Asymmetric Passive Components in Microwave Integrated Circuits

✍ Scribed by Hee-Ran Ahn

• Year: 2006
• Tongue: English
• Leaves: 308
• Category: Library

✦ Synopsis

This book examines the new and important technology of asymmetric passive components for miniaturized microwave passive circuits. The asymmetric design methods and ideas set forth by the author are groundbreaking and have not been treated in previous works. Readers discover how these design methods reduce the circuit size of microwave integrated circuits and are also critical to reducing the cost of equipment such as cellular phones, radars, antennas, automobiles, and robots.An introductory chapter on the history of asymmetric passive components, which began with asymmetric ring hybrids first described by the author, sets the background for the book. It lays a solid foundation with a chapter examining microwave circuit parameters such as scattering, ABCD, impedance, admittance, and image. A valuable feature of this chapter is a conversion table between the various circuit matrices characterizing two-port networks terminated in arbitrary impedances. The correct conversion has also never been treated in previous works.Next, the author sets forth a thorough treatment of asymmetric passive component design, which covers the basic and indispensable elements for integration with other active or passive devices, including: Asymmetric ring hybrids Asymmetric branch-line hybrids Asymmetric three-port power dividers and N-way power dividers Asymmetric ring hybrid phase shifters and attenuators* Asymmetric ring filters and asymmetric impedance transformersWith its focus on the principles of circuit element design, this is a must-have graduate-level textbook for students in microwave engineering, as well as a reference for design engineers who want to learn the new and powerful design method for asymmetric passive components.

✦ Table of Contents

Asymmetric Passive Components in Microwave Integrated Circuits......Page 3
Contents......Page 7
Preface......Page 13
1.1 Asymmetric Passive Components......Page 15
1.2 Circuit Parameters......Page 16
1.3.1 Asymmetric Ring Hybrids......Page 17
1.3.2 Asymmetric Branch-Line Hybrids......Page 18
1.4 Asymmetric Three-Port Power Dividers......Page 19
References......Page 20
2.1 Scattering Matrix......Page 24
2.1.1 Transmission-Line Theory......Page 25
2.1.2 Basis-Dependent Scattering Parameters of a One-Port Network......Page 26
2.1.3 Voltage- and Current-Basis Scattering Matrices of n-Port Networks......Page 28
2.1.4 Complex Normalized Scattering Matrix......Page 31
2.2 Scattering Parameters of Reduced Multiports......Page 32
2.2.1 Examples of Reduced Multiports......Page 35
2.3 Two-Port Network Analysis Using Scattering Parameters......Page 37
2.4.1 ABCD Parameters......Page 43
2.4.2 Open-Circuit Impedance and Short-Circuit Admittance Parameters......Page 50
2.4.3 Conversion Matrices of Two-Port Networks Terminated in Arbitrary Impedances......Page 54
2.5.1 Analyses with Even- and Odd-Mode Excitations......Page 57
2.5.2 Useful Symmetric Two-Port Networks......Page 59
2.6.1 Image Impedances......Page 61
2.6.2 Image Propagation Constants......Page 63
2.6.3 Symmetrical and Common Structures......Page 64
Exercises......Page 66
References......Page 68
3.1 Introduction......Page 70
3.2 Original Concept of the 3-dB Ring Hybrid......Page 71
3.3.1 Coupled Transmission Lines......Page 76
3.3.2 Ring Hybrids with Coupled Transmission Lines......Page 82
3.3.3 Wideband Ring Hybrids......Page 85
3.3.4 Symmetric Ring Hybrids with Arbitrary Power Divisions......Page 88
3.3.5 Conventional Lumped-Element Ring Hybrids......Page 91
3.3.6 Mixed Small Ring Hybrids......Page 94
3.4 Conventional 3-dB Uniplanar Ring Hybrids......Page 98
3.4.1 Uniplanar T-Junctions......Page 99
3.4.3 Wideband Uniplanar Baluns......Page 100
3.4.4 Uniplanar Ring Hybrids......Page 102
Exercises......Page 104
References......Page 105
4.2 Derivation of Design Equations of Asymmetric Ring Hybrids......Page 107
4.3 Small Asymmetric Ring Hybrids......Page 113
4.4.1 Microstrip Asymmetric Ring Hybrids......Page 114
4.4.2 Uniplanar Asymmetric Ring Hybrids......Page 116
4.5.1 Asymmetric Lumped-Element Ring Hybrids......Page 120
References......Page 136
5.2 Origin of Branch-Line Hybrids......Page 139
5.3 Multisection Branch-Line Couplers......Page 141
5.4 Branch-Line Hybrids for Impedance Transforming......Page 146
5.5.1 Analyses of Asymmetric Four-Port Hybrids......Page 153
5.5.2 Conventional–Direction Asymmetric Branch-Line Hybrids......Page 154
5.5.3 Anti-Conventional-Direction Asymmetric Branch-Line Hybrids......Page 161
Exercises......Page 164
References......Page 165
6.1 Introduction......Page 168
6.2 Three-Port 3-dB Power Dividers......Page 169
6.3 Three-Port Power Dividers with Arbitrary Power Divisions......Page 170
6.4 Symmetric Analyses of Asymmetric Three-Port Power Dividers......Page 174
6.5 Three-Port 3-dB Power Dividers Terminated in Complex Frequency-Dependent Impedances......Page 177
6.6 Three-Port 45° Power Divider/Combiner......Page 181
References......Page 182
7.1 Introduction......Page 184
7.2 Perfect Isolation Condition......Page 185
7.3 Analyses......Page 187
7.4 Scattering Parameters of Three-Port Power Dividers......Page 191
7.5 Lumped-Element Three-Port 3-dB Power Dividers......Page 200
7.6 Coplanar Three-Port 3-dB Power Dividers......Page 202
Exercises......Page 203
References......Page 204
8.1 Introduction......Page 206
8.2 General Design Equations for Three-Port Power Dividers......Page 207
8.2.1 Coplanar Three-Port Power Divider Terminated in 50 Ω, 60 Ω, and 70 Ω......Page 210
8.2.2 Determining Z(Ad)......Page 211
8.3 General Design Equations for N-Way Power Dividers......Page 213
8.3.1 Analyses of N-Way Power Dividers......Page 214
References......Page 218
9.1 Introduction......Page 220
9.2 Scattering Parameters of Asymmetric Ring Hybrids......Page 221
9.3 Asymmetric Ring-Hybrid Phase Shifters......Page 223
9.4 Asymmetric Ring-Hybrid Attenuator with Phase Shifts......Page 230
9.4.1 Microstrip Asymmetric Ring-Hybrid 4-dB Attenuator with 45° Phase Shift......Page 234
Exercises......Page 236
References......Page 237
10.1 Introduction......Page 239
10.2.1 Analyses of Ring Filters......Page 240
10.3.1 Lossless Case......Page 244
10.3.2 Loss Case......Page 248
10.4 Conclusions......Page 251
References......Page 252
11.1 Small Transmission-Line Impedance Transformers......Page 254
11.2 Mathematical Approach for CVTs and CCTs......Page 255
11.2.1 CVTs and CCTs......Page 256
11.2.2 Microstrip CVTs and CCTs......Page 261
11.2.3 Bounded Length of CVTs and CCTs......Page 262
11.2.4 Phase Responses of CVTs and CCTs......Page 265
11.3 CVT3PDs and CCT3PDs......Page 267
11.3.1 Isolation Circuits of CVT3PDs and CVT3PDs......Page 268
11.3.2 Design of CVT3PDs and CCT3PDs......Page 270
11.4 Asymmetric Three-Port 45° Power Divider Terminated in Arbitrary Impedances......Page 272
11.4.1 Asymmetric 45° Power Divider Terminated in 30 Ω, 60 Ω, and 50 Ω......Page 273
11.5 CVT and CCT Ring Filters......Page 275
11.5.1 Analyses of Ring Filters......Page 276
Exercises......Page 280
References......Page 281
Appendix A: Symbols and Abbreviations......Page 283
Appendix B: Conversion Matrices......Page 286
Appendix C: Derivation of the Elements of a Small Asymmetric Ring Hybrid......Page 290
Appendix D: Trigonometric Relations......Page 293
Appendix E: Hyperbolic Relations......Page 295
Index......Page 297