Compact Mikaelian Lens Design Using Metasurface Structure

• Main Authors: Syue, Cheng-Jie, 薛丞傑
• Other Authors: Malcolm, Ng Mou Kehn
• Format: Others
• Language: en_US
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/wnta22

碩士 === 國立交通大學 === 電信工程研究所 === 105 === Research on metasurfaces has been widespread recently because it can generate arbitrary permittivity and permeability which can be used to synthesize different types of flat surface-wave based lens for engineering applications such as nanofocusing, sensing, detection, and spectral imaging. In this paper, we use the periodic array of square metallic patches etched over a thin grounded dielectric sheet to synthesize a flat Mikaelian lens of rectangular shape that is smaller than contemporary circularly-shaped lens. The design is validated by CST simulation results, which demonstrate the effectiveness of the focusing. The power concentration and transmission efficiency have been defined to quantify the lens performance. In addition, the linkage between the periodic structure and the Mikaelian lens has been proposed successfully in this thesis. Most importantly, we successfully use the rectangular shape to reduce the size of lens.