Polarization-dependent coding metasurface with switchable transmission and RCS reduction bands

Hamza Asif Khan*, Chenxi Huang, Qiang Xiao, Syed Muzahir Abbas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
73 Downloads (Pure)

Abstract

In this article, a coding metasurface is specifically designed to switch transmission and reflection functionalities between two different frequency bands for linearly polarized waves within wide incidence angles. A metasurface consists of four metallic patterns, where the middle two structures are inserted to ensure effective performance of transmission and reflection, while the top and bottom patterns are designed based on simultaneously controlling the reflection phase for both polarization states. It has been experimentally demonstrated that the proposed metasurface can convert a transmission band into a complete reflection band (meanwhile, the reflection band is translated into a complete transmission band) by changing the incident polarization state. Highly efficient transmission and reflection characteristics have been achieved from 21.1 to 24.5 GHz as well as from 33.3 to 38.3 GHz, whereas more than 10 dB radar cross-section (RCS) reduction has also been obtained for both TE and TM modes in their respective reflection bands. The performance of the proposed metasurface is well sustained up to 40° oblique incidence. This work will help to open a new aspect in metasurfaces to manipulate the electromagnetic waves at preferable frequency bands to achieve desirable functionalities.

Original languageEnglish
Article number78
Pages (from-to)1-11
Number of pages11
JournalMicromachines
Volume14
Issue number1
DOIs
Publication statusPublished - Jan 2023

Bibliographical note

Copyright the Author(s) 2022. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • coding metasurface
  • radar cross-section (RCS) reduction
  • switchable
  • transmission
  • reflection
  • diffusion

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