Intelligent Metasurface with Frequency Recognition for Adaptive Manipulation of Electromagnetic Wave

Overview

Journal Nanophotonics

Publisher De Gruyter

Date 2024 Dec 5

PMID 39634624

Authors

Hai Peng Wang

Yun Bo Li

He Li

Jia Lin Shen

Shu Yue Dong

Shi Yu Wang

Kai Nan Qi

Qian Ma

Shi Jin

Si Jia Li

Tie Jun Cui

Affiliations

Soon will be listed here.

Abstract

Due to the strong ability of recognizing electromagnetic (EM) environment and adaptively control of EM waves, the intelligent metasurfaces have received great attention recently. However, the intelligent metasurface with frequency recognition for adaptive manipulation of the EM waves has not been studied. Here, we propose a frequency-recognition intelligent metasurface to precisely control the spatial EM waves under the agile frequencies with the help of a real-time radio-frequency sensor and an adaptive feedback control system. An active meta-atom is presented to reach 2 bit phase coding and 1 bit amplitude coding capacities to control the amplitude and phase independently. Experimental results demonstrate that the metasurface can recognize different frequency of the incoming wave with very high resolution, and can adaptively realize the self-defined multiple frequency agilities to manipulate the reflected EM waves without any human participation. As example, the intelligent metasurface with frequency recognition can adaptively operate wave absorption at 5.36 GHz, reflection to normal direction at 5.38 GHz, deflection to -30° at 5.40 GHz, random diffusion at 5.42 GHz, and deflection to +33° at 5.44 GHz by detecting the incoming frequency at the resolution of 0.02 GHz.

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