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

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Fu Liu

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

Research units

  • Institute of Electronic Structure and Laser
  • Aristotle University of Thessaloniki
  • University of Massachusetts
  • University of Crete
  • Iowa State University

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.

Details

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

ID: 33291725