Design Of Ultra Wideband Antenna Matching Networks: Via Simplified Real Frequency Technique

Design of Ultra Wideband Antenna Matching Networks Binboga Siddik Yarman Design of Ultra Wideband Antenna Matching Networks Via Simplified Real Frequency Technique 123 Dr. Binboga Siddik Yarman College of Engineering Department of Electrical-Electronics Engineering Istanbul University 34320, Avcilar, Istanbul Turkey [email protected] ISBN: 978-1-4020-8417-1 e-ISBN: 978-1-4020-8418-8 Library of Congress Control Number: 2008926115 2008 Springer Science+Business Media B.V. 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. c  Printed on acid-free paper 9 8 7 6 5 4 3 2 1 springer.com This book is dedicated to my wife Sema for her endless patience and love Preface Antennas, antenna matching networks (or equalizers), antenna switches and phase shifters of antenna arrays are the most critical components of ultra wideband communications systems. As a whole, they constitute, what we call is the “antenna system”. It is obvious that these critical components are placed in the front-ends of the communication systems. In other words, transmitters and receivers start with antenna systems. If the antenna system is wideband, then the wireless set up may have a strong chance to be wideband. Otherwise, no matter how good is the rest of the communication system, the system’s bandwidth is bounded by the antenna gears. Commercially, one can find variety of antenna design handbooks and/or Computer Aided Design (CAD) tools to construct antennas. On the other hand, as far as design of wideband practical matching networks is concerned, there is not much available for the design engineers on the market place. The topic is hot but difficult to comprehend. Over the last 30 years, the design methods known as the real frequency techniques (RFT), which was initiated by Prof. H.J. Carlin of Cornell University, provided excellent solutions to construct power transfer networks for many applications. Furthermore, the Simplified Real Frequency Technique (SRFT) has been verified as the most suitable one to design matching networks and microwave amplifiers for antennas. Therefore, this book is solely devoted to design ultra wideband practical antenna matching networks employing SRFT. We tried to make the topic as simple as possible for the designers by providing “ready to use” software (S/W) tools developed on (SRFT). Once the measured data is plugged into SRFT design tool, the complete lossless matching network is obtained at the output. The book starts with the h