Analog Electronic Filters Theory, Design and Synthesis
Filters are essential subsystems in a huge variety of electronic systems. Filter applications are innumerable; they are used for noise reduction, demodulation, signal detection, multiplexing, sampling, sound and speech processing, transmission line equali
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ANALOG CIRCUITS AND SIGNAL PROCESSING Series Editors: Mohammed Ismail. The Ohio State University Mohamad Sawan. École Polytechnique de Montréal
For further volumes: www.springer.com/series/7381
Hercules G. Dimopoulos
Analog Electronic Filters Theory, Design and Synthesis
Dr. Hercules G. Dimopoulos Department Electronics Technol. Educ. Inst. of Piraeus (T.E.I.) P. Ralli & Thivon 250 Egaleo 12244 Greece [email protected] Series Editors: Mohammed Ismail 205 Dreese Laboratory Department of Electrical Engineering The Ohio State University 2015 Neil Avenue Columbus, OH 43210, USA
Mohamad Sawan Electrical Engineering Department École Polytechnique de Montréal Montréal, QC, Canada
ISBN 978-94-007-2189-0 e-ISBN 978-94-007-2190-6 DOI 10.1007/978-94-007-2190-6 Springer Dordrecht Heidelberg London New York Library of Congress Control Number: 2011938013 © Springer Science+Business Media B.V. 2012 No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Cover design: VTeX UAB, Lithuania Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
To my beloved wife Kalliope for her affection, patience and wisdom
Preface
Filters are essential subsystems in a huge variety of electronic systems. Filter applications are innumerable; they are used for noise reduction, demodulation, signal detection, multiplexing, sampling, sound and speech processing, transmission line equalization and image processing, to name just a few. In practice, no electronic system can exist without filters. They can be found in everything from power supplies to mobile phones and hard disk drives and from loudspeakers and MP3 players to home cinema systems and broadband Internet connections. This textbook introduces basic concepts and methods and the associated mathematical and computational tools employed in electronic filter theory, synthesis and design. Since the approximation problem must be solved before a filter can be designed, a significant part of the book is concerned with approximations in a manner that allows deep understanding and easy generalization. The approximation procedure uses the filter specifications to derive a circuit function, from which the electronic filter circuit can then be synthesized. The synthesis method to be used in order to derive an electronic circuit from a mathematical circuit function depends on the technology which is to be employed for the final implementation of the filter. Synthesis methods are therefore dependent on the technologies currently available and change as technology evolves. In this book, synthesis methods have been restricted to the classical passive and active-RC cases, which are excellent robust paradigms
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