Smart sensing metasurface with self-defined functions in dual polarizations

Nanophotonics

卷:9

Hong Qiao Ru¹  Cui Tie Jun¹  Liu Che¹  Bai Guo Dong¹  Jing Hong Bo¹  Gao Xin Xin¹  Ma Qian¹  Cheng Qiang¹ 

[1] State Key Laboratory of Millimeter Wave, Southeast University, Nanjing 210096, China;

关键词: programmable metasurface;    sensing -metasurface;    dual-polarization;    smart metasurface;   

DOI  :  10.1515/nanoph-2020-0052

来源: DOAJ

【 摘 要 】

For the intelligence of metamaterials, the -sensing mechanism and programmable reaction units are two important components for self-recognition and -determination. However, their realization still face great challenges. Here, we propose a smart sensing metasurface to achieve self-defined functions in the framework of digital coding metamaterials. A sensing unit that can simultaneously process the sensing channel and realize phase-programmable capability is designed by integrating radio frequency (RF) power detector and PIN diodes. Four sensing units distributed on the metasurface aperture can detect the microwave incidences in the x- and y-polarizations, while the other elements can modulate the reflected phase patterns under the control of a field programmable gate array (FPGA). To validate the performance, three schemes containing six coding patterns are presented and simulated, after which two of them are measured, showing good agreements with designs. We envision that this work may motivate studies on smart metamaterials with high-level recognition and manipulation.

【 授权许可】

Unknown