Integrated Filters for Short Range Wireless and Biomedical Applications
This book describes the design of low-voltage analog integrated filters using current mirrors, one of the most common building blocks both in analog and mixed-signal VLSI circuits, offering the advantages of low-voltage operation, derivation of resistorle
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For further volumes: http://www.springer.com/series/10059
Costas Laoudias
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Costas Psychalinos
Integrated Filters for Short Range Wireless and Biomedical Applications
Costas Laoudias University of Patras Rio Patras, Greece [email protected]
Costas Psychalinos University of Patras Rio Patras, Greece [email protected]
ISSN 2191-8112 e-ISSN 2191-8120 ISBN 978-1-4614-0259-6 e-ISBN 978-1-4614-0260-2 DOI 10.1007/978-1-4614-0260-2 Springer New York Dordrecht Heidelberg London Library of Congress Control Number: 2011937579 # Springer Science+Business Media, LLC 2012
All rights reserved. This work may not be translated or copied in whole or in part without the written permission of the publisher (Springer Science+Business Media, LLC, 233 Spring Street, New York, NY 10013, USA), except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights. Printed on acid-free paper Springer is part of Springer ScienceþBusiness Media (www.springer.com)
Preface
The technological evolution and market requirements have led to an increasing demand of low-power portable devices, featuring the reduced size and high efficiency. The supply voltage scaling sets new challenges in analog circuit design as this leads to a degraded circuit performance in terms of available bandwidth and smaller available signal swings. So, the design of high performance circuits using current mirrors is highly affected from these parameters. In this direction, novel analog integrated filters using low-voltage high swing current mirrors are introduced. The resonant frequency of the proposed filters can be electronically controlled by modifying appropriate dc currents. Thus, any effect from process, voltage and temperature variations can be eliminated. The derived topologies can be applied in low-power implantable devices for biomedical applications and electronic devices for short-range wireless communication systems. This book covers theoretical aspects of low-voltage current mirrors and the realization of integrators’ topologies using this active cell. A systematic study in the design of high-order filters using several methods is also presented, thus providing an overview in the design of analog filters using current mirrors. Several design examples with the test setup and extended experimental measurements are included in order to demonstrate the performance of the presented topologies. Much of the material presented in this manuscript, originates in work done by Costas Laoudias through his Ph.D. research at University of Patras, Greece, supported by the Research Committee of University of Patras un
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