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A reconfigurable intelligent surface with integrated sensing capability.

Idban Alamzadeh1, George C Alexandropoulos2, Nir Shlezinger3

  • 1Department of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, 85281, USA. amuham23@asu.edu.

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Summary
This summary is machine-generated.

This study introduces a reconfigurable reflective metasurface with built-in sensing. This innovative surface can detect signal direction, enhancing wireless communication and power transfer systems.

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Area of Science:

  • Metasurfaces
  • Electromagnetics
  • Wireless Communication

Background:

  • Reconfigurable reflective surfaces are crucial for optimizing wireless communication and power transfer.
  • Current systems require prior knowledge of the propagation environment, such as transmitter and receiver locations.
  • This necessitates integrated sensing capabilities within the reflective surface itself.

Purpose of the Study:

  • To propose and demonstrate a reconfigurable reflective metasurface with integrated sensing.
  • To enable the metasurface to acquire knowledge of its surrounding propagation environment.
  • To reduce the complexity and cost of sensing systems in wireless applications.

Main Methods:

  • Modifying tunable meta-atoms within the metasurface to couple incident waves to sensing waveguides.
  • Utilizing sampled incident wave signals for environmental sensing.
  • Leveraging the metasurface's tunable multiplexing capability to reduce the number of required radio frequency (RF) chains.

Main Results:

  • Demonstrated the ability to detect the angle of arrival of an incident wave using the integrated sensing.
  • Numerically showed the possibility of reducing the number of required RF chains through multiplexing.
  • Validated the concept of a reconfigurable reflective metasurface with sensing capabilities.

Conclusions:

  • A reconfigurable reflective metasurface with integrated sensing offers a novel solution for environment-aware wireless systems.
  • This technology can significantly benefit wireless communications, wireless power transfer, and RF sensing applications.
  • The integrated sensing capability enhances the adaptability and efficiency of smart sensors and communication platforms.