Microwave Ring Circuits and Related Structures

Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.c Microwave Ring Circuits and Related Structures Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.c Microwave Ring Circuits and Related Structures Second Edition KAI CHANG LUNG-HWA HSIEH A JOHN WILEY & SONS, INC., PUBLICATION Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.c Copyright © 2004 by John Wiley & Sons, Inc.All rights reserved. Published by John Wiley & Sons, Inc., Hoboken, New Jersey. Published simultaneously in Canada. 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Limit of Liability/Disclaimer of Warranty:While the publisher and author have used their best efforts in preparing this book, they make no representations or warranties with respect to the accuracy or completeness of the contents of this book and specifically disclaim any implied warranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the publisher nor author shall be liable for any loss of profit or any other commercial damages, including but not limited to special, incidental, consequential, or other damages. For general information on our other products and services please contact our Customer Care Department within the U.S. at 877-762-2974, outside the U.S. at 317-572-3993 or fax 317-572-4002. Wiley also publishes its books in a variety of electronic formats. Some content that appears in print, however, may not be available in electronic format. Library of Congress Cataloging-in-Publication Data: Chang, Kai, 1948– Microwave ring circuits and related structures / Kai Chang, Lung-Hwa Hsieh.—2nd ed. p. cm.—(Wiley series in microwave and optical engineering) Includes bibliographical references and index. ISBN 0-471-44474-X (cloth) 1. Microwave circuits. 2. Microwave antennas. I. Hsieh, Lung-Hwa. III. Series. TK7876.C439 2004 621.381¢32—dc22 II. Title. 2003056885 Printed in the United States of America. 10 9 8 7 6 5 4 3 2 1 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.c Contents Preface xi 1 Introduction 1 1.1 Background and Applications 1 1.2 Transmission Lines and Waveguides 4 1.3 Organization of the Book 4 2 Analysis and Modeling of Ring Resonators 5 2.1 Introduction 5 2.2 Simple Model 6 2.3 Field Analyses 7 2.3.1 Magnetic-Wall Model 7 2.3.2 Degenerate Modes of the Resonator 9 2.3.3 Mode Chart for the Resonator 11 2.3.4 Improvement of the Magnetic-Wall Model 11 2.3.5 Simplified Eigenequation 13 2.3.6 A Rigorous Solution 14 2.4 Transmission-Line Model 16 2.4.1 Coupling Gap Equivalent Circuit 16 2.4.2 Transmission-Line Equivalent Circuit 22 2.4.3 Ring Equivalent Circuit and Input Impedance 25 2.4.4 Frequency Solution 27 2.4.5 Model Verification 29 2.4.6 Frequency Modes for Ring Resonators 29 2.4.7 An Error in Literature for One-Port Ring Circuit 32 2.4.8 Dual Mode 34 v Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.c 2.5 Ring Equivalent Circuit in Terms of G, L, C 35 2.5.1 Equivalent Lumped Elements for Closed- and Open-Loop Microstrip Ring Resonator 36 2.5.2 Calculated and Experimental Results 40 2.6 Distributed Transmission-Line Model 40 2.6.1 Microstrip Dispersion 41 2.6.2 Effect of Curvature 44 2.6.3 Distributed-Circuit Model 45 References 52 3 Modes, Perturbations, and Coupling Methods of Ring Resonators 55 3.1 Introduction 55 3.2 Regular Resonant Modes 55 3.3 Forced Resonant Modes 58 3.4 Split Resonant Modes 61 3.4.1 Coupled Split Modes 63 3.4.2 Local Resonant Split Modes 64 3.4.3 Notch Perturbation Split Modes 66 3.4.4 Patch Perturbation Split Modes 67 3.5 Further Study of Notch Perturbations 67 3.6 Split (Gap) Perturbations 70 3.7 Coupling Methods for Microstrip Ring Resonators 75 3.8 Effects of Coupling Gaps 77 3.9 Enhanced Coupling 81 3.10 Uniplanar Ring Resonators and Coupling Methods 85 3.11 Perturbations in Uniplanar Ring Resonators 90 References 93 4 Electronically Tunable Ring Resonators 97 4.1 Introduction 97 4.2 Simple Analysis 98 4.3 Varactor Equivalent Circuit 99 4.4 Input Impedance and Frequency Response of the Varactor- Tuned Microstrip Ring Circuit 103 4.5 Effects of the Package Parasitics on the Resonant Frequency 109 4.6 Experimental Results for Varactor-Tuned Microstrip Ring Resonators 112 4.7 Double Varactor-Tuned Microstrip Ring Resonator 115 4.8 Varactor-Tuned Uniplanar Ring Resonators 117 4.9 Piezoelectric Transducer Tuned Microstrip Ring Resonator 124 References 125 ... - tailieumienphi.vn