Intelligent Metasurfaces with Continuously Tunable Local Surface Impedance for Multiple Reconfigurable Functions

Fu Liu, Odysseas Tsilipakos, Alexandros Pitilakis, Anna C. Tasolamprou, Mohammad Sajjad Mirmoosa, Nikolaos V. Kantartzis, Do Hoon Kwon, Maria Kafesaki, Costas M. Soukoulis, Sergei A. Tretyakov

Research output: Contribution to journalArticleScientificpeer-review

161 Citations (Scopus)

Abstract

Electromagnetic metasurfaces can be characterized as intelligent if they are able to perform multiple tunable functions, with the desired response being controlled by a computer influencing the individual electromagnetic properties of each metasurface inclusion. In this paper, we present an example of an intelligent metasurface that operates in the reflection mode in the microwave frequency range. We numerically show that, without changing the main body of the metasurface, we can achieve tunable perfect absorption and tunable anomalous reflection. The tunability features can be implemented using mixed-signal integrated circuits (ICs), which can independently vary both the resistance and reactance, offering complete local control over the complex surface impedance. The ICs are embedded in the unit cells by connecting two metal patches over a thin grounded substrate and the reflection property of the intelligent metasurface can be readily controlled by a computer. Our intelligent metasurface can have a significant influence on future space-time modulated metasurfaces and a multitude of applications, such as beam steering, energy harvesting, and communications.

Original languageEnglish
Article number044024
Number of pages10
JournalPhysical Review Applied
Volume11
Issue number4
DOIs
Publication statusPublished - 9 Apr 2019
MoE publication typeA1 Journal article-refereed

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  • VISORSURF: A Hardware Platform for Software-driven Functional Metasurfaces

    Tretiakov, S. (Principal investigator), Asadchy, V. (Project Member), Liu, F. (Project Member), Cuesta, F. (Project Member), Ptitcyn, G. (Project Member), Wang, X. (Project Member), Mirmoosa, M. (Project Member), Jayathurathnage, P. (Project Member) & Tzarouchis, D. (Project Member)

    01/01/201731/12/2020

    Project: EU: Framework programmes funding

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