Towards THz Chipless High-Q Cooperative Radar Targets for Identification, Sensing, and Ranging

1
	Supervisor’s Foreword
	Abstract
	Acknowledgments
	Contents
	Acronyms
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	1 Introduction
		1.1 Motivation
		1.2 Why High-mm-Wave and THz Tags?
		1.3 Thesis Overview
		References
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	2 High-Q Resonators for Chipless RFID and Sensing
		2.1 Passive Backscattering
			2.1.1 RCS of Conventional Targets
			2.1.2 Maximum Range
		2.2 High-Q Resonators
			2.2.1 Estimating Material Losses
			2.2.2 RCS of a Resonating Tag
		2.3 Clutter Suppression Methods
			2.3.1 Harmonic Generation
			2.3.2 Out-of-Band Channel Equalization
			2.3.3 Time-Gating
		2.4 Identification and Sensing with High-Q Resonators
			2.4.1 Identification and Sensing
			2.4.2 Hybrid Modulation, Ranging Accuracy, and Sensing Accuracy
		References
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	3 Wireless Sensing with Single Air-Cladded High-Q Resonators at Microwaves
		3.1 Sensing with a Single Air-Cladded High-Q Resonator
			3.1.1 Temperature Sensor for Machine Tools
			3.1.2 Sensing Other Physical Parameters Through Controlled Near-Field Variations
		3.2 Hybrid Modulation Enabled by a High-Q Resonator
			3.2.1 Hybrid Modulation Scheme Based on a High-Q Resonator and Phase-Coded TDR
			3.2.2 Implementation in Ultrawideband
		3.3 Limitations and Performance Deterioration Due to Lossy Materials and Packaging
		References
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	4 Electromagnetic Band Gap (EBG) High-Q Resonator Concepts at mm-Waves
		4.1 High-Q Resonators in a Metallic Bed of Nails (BoN)
			4.1.1 Single Resonator Design
			4.1.2 Multi-resonator Tags
			4.1.3 Discussion
		4.2 High-Q Resonators in a Full-Dielectric Photonic Crystal (PhC)
			4.2.1 Single Resonator Design
			4.2.2 Multi-resonator Tags
			4.2.3 Discussion
		4.3 Potential and Limitations of EBG-Based High-Q Resonators
		References
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	5 High-RCS Wide-Angle Retroreflective Tags Towards THz
		5.1 Corner Reflector and Resonator Array Integration
			5.1.1 Q-Factor and RCS of Resonator Arrays
			5.1.2 Coding with a Frequency Selective Surface (FSS)
		5.2 Lüneburg Lens with Integrated High-Q Coding Particles
			5.2.1 80GHz Lüneburg Lens Tag
			5.2.2 240GHz HR-Si Lüneburg Lens Tag
			5.2.3 Fused Silica Ball Lens with FSS
			5.2.4 Discussion
		5.3 Tag Identification and Ranging with a FMCW Radar at 80 and 240GHz
		5.4 Tag Identification and Ranging in Cluttered Environments at 80GHz
		References
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	6 Conclusion and Outlook
1 (1)
	Appendix A Tag Dimensions
	Appendix B Measured Unloaded Q-Factors of Metal Cavities
	Appendix  Curriculum Vitae