Independent and dynamic manipulation of surface waves radiation for quadruplex polarization channels enabled by programmable coding metasurface
Author:
Wang Zhenxu12ORCID, Liu Tonghao3ORCID, Liang Jian-Gang2, Wang Jiafu1, Meng Yueyu1, Fu Xinmin1, Chen Hongya1, Zhu Ruichao1ORCID, Chu Zuntian1, Cui Yina1, Sun Huiting1, Wang Shaojie1, Ma Hua1, Qu Shaobo1
Affiliation:
1. Shaanxi Key Laboratory of Artificially-Structured Functional Materials and Devices , Air Force Engineering University , Xi’an , Shaanxi 710051 , China 2. Air and Missile Defense College , Air Force Engineering University , Xi’an , Shaanxi 710051 , People’s Republic of China 3. Zhijian Laboratory , Rocket Force University of Engineering , Xi’an 710025 , China
Abstract
Abstract
Flexible manipulation of surface waves (SWs) radiation has been continuously intriguing enormous interests of researchers due to its promising application prospects, and metasurfaces exhibit unparalleled capability to efficiently control SWs radiation. However, existing schemes still suffer from the bottlenecks of single radiation channel and immutable radiation pattern, which are difficult to satisfy the requirements of high-integration intelligent metadevices. Herein, an ingenious strategy of the SWs radiation metadevice is proposed to independently and dynamically manipulate SWs directional radiation in four polarization channels. The waveguide port and the guided wave structure are designed to excite and propagate the desired SWs, and the programmable coding metasurface can independently convert SWs into x-polarized radiation waves, y-polarized radiation waves, left-handed circular polarized radiation waves and right-handed circular polarized radiation waves and dynamically control the corresponding radiation angles by adjusting the ON/OFF states of two positive-intrinsic-negative diodes in each spin-decoupled meta-atom. Numerous simulation and experimental results of the proof-of-concept prototype are in good agreement with the theoretical predictions, which verify the feasibility of our proposed methodology. The innovative design of four-channel SWs radiation metadevice with high radiation efficiency and broad radiation bandwidth offers an excellent platform for flexibly manipulating SWs radiation, and possesses tremendous potential in engineering application.
Funder
National Key Research and Development Program of China Natural Science Basic Research Program of Shaanxi Province National Natural Science Foundation of China
Publisher
Walter de Gruyter GmbH
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