Lumped Element Quadrature Hybrids: Lumped Element Quadrature Hybrids.pdf

Lumped Element Quadrature Hybrids
David Andrews

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A catalog record for this book is available from the U.S. Library of Congress.
British Library Cataloguing in Publication Data
A catalogue record for this book is available from the British Library.
Cover design by Yekaterina Ratner
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International Standard Book Number: 1-58053-601-8
10 9 8 7 6 5 4 3 2 1


Contents
Preface ix
1 Overview of Quadrature Hybrids 1
1.1 From Distributed to Lumped Element Design 1
1.2 Applications 8
1.3 Analysis of Quadrature Error 13
1.4 Conclusion 15
References 16
2 Basic Theory 19
2.1 Lossless Circuits 19
2.2 Hybrid Circuits 20
2.3 Lumped Element Quadrature Hybrids 24
2.4 Approximate-Phase Quadrature Hybrids 30
2.5 Conclusion 33
v


References 34
3 Approximations 35
3.1 Optimization Goal 36
3.2 Polynomial Form of F () 36
3.3 Rational Form of F () 38
3.4 Second-Order Optimum Rational Function 45
3.5 Higher-Order Optimum Rational Functions 48
3.6 Transfer Functions in Terms of the Complex Variable 64
3.7 Numerator Part of the Optimum Transfer Functions 67
3.8 Transfer Functions of Optimum Approximate-Phase
Hybrids 71
3.9 Conclusion 72
References 73
4 Passive Synthesis 75
4.1 Even- and Odd-Mode Analysis 76
4.2 The First-Order Quadrature Hybrid 79
4.3 Higher-Order Lowpass Prototypes 81
4.4 Use of Transmission Lines 93
4.5 Optimum Rational Function Second-Order Prototypes 96
4.6 Higher-Order Optimum Rational Function Hybrids 104
4.7 Hybrid Synthesis Using Cascaded Sections 107
4.8 Cascades of First-Order Sections 109
4.9 Cascades of Second-Order Sections 112
4.10 Further Cascade Arrangements 113
4.11 Approximate-Phase Hybrids 117
vi

4.12 Approximate-Amplitude Hybrids Based on Phase
Delay Networks 124
4.13 Conclusion 126
References 127
5 Practical Design 129
5.1 The First-Order Circuit Coupled Inductor Design 130
5.2 A 435-MHz Ground Inductor Hybrid Design 135
5.3 A 1.27-GHz First-Order Microstrip Hybrid 137
5.4 A 100–200-MHz Third-Order Polynomial-Based
Hybrid 138
5.5 A 1–3-GHz Mixed Element Hybrid 140
5.6 A 2.5–6-GHz Hybrid with Coupled Transmission Lines 144
5.7 Optimum Second-Order Hybrids 146
5.8 A 50–150-MHz Second-Order Hybrid 150
5.9 Higher-Order Symmetrical Optimum Hybrids 151
5.10 A 2–32-MHz First-Order Cascade Hybrid 152
5.11 A 10–100-MHz Second-Order Cascade Hybrid 154
5.12 A 10–100-MHz Approximate-Phase Hybrid 157
5.13 A 1–300-MHz Approximate-Amplitude Hybrid Based
on Phase Delay Networks 164
5.14 Conclusion 167
Reference 168
6 Special Topics 169
6.1 Active Circuits 169
6.2 Unequal Division and Nonquadrature Hybrids 181
6.3 Power Handling 190
6.4 Graphical Techniques for Cascaded Couplers 192
6.5 A 50–550-MHz Hybrid with Sections of Different
Topology 196
6.6 Conclusion 201
References 202
Glossary 203
Bibliography 207
About the Author 211
Index 213
viii

沙发，笑纳了。谢谢楼主。

谢谢楼主分享 [g:12] [g:12] [g:12]

谢谢楼主分享

不错，我要了，辛苦

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谢谢 楼主 支持了哈

谢谢 楼主 支持了哈

多谢分享。