Reflective Focusing Based on Few-Layer Gradient Metasurface Element Array

This study proposes a three-layer focusing gradient metasurface for wavefront processing. The structure works in the frequency range of 15–25 GHz and has a central frequency of 19.6 GHz. The metasurface unit is organized in a square and has high-impedance elements that reflect the full range of phas...

Full description

Bibliographic Details
Published in:Frontiers in Physics
Main Authors: Mengyao Yan, Zhichao Sun, Bairui Wu, Pan Cheng, Bijun Xu
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-03-01
Subjects:
metasurface
reflective
focus
wavefront
simulation
Online Access:https://www.frontiersin.org/article/10.3389/fphy.2020.00046/full
Description
Summary:This study proposes a three-layer focusing gradient metasurface for wavefront processing. The structure works in the frequency range of 15–25 GHz and has a central frequency of 19.6 GHz. The metasurface unit is organized in a square and has high-impedance elements that reflect the full range of phase shifts. When the microwave beam is incident on this metasurface, the high-impedance elements modulate the beam according to the gradient arrangement, to realize the focusing effect of the lens, and the efficiency reaches 82%. The simulation results are consistent with the theoretical results.
ISSN:2296-424X

Similar Items