Slow-Wave Microwave and MM-Wave Passive Circuits -

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Résumé :

Comprehensive resource presenting the fundamentals and state of the art concepts, design examples, relevant components, and technology

Slow-wave Microwave and mm-wave Passive Circuits presents the fundamentals and state of the art concepts, design examples, relevant components, and technology of the subject, plus examples of circuit layout optimization using slow-wave circuits. Recent advances in aspects of the slow-wave concept are covered, with potential applications including automotive radars, medical and security applications, and 5G and future 6G for very high-speed communications.

The text considers a variety of slow-wave structures and associated concepts which are useful for circuit design, each structure electrically modeled with clear illustration.

The highly qualified authors show that the use of the slow-wave concept can, in some cases, improve the performance of passive circuits. The techniques proposed make it possible to reduce the size and/or the performance of the circuits, with a beneficial cost-saving effect on semiconductor materials. Concepts are applied to several technologies, namely CMOS, PCB (Printed Circuit Board) and nanowires.

Sample topics covered include:

• Concepts of energy storage with examples of slow-wave CPW (S-CPW), slow-wave SIW (SW-SIW), and slow-wave microstrip (S-MS),
• Transmission line topology and application in integrated technologies (CMOS), including possibilities offered by the BEOL (Back-End-Of-Line),
• Effect of the geometrical dimensions on the transmission line parameters (Z_c, ?, ?_reff, and Q) and comparisons between conventional CPW and CPS, and slow-wave CPW and CPS,
• Performance of slow-wave coupled lines and comparison with conventional microstrip coupled lines.

Slow-wave Microwave and mm-wave Passive Circuits is a highly useful resource for graduate students (best complemented with a basic book on microwaves), engineers, and researchers. The text is also valuable for physicists wishing to implement comparable techniques in optics or mechanics....

Biographie:
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Sommaire:

List of Contributors vii

Preface ix

Acronyms xi

1 Background Theory and Concepts 1
Philippe Ferrari, Marc Margalef-Rovira, and Gustavo P. Rehder

1.1 Historical Background 1

1.2 The Slow-Wave Concept 3

1.3 Modern Slow-Wave Transmission Lines Brief Description 7

1.3.1 Slow-Wave Coplanar Waveguide 7

1.3.2 Slow-Wave Microstrip (S-MS) 8

1.3.3 Slow-Wave Substrate Integrated Waveguide (SW-SIW) 8

1.4 Motivations for the Development of Modern Slow-Wave Transmission Lines 9

1.4.1 Improvement of Transmission Lines Performance in Integrated Technologies 10

1.4.2 Reduction of the Transmission Lines and SIWs Length 16

1.4.3 Addition of New Degrees of Freedom in the Development of Coupled-Lines and 3D Transmission Lines 16

References 17

2 Slow-Wave Coplanar Waveguides and Slow-Wave Coplanar Striplines 21
Anne-Laure Franc, Leonardo Gomes, Marc Margalef-Rovira, and Abdelhalim Saadi

2.1 Introduction - Chapter Organization 21

2.2 Principle of Slow-Wave CPW and Slow-Wave CPS 22

2.2.1 Slow-Wave Coplanar Waveguides Topology 22

2.2.2 Slow-Wave Coplanar Striplines Topology 24

2.2.3 Figures of Merit 24

2.3 Slow-Wave Coplanar Waveguides 25

2.3.1 Electrical Performance 25

2.3.1.1 CPW Strips Dimensions 26

2.3.1.2 Shield Dimensions 28

2.3.1.3 Metal Strips' Thickness 29

2.3.2 Electrical Model 30

2.3.2.1 Model Components 31

2.3.2.2 Model Component Calculations 33

2.3.2.3 Losses Distribution 35

2.3.2.4 Dispersion: Floating Shield Equivalent Inductance 37

2.3.3 Benchmark With Conventional Transmission Lines 38

2.3.3.1 Comparison of Electrical Performance 38

2.3.3.2 Trade-off Between Surface Area and Electrical Performance 40

2.4 Slow-Wave Coplanar Striplines 41

2.4.1 Electrical Performance 41

2.4.2 Electrical Model 43

2.4.3 Design 44

2.4.3.1 Design Rules 44

2.4.3.2 Design Flexibility 45

2.5 Coupled Slow-Wave Coplanar Waveguides 45

2.5.1 Topology 45

2.5.1.1 Design Flexibility 45

2.5.2 Electric and Magnetic Fields Distribution 47

2.5.3 Propagation Modes in Coupled Slow-Wave CPWs 47

2.5.4 Definition of the Electric Model Topology: RLRC Model for Coupled Lines 48

2.5.4.1 Magnetic Coupling 49

2.5.4.2 Electric Coupling 50

2.5.4.3 Lossy Model of a Coupled Slow-Wave CPW 52

2.5.5 Design Charts 52

2.6 Circuits Using Slow-Wave CPW and Slow-Wave CPS 54

2.6.1 Junctions 55

2.6.1.1 Microstrip to Slow-Wave CPW Junction 55

2.6.1.2 Tee-Junctions 56

2.6.2 Millimeter-Wave Filters 57

2.6.2.1 Dual Behavior Resonator 57

2.6.2.2 Coupled Lines Filters 59

2.6.2.3 LC Quasi-Lumped Resonator 61

2.6.3 Power Divider/Combiner 65

2.6.3.1 Wilkinson Topology 65

2.6.3.2 Variation Based on Wilkinson Topology 66

2.6.4 Couplers & Baluns 69

2.6.4.1 Branch-Line Couplers 69

2.6.4.2 Coupled Line Couplers 69

2.6.4.3 Rat-Race Balun 71

2.6.4.4 Power-Divider-Based Balun 73

2.6.5 Voltage-Controlled Oscillator tank 73

2.6.5.1 Slow-Wave CPS as Inductor Voltage-Controlled Oscillator 74

2.6.5.2 Slow-wave CPS resonator standing wave Voltage-Controlled Oscillator 77

2.6.5.3 Conclusion 79

2.6.6 Phase Shifter 80

2.6.6.1 Integrated Phase Shifter With Varactors 81

2.6.6.2 Compact Liquid Crystal MEMS Phase Shifter 82

2.6.7 Sensors 85

2.7 Conclusion 86

References 86

3 Slow-Wave Microstrip Lines 91
Hamza Issa and Ariana Lacorte Caniato Serrano