Related Experiment Video
Updated: Oct 27, 2025
09:33
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
6.4K
Full-duplex reflective beamsteering metasurface featuring magnetless nonreciprocal amplification.
Sajjad Taravati1, George V Eleftheriades2
1The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada. sajjad.taravati@utoronto.ca.
Nature Communications
|July 21, 2021
Summary
This study introduces a novel metasurface for nonreciprocal radiation, enabling full-duplex reflective beamsteering in wireless telecommunication systems. The device offers efficient, controllable, and programmable wave engineering capabilities.
Area of Science:
- Electromagnetics and Metamaterials
- Wireless Communication Systems
Background:
- Nonreciprocal radiation is crucial for modern telecommunication systems requiring versatile apparatuses.
- Existing systems often lack efficient full-duplex nonreciprocal wave processing, especially in reflective states.
Purpose of the Study:
- To propose and demonstrate an architecture for full-duplex reflective beamsteering using nonreciprocal radiation.
- To develop an efficient, controllable, and programmable wave engineering apparatus.
Main Methods:
- Integration of series cascaded radiating patches with nonreciprocal phase shifters.
- Design of an ultrathin reflective metasurface architecture.
- Utilizing gradient active nonmagnetic nonreciprocal phase shifters.
Main Results:
- Achieved directive and diverse radiation beams.
- Demonstrated large wave amplification.
- Enabled steerable beams and immunity to undesired time harmonics in the reflective state.
Conclusions:
- The proposed metasurface provides an original and efficient apparatus for full-duplex reflective beamsteering.
- The device offers efficient, controllable, and programmable wave engineering for advanced wireless applications.
