期刊
ANNALEN DER PHYSIK
卷 532, 期 5, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/andp.202000020
关键词
broadband polarization conversion; Janus metasurfaces; self feeding; strong coupling effects
资金
- China Postdoctoral Science Foundation [2019M650099]
- National Key Research and Development Program of China [2017YFA0700201, 2017YFA0700202, 2017YFA0700203]
- National Natural Science Foundation of China [11227904, 61631007, 61701107, 61701108, 61722106, 61731010, 61671414, 61603412, 61701523, 61801508, 61901113]
- 111 Project [111-2-05]
- Natural Science Foundational Research Fund of Shaanxi Province [2017JM6025]
- Young Talent fund of University Association for Science and Technology in Shaanxi Province [20170107]
- Key Program of National Natural Science Foundation of Shaanxi Province [2017KJX-24]
- National Defense Foundation of China [2201078]
- Aviation Science Foundation of China [20161996009]
- Fundamental Research Funds for the Central Universities [KYCX17_0091]
- Natural Science Foundation of Jiangsu Province [BK20190325]
- Postdoctoral Research Funding of Jiangsu Province [2019K219]
- Scientific Research Foundation of Graduate School of Southeast University [YBJJ1812]
A thin metasurface has shown powerful capabilities in controlling either incident electromagnetic (EM) waves or radiation waves, but is difficult for both. Here, a self-feeding Janus metasurface (SFJ-MS) is proposed to manipulate the incident EM waves and emit the radiated waves simultaneously, which can realize the polarization conversion of incident waves, scattering control, EM wave radiation, and radiation-beam steering. On the upper of SFJ-MS, a diagonal-split square ring and a rectangular patch with rotation for radiation are designed to introduce anisotropy in the meta-atom for converting the polarization of incident EM waves. On the bottom of SFJ-MS, a self-feeding microstructure converts the alternating current into the excitation of SFJ-MS to emit the EM waves to free space. The multiple functions of SFJ-MS are comprehensively substantiated by measured results, which are in agreements with the stringent simulations. This SFJ-MS, with lightweight, compact, low profile, and power-efficient features, can find potential applications in phased array radar systems, wireless communication systems, polarimetric radar imaging systems, and target detection systems.
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