Wideband microwave imaging system for brain injury diagnosis

I Publications during candidatureIV Publications included in this thesis VIII AcknowledgementsXVI List of Figures XXIII List of Tables XXXII List of AbbreviationsXXXIII Chapter 1 Introduction 1 1.1 Background and Motivation 1 1.2 Wideband Microwave Imaging – Advantages and Applications 2 1.3 Aim of the Thesis3 1.4 Original Contributions of the Thesis 3 1.5 Thesis Organization 5 Chapter 2 Overview of the Microwave-based Systems for Head Imaging 7 2.1 Existing Brain Injury Diagnosis Techniques and Limitations 7 2.2 Existing Microwave-based Head Imaging Systems 8 2.2.1 Microwave Tomography Imaging 10 2.2.2 Wideband Microwave Imaging11 2.3 Challenges of Wideband Microwave Imaging 12 2.4 Conclusion 14 Chapter 3 Compact Wideband Antennas for Microwave Imaging Systems .... 15 3.1 Challenges of Designing an Effective Antenna for Head Imaging Systems and Literature Review15 3.2 Utilization of Plane of Symmetry and Compact Omni-directional Antennas17 3.2.1 Boundary Conditions in a Typical Symmetrical Dipole Antenna 17 3.2.2 Performance Enhancement of Monopole Antennas21 3.2.3 Characteristic Mode Analysis 23 3.2.3.1 Eigenvalue Analysis23 3.2.3.2 Modal Significance Analysis25 3.2.3.3 Characteristic Angle Analysis 26 3.2.3.4 Eigencurrent Analysis27 3.2.3.5 Correlation between eigencurrents and radiation patterns 29