Modeling Cascaded Cylindrical Metasurfaces with Spatially-Varying Impedance Distribution

Z Sipus,D Barbaric,Z Eres

doi:10.13164/re.2019.0505

Abstract

Modeling Cascaded Cylindrical Metasurfaces with Spatially-Varying Impedance Distribution

Highlights

Multilayered dielectric structures with embedded metallic patterns, commonly referred to as metasurfaces, can act as electromagnetic devices that direct EM waves, manipulate the polarization of transmitted or reflected waves, or influence the spectral properties of those waves
As in previous section, a cylindrical metasurface placed around an axial incident field source is considered
The purpose of the metasurface is to modify the incident field so that two main beams are formed in the region outside the metasurface, angularly displaced by 90°, and symmetrical to the central normal plane of the metasurface structure

Summary

Introduction

Multilayered dielectric structures with embedded metallic patterns, commonly referred to as metasurfaces, can act as electromagnetic devices that direct EM waves, manipulate the polarization of transmitted or reflected waves, or influence the spectral properties of those waves. This enables a wider range of functionalities, such as focusing, beam tilting, polarization manipulation, and increased bandwidth and angular performance [1,2,3]. Most of the attention was focused on planar metasurfaces that can be realized using conventional printed circuit board (PCB) fabrication techniques For such surfaces, efficient design approaches based on surface impedance boundary conditions They were used for reshaping radiation patterns [14], [15], mantle cloak realizations [16], [17], reduction of antenna blockage [18], and scattering manipulation and camouflage [19]

Objectives

Results

Conclusion