Compact Mikaelian Lens Design Using Metasurface Structure

Abstract

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 narrower than contemporary circularly-shaped lens. The design is validated by simulation results, which demonstrate the effectiveness of the focusing.