An Ultra-wideband Metamaterial Absorber with Angular Stability

Authors

  • Ruofeng Xu School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China https://orcid.org/0000-0003-2627-3624
  • Xingyu Ma School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China
  • Xianglin Kong School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China
  • Shengjun Zhang Laboratory of Experimental Physics and Computational Mathematics Beijing, 100000 China
  • Jiaqi Liu Laboratory of Experimental Physics and Computational Mathematics Beijing, 100000 China
  • Lei Zhao School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China

DOI:

https://doi.org/10.13052/2024.ACES.J.390802

Keywords:

Angular stability, metamaterial, absorber, polarizations, ultrawideband

Abstract

In this paper, an ultra-wideband (UWB) microwave absorber with robust angular stability is proposed. Each unit of the structure consists of three-layer stacked resistive films to effectively broaden the absorption bandwidth. A metallic via is inserted in the center of the structure, which effectively guides the TM polarization oblique incident wave power to propagate vertically and be absorbed by the resistive films, thus enhancing the angular stability of TM polarization. Within the frequency range of 3.2 GHz to 35.5 GHz, the absorptivity surpasses 90% and the fractional bandwidth reaches 167%. Within an incident angle range of 0∘ to 60∘, the absorptivity of TE polarization remains at about 80%, and the TM polarization can be maintained at over 90%. The absorption mechanism was analyzed by surface power loss and surface current distribution. A sample was fabricated, and the measured results are consistent with the simulated ones. The absorber displays good angular stability and broad bandwidth, making it ideal for electromagnetic stealth applications.

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Author Biographies

Ruofeng Xu, School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China

Ruofeng Xu received the B.Sc. (2004) degree from Suzhou University in electronics and science and technology and the M.Sc. (2006) and Ph.D. (2010) degrees in electronic engineering from the University of Kent, UK. He was the visiting scholar (2018) for one year in Rutgers University, USA. Now he has been a lecturer in School of Information and Control Engineering, China University of Mining and Technology. His main research directions are microwave technology and application.

Xingyu Ma, School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China

Xingyu Ma has been a masters student at the School of Information and Control Engineering, China University of Mining and Technology. His main researches are on microwave absorbers, frequency select surfaces, etc.

Xianglin Kong, School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China

Xianglin Kong has a doctoral degree in Information and Control Engineering at China University of Mining and Technology. His main research interests include metamaterial absorbers and encoded metasurfaces.

Shengjun Zhang, Laboratory of Experimental Physics and Computational Mathematics Beijing, 100000 China

Shengjun Zhang has been a researcher at Laboratory of Experimental Physics and Computational Mathematics. His main research directions are on electromagnetic waves technologies, etc.

Jiaqi Liu, Laboratory of Experimental Physics and Computational Mathematics Beijing, 100000 China

Jiaqi Liu has been a researcher at Laboratory of Experimental Physics and Computational Mathematics. His main research directions are on electromagnetic waves technologies, etc.

Lei Zhao, School of Information and Control Engineering China University of Mining and Technology, Xuzhou 221116, China

Lei Zhao has been a professor and doctoral supervisor in School of Information and Control Engineering, China University of Mining and Technology. He has been a senior member of IEEE, member of the Antenna Branch of the China Electronics Society, and chairman of IEEE AP-S Chapter Xuzhou. His main researches are on RF microwave devices, new electromagnetic materials, vortex wave communication, computational electromagnetics, etc.

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Published

2024-08-31

How to Cite

[1]
R. . Xu, X. . Ma, X. . Kong, S. . Zhang, J. . Liu, and L. . Zhao, “An Ultra-wideband Metamaterial Absorber with Angular Stability”, ACES Journal, vol. 39, no. 08, pp. 675–682, Aug. 2024.

Issue

2024: Vol 39 Iss 8

Section

Metamaterials and Metadevices for Integrated Sensing, Imaging, and Communication