期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 68, 期 11, 页码 7507-7516出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2020.2996826
关键词
Complementary split-ring resonators (C-SRRs); metasurface; microwave airy beam
资金
- Natural National Science Foundation of China [61601093, 61701082, 61971113, 61901095]
- National Postdoctoral Program for Innovative Talents [BX201700043]
- China Postdoctoral Science Foundation [2017M620423]
- National Key Research and Development Program [2018YFB1802102, 2018AAA0103203]
- Guangdong Provincial Research and Development Plan in Key Areas [2019B010141001, 2019B010142001]
- Sichuan Provincial Science and Technology Planning Program of China [2018HH0034, 2019YFG0418, 2019YFG0120, 2018JY0246]
- Natural Science Foundation of Shaanxi Province [2017KJXX-24]
- Ministry of Education-China Mobile Research Fund [MCM20180104]
- Yibin Science and Technology Planning Program [2018ZSF001, 2019GY001]
- Fundamental Research Funds for the Central Universities [ZYGX2019Z022]
In this article, a 2-D Airy beam is experimentally generated at microwave frequency by using a simple and thin metasurface composed of a single-layer of square C-shaped complementary split-ring resonators (C-SRRs). It is shown that the cross-polarization transmission coefficient, including the magnitude and phase, of a single C-SRR unit can be controlled by modifying the single C-SRR unit rotation angle, and this property is herein used to reshape the impinging field in accordance with the desired 2-D Airy beam profile. The designed metasurface is then fabricated to measure the most significant features of the generated microwave Airy beam, including quasi-nondiffraction, self-bending, and self-healing properties, thus achieving good results in agreement with those predicted by theory. The generated microwave 2-D Airy beam with its properties can be widely applied for high-efficiency wireless power transfer, wireless covert communication, and directional communication.
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