Space-time-coding digital metasurfaces

Lei Zhang, Xiao Qing Chen, Shuo Liu, Qian Zhang, Jie Zhao, Jun Yan Dai, Guo Dong Bai, Xiang Wan, Qiang Cheng, Giuseppe Castaldi, Vincenzo Galdi () and Tie Jun Cui ()
Additional contact information
Lei Zhang: Southeast University
Xiao Qing Chen: Southeast University
Shuo Liu: Southeast University
Qian Zhang: Southeast University
Jie Zhao: Southeast University
Jun Yan Dai: Southeast University
Guo Dong Bai: Southeast University
Xiang Wan: Southeast University
Qiang Cheng: Southeast University
Giuseppe Castaldi: University of Sannio
Vincenzo Galdi: University of Sannio
Tie Jun Cui: Southeast University

Nature Communications, 2018, vol. 9, issue 1, 1-11

Abstract: Abstract The recently proposed digital coding metasurfaces make it possible to control electromagnetic (EM) waves in real time, and allow the implementation of many different functionalities in a programmable way. However, current configurations are only space-encoded, and do not exploit the temporal dimension. Here, we propose a general theory of space-time modulated digital coding metasurfaces to obtain simultaneous manipulations of EM waves in both space and frequency domains, i.e., to control the propagation direction and harmonic power distribution simultaneously. As proof-of-principle application examples, we consider harmonic beam steering, beam shaping, and scattering-signature control. For validation, we realize a prototype controlled by a field-programmable gate array, which implements the harmonic beam steering via an optimized space-time coding sequence. Numerical and experimental results, in good agreement, demonstrate good performance of the proposed approach, with potential applications to diverse fields such as wireless communications, cognitive radars, adaptive beamforming, holographic imaging.

Date: 2018
References: Add references at CitEc
Citations: View citations in EconPapers (13)

Downloads: (external link)
https://www.nature.com/articles/s41467-018-06802-0 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06802-0

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-018-06802-0

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().