Metasurfaces: physics and applications in wireless communications.

Autor: Ataloglou VG; The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada., Taravati S; Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK., Eleftheriades GV; The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada.
Jazyk: angličtina
Zdroj: National science review [Natl Sci Rev] 2023 Jun 06; Vol. 10 (8), pp. nwad164. Date of Electronic Publication: 2023 Jun 06 (Print Publication: 2023).
DOI: 10.1093/nsr/nwad164
Abstrakt: The ever increasing number of wireless devices and systems has led to a crowded spectrum and increased the demand for versatile and multi-functional wireless apparatuses. Recently, metasurfaces have been explored as a prominent technological solution to the current paradigm of spectrum scarcity by opportunistically sharing the spectrum with various users. In general, metasurfaces are passive/dynamic, ultra-compact, multi-functional and programmable structures that are capable of both reciprocal and nonreciprocal signal-wave transmissions. The controllability and programmability of such metasurfaces are governed through DC bias and occasionally a radio-frequency modulation applied to the active components of the unit cells of the metasurface, e.g. diodes and transistors. This article overviews some of the recently proposed passive and dynamic metasurfaces and shows that metasurfaces can enhance the performance of wireless communication systems thanks to their unique physical features such as real-time signal coding, nonreciprocal-beam radiation, nonreciprocal beamsteering amplification and advanced pattern-coding multiple access communication.
(© The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.)
Databáze: MEDLINE
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