Comparison Between Different Designs and Realizations of Anomalous Reflectors

Abstract

Metasurfaces enable efficient manipulation of electromagnetic radiation. In particular, control over plane-wave reflection is one of the most useful features in many applications. Extensive research has been done in the field of anomalous reflectors over the past years, resulting in numerous introduced geometries and several distinct design approaches. Anomalously reflecting metasurfaces designed using different methods show different performances in terms of reflection efficiency, angular response, frequency bandwidth, etc. Without a comprehensive comparison between known design approaches, it is difficult to properly select the most appropriate design method and the most suitable metasurface geometry. Here, we consider four main approaches that can be used to design anomalous reflectors within the same basic topology of the structure and study the designed metasurfaces first on the level of the input impedance and then consider and compare the performance of the realized structures. We cover a wide range of performance aspects, such as the power efficiency and losses, angular response, and the scattering pattern of finite-size structures. We anticipate that this study will prove useful for developing new engineering methods and designing more sophisticated structures that include reconfigurable elements. Furthermore, we believe that this study can be considered referential since it provides comparative physical insight into anomalous reflectors in general.

arXiv comment9 pages, 10 figures

References in corpus (10)

• Perfect control of reflection and refraction using spatially dispersive metasurfaces
• Meta-Gratings: Beyond the Limits of Graded Metasurfaces for Wavefront Control
• Synthesis of passive lossless metasurfaces using auxiliary fields for reflectionless beam splitting and perfect reflection
• Perfect Anomalous Reflection with a Binary Huygens' Metasurface
• Intelligent Metasurfaces with Continuously Tunable Local Surface Impedance for Multiple Reconfigurable Functions
• Analytical Design of Printed-Circuit-Board (PCB) Metagratings for Perfect Anomalous Reflection
• A multi-functional reconfigurable metasurface: Electromagnetic design accounting for fabrication aspects
• Reradiation and Scattering from a Reconfigurable Intelligent Surface: A General Macroscopic Model
• Experimental demonstration and in-depth investigation of analytically designed anomalous reflection metagratings
• Independent Control of Multiple Channels in Metasurface Devices

Cited by in corpus (3)

• Efficient Synthesis of Passively Loaded Finite Arrays for Tunable Anomalous Reflection
• Modeling RIS from Electromagnetic Principles to Communication Systems--Part I: Synthesis and Characterization of a Scalable Anomalous Reflector
• Simultaneous High-Efficiency Anomalous Reflection and Angle of Arrival Sensing in Reconfigurable Intelligent Surfaces