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Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
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Related Experiment Video

Updated: Aug 13, 2025

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Polarization-Dependent Coding Metasurface with Switchable Transmission and RCS Reduction Bands.

Hamza Asif Khan1,2, Chenxi Huang1,2, Qiang Xiao1,2

  • 1Institute of Electromagnetics Space, Southeast University, Nanjing 210096, China.

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|January 21, 2023
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Summary

This study introduces a novel coding metasurface capable of switching between transmission and reflection functionalities for electromagnetic waves. The device achieves high efficiency across dual frequency bands and maintains performance at wide incidence angles.

Keywords:
coding metasurfacediffusionradar cross-section (RCS) reductionreflectionswitchabletransmission

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Area of Science:

  • Electromagnetics
  • Materials Science
  • Metasurface Technology

Background:

  • Metasurfaces offer advanced control over electromagnetic waves.
  • Switchable functionalities in metasurfaces are crucial for dynamic electromagnetic applications.
  • Dual-band operation and wide-angle performance are key challenges in metasurface design.

Purpose of the Study:

  • To design and demonstrate a coding metasurface with switchable transmission and reflection functionalities.
  • To achieve dual-band operation for linearly polarized waves.
  • To ensure robust performance under wide incidence angles.

Main Methods:

  • Design of a four-metallic-pattern coding metasurface.
  • Integration of specific structures for transmission and reflection control.
  • Simultaneous phase control for both polarization states (TE and TM).
  • Experimental validation of the proposed metasurface.

Main Results:

  • Switchable functionality between transmission and reflection bands demonstrated by altering incident polarization.
  • High-efficiency transmission (21.1–24.5 GHz) and reflection (33.3–38.3 GHz) achieved.
  • Over 10 dB radar cross-section (RCS) reduction for both TE and TM modes.
  • Performance maintained up to 40° oblique incidence.

Conclusions:

  • The developed coding metasurface effectively switches electromagnetic wave functionalities between two frequency bands.
  • The design enables dynamic control of wave propagation with high efficiency and wide-angle stability.
  • This work advances metasurface applications for tailored electromagnetic wave manipulation.