Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 54, Issue 23, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/abeb97
Keywords
metamaterials; perfect absorber; polarization converter; lumped varactor diode
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Funding
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.99-2020.23]
- Fudan University, China
- Institute of Materials Science, Vietnam Academy of Science and Technology [CS.05/20-21]
- Korea Evaluation Institute of Industrial Technology [20016179]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20016179] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The research demonstrates a multifunctional metamaterial structure that can achieve absorption and polarization conversion functions efficiently in different modes. Through numerical studies and dimensional adjustments, a foundation is laid for further research and development.
We demonstrate a multifunctional metamaterial (MM) structure which can behave like a perfect absorber (PA) or polarization converter (PC) by controlling the lumped varactor. In PC mode, the MM revealed cross-polarization conversion in a frequency range from 2.0 to 7.0 GHz with a polarization-conversion ratio of nearly 100%. While in the PA state, triple-band high absorption was achieved. In addition, we investigated numerically the PA and PC modes by scaling down the geometrical dimension and orientation of the proposed unit cells, for further development of innovative methods in the THz range. Our work is expected to contribute to the realization of future multifunctional MM-based devices working in the GHz or higher-frequency range.
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