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Metasurfaces: physics and applications in wireless communications.

Vasileios G Ataloglou1, Sajjad Taravati2, George V Eleftheriades1

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Summary

Metasurfaces offer a solution to crowded wireless spectrum by enabling opportunistic spectrum sharing. These programmable structures enhance wireless communication performance through advanced features like real-time signal coding and nonreciprocal beamsteering.

Keywords:
beamformingbeamsteeringmetasurfacetime modulationwave engineeringwireless communication

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Area of Science:

  • Electromagnetics and Wave Propagation
  • Wireless Communication Systems
  • Materials Science

Background:

  • Increasing wireless devices lead to spectrum scarcity.
  • Metasurfaces emerge as a solution for opportunistic spectrum sharing.
  • Metasurfaces are compact, multi-functional, and programmable structures.

Purpose of the Study:

  • To overview recent passive and dynamic metasurfaces.
  • To demonstrate metasurfaces' potential in enhancing wireless communication.
  • To highlight unique metasurface capabilities for advanced communication.

Main Methods:

  • Review of recently proposed passive and dynamic metasurfaces.
  • Analysis of metasurface control mechanisms (DC bias, RF modulation).
  • Exploration of metasurface applications in wireless systems.

Main Results:

  • Metasurfaces enable opportunistic spectrum sharing.
  • Programmable metasurfaces offer reciprocal and nonreciprocal signal transmission.
  • Metasurfaces provide features like real-time signal coding and nonreciprocal beamsteering.

Conclusions:

  • Metasurfaces significantly enhance wireless communication system performance.
  • Metasurfaces offer advanced functionalities for future wireless networks.
  • Metasurfaces are a promising technology for addressing spectrum scarcity.