-Pass Filter Design

Narrow-Band Band-Pass Filter Design

Narrow-Band Band-Reject Filter Design

Problems

OTA FILTERS
Introduction

Single OTA LP Filters with Three Passive Components

Second-Order Low-Pass Filter
Second-Order LP Filter with Four Passive Components

Second-Order Band-Pass Filter

OTA-C Filter

Some Non-Ideal Feature of the OTA
Problems

SWITCHED CAPACITOR FILTERS
Introduction

The Switched Capacitor Resistors
The Switched Capacitor Integrator
Practical Limitations of SC Filters

Problems

Appendix A: Node Voltage Network Analysis

Appendix B: Filter Design Nomograph
Appendix C: First- and Second-Order Factors of Denominator Polynomial
Appendix D: Formulas of Normalized Filters

Appendix E: Element Values for Low-Pass LC Filters
Appendix F: Coefficients of Denominator Polynomial
Bibliography