Slow-Wave Substrate-Integrated Waveguide

Chapter 1: Background

• • 1.1 Research Background
• • 1.2 Research Status
• • 1.2.1 Slow-Wave Transmission Line
• • 1.2.2 Slow-Wave Miniaturized Device
• • 1.2.3 Slow-Wave Miniaturized Antenna
• • 1.2.4 Gap Waveguide
• • References

Chapter 2: Design and Operating Principle of SW-SIW

• • 2.1 Fundamentals of Slow-Wave Transmission Lines
• • 2.2 Slow-Wave Substrate-Integrated Groove Gap Waveguide
• • 2.2.1 Introduction
• • 2.2.2 Configuration of the Slow-Wave GW
• • 2.2.2.1 Asymmetric Half-Height Mushroom Unit Cell
• • 2.2.2.2 Substrate-Integrated Groove GW
• • 2.2.2.3 Slow-Wave Substrate-Integrated Groove GW
• • 2.2.2.4 Transition to Microstrip Line
• • 2.2.2.5 Slow-Wave Effect of the Proposed SW-SIGGW
• • 2.2.3 Manufacture and Measurement
• • 2.2.4 Conclusion
• • 2.3 Slow-Wave Substrate-Integrated Waveguide with Miniaturized Dimensions and Broadened Bandwidth
• • 2.3.1 Introduction
• • 2.3.2 SW-SIW Operation Principle
• • 2.3.2.1 Configuration
• • 2.3.2.2 Slow-Wave Effect
• • 2.3.2.3 Parametric Study
• • 2.3.2.4 Impedance Matching of SW-SIW
• • 2.3.3 Simulated and Measured Results
• • 2.3.3.1 Transition From SW-SIW to GCPW
• • 2.3.3.2 Simulated Results
• • 2.3.3.3 Measured Results
• • 2.3.4 Conclusion
• • References

Chapter 3: Device Design Based on SW-SIW

• • 3.1 Slow-Wave Substrate-Integrated Waveguide Miniaturized Phase Shifter
• • 3.1.1 Introduction
• • 3.1.2 Theory of Phase Shifter
• • 3.1.3 Design of SW-SIW Phase Shifter
• • 3.1.4 Simulation Result
• • 3.1.5 Conclusion
• • 3.2 Slow-Wave Substrate-Integrated Waveguide Cross-Junction
• • 3.2.1 Introduction
• • 3.2.2 Theory of Cross-Junctions
• • 3.2.3 The Design Process of Slow-Wave Substrate-Integrated Waveguide (SIW) Cross-Junction
• • 3.2.4 Simulation Result
• • 3.3 Ultracompact Band-Pass Filter Based on Slow-Wave Substrate-Integrated Groove Gap Waveguide
• • 3.3.1 Introduction
• • 3.3.2 Slow-Wave Substrate-Integrated Groove Gap Waveguide and Band-Pass Filter
• • 3.3.2.1 Substrate-Integrated Groove Gap Waveguide
• • 3.3.2.2 Groove Gap Waveguide Integrated with an SW Substrate
• • 3.3.2.3 The SW-SIGGW Resonator
• • 3.3.2.4 The Cascaded SW-SIGGW Second-Order Filter
• • 3.3.2.5 Design and Optimization of the Stacked SW-SIGGW Filter
• • 3.3.3 Fabrication and Measurements
• • 3.3.4 Conclusion
• • References

Chapter 4: Antenna Design Based on SW-SIW

• • 4.1 Horn Antenna with Reduced Size and Enhanced Gain by the Loading of Slow-Wave Periodic Metal Blocks
• • 4.1.1 Introduction
• • 4.1.2 Antenna Design
• • 4.1.2.1 Shortened Horn
• • 4.1.2.2 The SWSs Theoretical Analysis
• • 4.1.2.3 Design of SWSs
• • 4.1.2.4 Impedance Match Improvement
• • 4.1.3 Simulation and Measurement Results
• • 4.1.4 Conclusion
• • 4.2 Miniaturized H-Plane Horn Antenna in Longitudinal Direction Featuring −30 dB Sidelobes via Simple Blocks for Aperture Field Adjustment
• • 4.2.1 Introduction
• • 4.2.2 Antenna Design
• • 4.2.3 Design Guideline and Working Principle
• • 4.2.4 Simulation and Measurement Results
• • 4.2.5 Conclusion
• • 4.3 Compact Slow-Wave SIW H-Plane Horn Antenna with Increased Gain for Vehicular Millimeter-Wave Communication
• • 4.3.1 Introduction
• • 4.3.2 Antenna Design and Analysis
• • 4.3.2.1 Original Optimum SIW H-Plane Horn
• • 4.3.2.2 Straightforwardly Shortened SIW Horn
• • 4.3.2.3 SIW H-Plane Horn Loaded with Slow-Wave Structure
• • 4.3.3 Simulation and Measurement Results
• • 4.3.4 Conclusion
• • 4.4 Circularly Polarized Horn Antenna with Miniaturized Longitudinal Dimension for Vehicular Satellite Communications
• • 4.4.1 Introduction
• • 4.4.2 Antenna Geometry
• • 4.4.3 Antenna Design and Analysis
• • 4.4.3.1 Generation of the CP Operation (Ant. 1 to Ant. 2)
• • 4.4.3.2 Longitudinal Miniaturization of the Horn Antenna (Ant. 2 to Ant. 3)
• • 4.4.3.3 CP Reconstruction in the Shortened Horn (Ant. 3 to Ant. 4)
• • 4.4.3.4 Improvement of Impedance Matching
• • 4.4.4 Simulation and Measurement Results
• • 4.4.5 Conclusion
• • 4.5 Bidirectionally Fed Slow-Wave Substrate-Integrated Waveguide Monopulse Slot Array Antenna with Gain Enhancement
• • 4.5.1 Introduction
• • 4.5.2 Antenna Design
• • 4.5.2.1 Slow-Wave Substrate-Integrated Waveguide
• • 4.5.2.2 SW-SIW Leaky Wave Slot Array
• • 4.5.2.3 Principle of Bidirectionally Fed Sum/Difference Pattern
• • 4.5.3 Result of Simulation and Measurement
• • 4.5.4 Conclusion
• • 4.6 Compact Slow-Wave Half-Mode SIW Periodic Leaky Wave Antenna with Continuous Beam Scanning and High Gain
• • 4.6.1 Introduction
• • 4.6.2 Antenna Design
• • 4.6.2.1 Configuration
• • 4.6.2.2 Gain Enhancement
• • 4.6.2.3 OSB Suppression
• • 4.6.3 Conclusion
• • References

Chapter 5: Antenna Array Based on SW-SIW

• • 5.1 Miniaturized Slow-Wave Substrate-Integrated Waveguide Rotman Lens Compact Multibeam Antenna for Satellite-Assisted Internet of Vehicles
• • 5.1.1 Introduction
• • 5.1.2 The Miniaturized Rotman Lens Design
• • 5.1.2.1 Conventional SIW Rotman Lens
• • 5.1.2.2 Traditional Rotman Lens Miniaturization Methods
• • 5.1.2.3 Slow-Wave SIW
• • 5.1.2.4 Miniaturized Rotman Lens Body Based on SW-SIW
• • 5.1.2.5 Design of the Phase Shifters
• • 5.1.2.6 Miniaturized SW-SIW Rotman Lens
• • 5.1.3 Design of Multibeam Antenna Based on the Miniaturized SW-SIW Rotman Lens
• • 5.1.4 Fabrication and Measurement of the Multibeam Antenna
• • 5.1.5 Conclusion
• • References

Chapter 6: Conclusion