Antenna power transmission

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Table of contents

Global introduction
General Introduction
Thesis structure
Chapter 1 State-of-art
1.1 Thesis context
1.2 State-of-art
1.2.1 Transmission methods comparison
1.2.1.1 Inductive charging
1.2.1.2 Strongly coupled magnetic resonance
1.2.1.3 Microwave power transfer
1.2.2 Antenna power transmission
1.2.2.1 Authorized frequency band
1.2.2.2 Antenna’s type, size, and operating frequency
1.2.2.3 Simulation environment
1.2.2.4 Experimental environment
1.2.3 Rectifying circuit
1.3 Thesis objective
1.4 Conclusion
Chapter 2 Antenna design and simulation
2.1 Introduction
2.1.1 Frequency range
2.2 Antenna Design
2.2.1 Preliminary design
2.2.2 Design parameters’ effect on the antenna performance
2.2.3 Simulation environment
2.2.3.1 Propagation in tissue
2.2.3.2 Single tissue (muscle) box
2.2.3.3 Three-layer model
2.2.4 Advanced design
2.3 Numerical results
2.3.1 Reflection coefficient and impedance
2.3.2 Radiation pattern and efficiency
2.3.3 Specific Absorption Rate (SAR)
2.3.4 Surface current and polarization
2.4 CST configuration
2.4.1 Before simulation
2.4.2 Setup solver
2.4.3 Results observation
2.5 Conclusion
Chapter 3 Transmission link establishment and results
3.1 Introduction
3.2 FRIIS equation and transmission efficiency [74]
3.3 Power emitter standard
3.3.1 MedRadio band (402 MHz)
3.3.2 Industrial, Scientific, Medical (ISM) band
3.4 Transmission structure
3.4.1 External antenna choice
3.4.2 Reflector design
3.5 Numerical results
3.5.1 Antenna’s positioning
3.5.2 Transmission distance
3.5.2.1 Implantation depth
3.5.2.1 Transmission distance
3.5.3 Reflector issues
3.5.3.1 Reflector’s geometry
3.5.3.2 Reflector’s material
3.5.3.3 Reflector’s open angle
3.5.3 SAR issues
3.6 Sensitivity analysis
3.6.1 Polynomial Chaos Expansion (PCE) Method
3.6.2 Results and discussion
3.6.2.1 Leave-one-out (LOO) validation error
3.6.2.2 Sobol indices and sensitivity analysis
3.6.2.3 Result prediction
3.7 Conclusion
Chapter 4 Rectifying circuit design and simulations
4.1 Introduction
4.2 Circuit design
4.2.1 Rectifying circuit comparison
4.2.1.1 Circuit structure
4.2.1.2 Impedance matching
4.2.2 Combination design
4.2.3 Printed microstrip circuit design
4.3 Numerical results
4.3.1 Off-the-shelf components
4.3.2 Components number comparison
4.3.3 Load optimization
4.3.4 Diode comparison
4.3.5 Antenna-circuit combination analysis
4.4 Advanced Design System® settings
4.4.1 Circuit microstrip circuit setup
4.5 Sensor analysis
4.6 Conclusion
Chapter 5 Measurements and experimental procedures
5.1 Introduction
5.2 Antenna measurements
5.2.1 Preparations
5.2.1.1 Vector network analyzer
5.2.1.2 RF coaxial cable
5.2.2 Antenna fabrication
5.2.3 Environmental setup and measurements
5.2.3.1 Biological environment
5.2.3.2 First measurement (Univ. Patras)
5.2.3.3 Second measurement (GeePs)
5.3 Transmission measurements
5.3.1 First transmission measurement (Univ. Patras)
5.3.2 Second transmission measurement (GeePs)
5.4 Circuit measurements
5.4.1 Circuit fabrication
5.4.2 Measurements
5.5 Conclusion
Conclusion and Perspectives
Conclusion
Perspectives
References