J. Mater. Sci. Technol. ›› 2024, Vol. 178: 162-170.DOI: 10.1016/j.jmst.2023.08.037

• Research Article • Previous Articles     Next Articles

Cut-wire metasurface embedded in magnetic mediums for ultra-wideband polarization-insensitive absorber with environmental adaptability

Jiangyong Liua, Yuping Duana,*, Tuo Zhanga, Yanan Liub, Wei Chena, Yupeng Shia, Lingxi Huanga, Huifang Panga   

  1. aKey Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, China;
    bKey Laboratory of Functional Nanocomposites of Shanxi Province, College of Materials Science and Engineering, North University of China, Taiyuan 030051, China
  • Received:2023-03-24 Revised:2023-07-31 Accepted:2023-08-22 Published:2024-04-10 Online:2023-09-26
  • Contact: * E-mail address: duanyp@dlut.edu.cn (Y. Duan).

Abstract: Metamaterials with artificial designability and perfect absorption provide a novel design method for the manipulation and attenuation of microwaves. However, owing to the limitations of meta-atomic resonance effect and the lossless medium, it is difficult to achieve effective microwave absorption in a broadband frequency range. Hence, an ultra-wideband metamaterial absorber (UWMA) composed of two magnetic media and a metasurface was designed, and the absorption bandwidth of 2.9 to 18 GHz for 90% absorptivity under normal incidence was achieved, covering almost the entire S, C, X, and Ku bands. Through detailed investigation of equivalent circuit, equivalent medium theory, electromagnetic field distribution and front-back interface interference, the internal physical working mechanism was clarified essentially. In addition, the multi-environment adaptabilities of the proposed absorber, including polarization sensitivity, large angle incidence, dual-station radar stealth, bearing capacity and corrosion resistance, were analyzed. The proposed metamaterial absorber presents an effective way to achieve ultra-wideband absorption and compatibility with environmental adaptability, and provides a new way of thinking for intelligent full-band stealth technology.

Key words: Metamaterial, Microwave absorber, Ultra-wideband, Environmental adaptability, Polarization-insensitive