Realization of Metamaterial-Based Devices: Mathematical Theory and Physical Demonstration

摘要

The focus of this project was on dipole mode analysis and dispersion diagram characteristics of metamaterials constructed from array of dielectric and magnetic spheres in a unit-cell. A comprehensive study was provided and different metamaterials were established. It was demonstrated combining electric and magnetic dipole modes (different spheres particles in a unit-cell) can successfully engineer the dispersion diagrams. Effective metamaterials parameters were obtained. Bandwidth enhancement by increasing the coupling between the particles was also realized. The performance analysis of other shape structures (such as disks, easier for fabrication) was also explored. At the end, hemisphere magneto-dielectric, ENG, and MNG small antennas were developed and their physics were highlighted. Our theoretical model was successfully validated using a full-wave numerical approach through successful modeling of complex metamaterial structures.