Novel Propagation Characteristics of Lossy Dielectric-Loaded Waveguides
This chapter focuses on the propagation characteristics of the wave in strong lossy dielectric-loaded waveguide. It discovers a fundamental property of the lossy dielectric-loaded waveguide, namely, dielectric loss-induced modal transition. The modal tran
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llimeterWave Gyrotron Traveling-Wave Tube Amplifiers
Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers
Chao-Hai Du • Pu-Kun Liu
Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers
123
Chao-Hai Du Pu-Kun Liu School of Electronics Engineering and Computer Science Peking University Beijing, China
ISBN 978-3-642-54727-0 ISBN 978-3-642-54728-7 (eBook) DOI 10.1007/978-3-642-54728-7 Springer Heidelberg New York Dordrecht London Library of Congress Control Number: 2014940850 © Springer-Verlag Berlin Heidelberg 2014 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Exempted from this legal reservation are brief excerpts in connection with reviews or scholarly analysis or material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Duplication of this publication or parts thereof is permitted only under the provisions of the Copyright Law of the Publisher’s location, in its current version, and permission for use must always be obtained from Springer. Permissions for use may be obtained through RightsLink at the Copyright Clearance Center. Violations are liable to prosecution under the respective Copyright Law. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein. Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
Preface
A gyrotron traveling-wave tube (gyro-TWT) amplifier is capable of generating highpower and broadband coherent electromagnetic radiation on the level of hundreds of kilowatts in the millimeter-wave range. It is one of the most promising candidates of the electromagnetic-wave power amplifier for the next generation of imaging radars and long-range high-data-rate wireless communications. It would play an important role in many fields, such as national security, small objects tracking in the outer space, accurate atmosphere and weather monitoring, and so on. A gyroTWT amplifies the driving power based on the convective instability principle of the relativistic electron cyclotron maser (ECM).
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