Intelligent Metasurfaces with Continuously Tunable Local Surface Impedance for Multiple Reconfigurable Functions
- Aalto Univ., Otaniemi (Finland)
- Foundation for Research & Technology- Hellas (FORTH), Crete (Greece)
- Foundation for Research & Technology- Hellas (FORTH), Crete (Greece); Aristotle Univ., Thessaloniki (Greece)
- Univ. of Massachusetts, Amherst, MA (United States)
- Foundation for Research & Technology- Hellas (FORTH), Crete (Greece); Univ. of Crete (Greece)
- Foundation for Research & Technology- Hellas (FORTH), Crete (Greece); Ames Lab. and Iowa State Univ., Ames, IA (United States)
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. Here, 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 critical influence on future space-time modulated metasurfaces and a multitude of applications, such as beam steering, energy harvesting, and communications.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
- Grant/Contract Number:
- 736876; 320081; AC02-07CH11358; AC02- 07CH11358
- OSTI ID:
- 1526290
- Alternate ID(s):
- OSTI ID: 1505879
- Report Number(s):
- IS-J-9928; PRAHB2
- Journal Information:
- Physical Review Applied, Vol. 11, Issue 4; ISSN 2331-7019
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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