Frontiers of Optoelectronics

, Volume 10, Issue 2, pp 124–131 | Cite as

Broadband and conformal metamaterial absorber

Research Article
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Abstract

In this study, a new broadband and conformal metamaterial absorber using two flexible substrates was proposed. Simulation results showed that the proposed absorber exhibited an absorption band from 6.08 to 13.04 GHz and a high absorption of 90%, because it was planar. The absorber was broadband as its relative absorption bandwidth was 72.8%. Moreover, the proposed absorber was insensitive to the polarization of the TE and TM waves. The absorber was ultra-thin; its total thickness was only 0.07l at the lowest operating frequency. Furthermore, different regions of absorption can be adjusted by lumping and loading two resistors onto the polyimide film, respectively. Moreover, compared with the conventional microwave absorber, the absorption bandwidth of the proposed absorber can be broadened and enhanced when it was bent and conformed to the surface of objects. Experimental and simulation results were in agreement. The proposed absorber is a promising absorbing element in scientific and technical applications because of its broadband absorption, polarization insensitivity, and flexible substrates.

Keywords

absorber metamaterials flexible broadband conformal 

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Notes

Acknowledgments

This work was supported by the Fundamental Research Funds for the Central Universities (No. NJ20160008), the National Natural Science Foundation of China (Grant No. 61471368), the Natural Science Foundation of Jiangsu Province of China (No. BK20150757), the Open Research Program in China’s State Key Laboratory of Millimeter Waves (No. K201609), the China Postdoctoral Science Foundation (No. 2016M601802), and the Jiangsu Planned Projects for Postdoctoral Research Funds (No. 1601009B).

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Copyright information

© Higher Education Press and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Xiangkun Kong
    • 1
    • 2
  • Junyi Xu
    • 1
  • Jin-jun Mo
    • 3
  • Shaobin Liu
    • 1
  1. 1.Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information EngineeringNanjing University of Aeronautics and AstronauticsNanjingChina
  2. 2.State Key Laboratory of Millimeter WavesSoutheast UniversityNanjingChina
  3. 3.College of Electronic Science and EngineeringNational University of Defense TechnologyChangshaChina

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