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E-grāmata: Lumped Element Quadrature Hybrids

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  • Formāts: 236 pages
  • Izdošanas datums: 31-Jan-2006
  • Izdevniecība: Artech House Publishers
  • ISBN-13: 9781580536028
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Lumped Element Quadrature HybridsPalielināt
  • Formāts: 236 pages
  • Izdošanas datums: 31-Jan-2006
  • Izdevniecība: Artech House Publishers
  • ISBN-13: 9781580536028
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Quadrature hybrid circuits have wide application in radio frequency and microwave circuits and systems. Andrews (cofounder and technical director, Vectawave Technology) provides an introduction to the theory, design, and use of quadrature hybrids. After an overview of the various forms of quadrature hybrids and their uses, he describes basic theory, particularly with reference to lumped element forms. Issues of approximation and filter design are considered, followed by a chapter on circuit synthesis. Andrews then discusses how theoretical circuits are made in practice and concludes with an examination of special topics, including active circuits, unequal division and nonquadrature hybrids, power handling, graphical techniques for cascaded couplers, and a 50-550-MHz hybrid with sections of different topology. The reader is assumed to have a graduate-level knowledge of radio frequency and microwave circuits and theory. Annotation ©2006 Book News, Inc., Portland, OR (booknews.com)
Preface ix
1 Overview of Quadrature Hybrids 1(18)
1.1 From Distributed to Lumped Element Design
1(7)
1.2 Applications
8(5)
1.3 Analysis of Quadrature Error
13(2)
1.4 Conclusion
15(1)
References
16(3)
2 Basic Theory 19(16)
2.1 Lossless Circuits
19(1)
2.2 Hybrid Circuits
20(4)
2.3 Lumped Element Quadrature Hybrids
24(6)
2.4 Approximate-Phase Quadrature Hybrids
30(3)
2.5 Conclusion
33(1)
References
34(1)
3 Approximations 35(40)
3.1 Optimization Goal
36(1)
3.2 Polynomial Form of F (w)
36(2)
3.3 Rational Form of F (w)
38(7)
3.4 Second-Order Optimum Rational Function
45(3)
3.5 Higher-Order Optimum Rational Functions
48(16)
3.6 Transfer Functions in Terms of the Complex Variable
64(3)
3.7 Numerator Part of the Optimum Transfer Functions
67(4)
3.8 Transfer Functions of Optimum Approximate-Phase Hybrids
71(1)
3.9 Conclusion
72(1)
References
73(2)
4 Passive Synthesis 75(54)
4.1 Even- and Odd-Mode Analysis
76(3)
4.2 The First-Order Quadrature Hybrid
79(2)
4.3 Higher-Order Lowpass Prototypes
81(12)
4.4 Use of Transmission Lines
93(3)
4.5 Optimum Rational Function Second-Order Prototypes
96(8)
4.6 Higher-Order Optimum Rational Function Hybrids
104(3)
4.7 Hyhrid Synthesis Using Cascaded Sections
107(2)
4.8 Cascades of. First-Order Sections
109(3)
4.9 Cascades of Second-Order Sections
112(1)
4.10 Further Cascade Arrangements
113(4)
4.11 Approximate-Phase Hybrids
117(7)
4.12 Approximate-Amplitude Hybrids Based on Phase Delay Networks
124(2)
4.13 Conclusion
126(1)
References
127(2)
5 Practical Design 129(40)
5.1 The First-Order Circuit Coupled Inductor Design
130(5)
5.2 A 435-MHz Ground Inductor Hybrid Design
135(2)
5.3 A 1.27-GHz First-Order Microstrip Hybrid
137(1)
5.4 A 100-200-MHz Third-Order Polynomial-Based Hybrid
138(2)
5.5 A 1-3-GHz Mixed Element Hybrid
140(4)
5.6 A 2.5-6-GHz Hybrid with Coupled Transmission Lines
144(2)
5.7 Optimum Second-Order Hybrids
146(4)
5.8 A 50-150-MHz Second-Order Hybrid
150(1)
5.9 Higher-Order Symmetrical Optimum Hybrids
151(1)
5.10 A 2-32-MHz First-Order Cascade Hybrid
152(2)
5.11 A 10-100-MHz Second-Order Cascade Hybrid
154(3)
5.12 A 10-100-MHz Approximate-Phase Hybrid
157(7)
5.13 A 1-300-MHz Approximate-Amplitude Hybrid Based on Phase Delay Networks
164(3)
5.14 Conclusion
167(1)
Reference
168(1)
6 Special Topics 169(34)
6.1 Active Circuits
169(12)
6.2 Unequal Division and Nonquadrature Hybrids
181(9)
6.3 Power Handling
190(2)
6.4 Graphical Techniques for Cascaded Couplers
192(4)
6.5 A 50-550-MHz Hybrid with Sections of Different Topology
196(5)
6.6 Conclusion
201(1)
References
202(1)
Glossary 203(4)
Bibliography 207(4)
About the Author 211(2)
Index 213


David Andrews is technical director of Vectawave Technology Ltd. He received his B.Sc. in electrical/electronic engineering from Brunel University, London and his Ph.D. in electronics from the University of Surrey, Guildford.
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