Wavefront Control of 2D Curved Coding Metasurfaces Based on Extended Array Theory
Yang Zhou,
Jianliang Xie,
Haiyan Chen,
Li Zhang,
Yao Yan,
Fengxia Li,
Linbo Zhang,
Peiheng Zhou,
Longjiang Deng
Affiliations
Yang Zhou
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Jianliang Xie
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Li Zhang
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Yao Yan
Department of Development and Planning, North Automatic Control Technology Institute, Taiyuan, China
Fengxia Li
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Linbo Zhang
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Peiheng Zhou
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Longjiang Deng
National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
We extend the array theory to design 2D curved coding metasurfaces in order to achieve arbitrary wavefront control. The extended array theory establishes the relationship between wavefront and curved-surface, which provides a simple and effective method to obtain the layout of desired metasurfaces. According the theory, we present 2D curved metasurfaces with 3-bit coding elements. Both simulations and measurements demonstrate that the proposed designs can manipulate wavefront effectively. For normal incidence, the aperture efficiency of normal reflection is more than 90%. For general oblique incidence, the proposed designs almost meet the expectances, but the aperture efficiency decreases with the increase of desired scattering elevation angle. The curved coding metasurfaces are expected to be applied to many devices such as conformal antenna array.
