中国物理B ›› 2018, Vol. 27 ›› Issue (12): 127801-127801.doi: 10.1088/1674-1056/27/12/127801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Broadband microwave absorption properties of polyurethane foam absorber optimized by sandwiched cross-shaped metamaterial

Long-Hui He(贺龙辉), Lian-Wen Deng(邓联文), Heng Luo(罗衡), Jun He(贺君), Yu-Han Li(李宇涵), Yun-Chao Xu(徐运超), Sheng-Xiang Huang(黄生祥)   

  1. School of Physics and Electronics, Central South University, Changsha 410083, China
  • 收稿日期:2018-07-09 修回日期:2018-09-03 出版日期:2018-12-05 发布日期:2018-12-05
  • 通讯作者: Lian-Wen Deng E-mail:denglw@csu.edu.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0204600), the National Natural Science Foundation of China (Grant No. 51802352), and the Fundamental Research Funds for the Central Universities of Central South University, China (Grant No. 2018zzts355).

Broadband microwave absorption properties of polyurethane foam absorber optimized by sandwiched cross-shaped metamaterial

Long-Hui He(贺龙辉), Lian-Wen Deng(邓联文), Heng Luo(罗衡), Jun He(贺君), Yu-Han Li(李宇涵), Yun-Chao Xu(徐运超), Sheng-Xiang Huang(黄生祥)   

  1. School of Physics and Electronics, Central South University, Changsha 410083, China
  • Received:2018-07-09 Revised:2018-09-03 Online:2018-12-05 Published:2018-12-05
  • Contact: Lian-Wen Deng E-mail:denglw@csu.edu.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0204600), the National Natural Science Foundation of China (Grant No. 51802352), and the Fundamental Research Funds for the Central Universities of Central South University, China (Grant No. 2018zzts355).

摘要:

The effect of a sandwiched cross-shaped metamaterial absorber (CMMA) on microwave absorption properties of the double-layered polyurethane foam absorber (PUFA) is investigated. Combining with the sandwiched CMMA, the bandwidth of -10-dB reflection loss for PUFA is broadened from 7.4 GHz to 9.1 GHz, which is attributed to the overlap of two absorption peaks originating from CMMA and PUFA, respectively. The values of the two absorption peaks located at 10.15 GHz and 14.7 GHz are -38.44 dB and -40.91 dB, respectively. Additionally, distribution of surface current, electromagnetic field and power loss density are introduced to investigate the absorption mechanism of the CMMA. The electromagnetic field distribution of the double-layered PUFA and the three-layered hybrid absorber are comparatively analyzed to ascertain the influence of CMMA. The results show that the proposed hybrid absorber can be applied to the anti-electromagnetic interference and stealth technology.

关键词: polyurethane foam absorber, metamaterial, broadband microwave, absorption mechanism

Abstract:

The effect of a sandwiched cross-shaped metamaterial absorber (CMMA) on microwave absorption properties of the double-layered polyurethane foam absorber (PUFA) is investigated. Combining with the sandwiched CMMA, the bandwidth of -10-dB reflection loss for PUFA is broadened from 7.4 GHz to 9.1 GHz, which is attributed to the overlap of two absorption peaks originating from CMMA and PUFA, respectively. The values of the two absorption peaks located at 10.15 GHz and 14.7 GHz are -38.44 dB and -40.91 dB, respectively. Additionally, distribution of surface current, electromagnetic field and power loss density are introduced to investigate the absorption mechanism of the CMMA. The electromagnetic field distribution of the double-layered PUFA and the three-layered hybrid absorber are comparatively analyzed to ascertain the influence of CMMA. The results show that the proposed hybrid absorber can be applied to the anti-electromagnetic interference and stealth technology.

Key words: polyurethane foam absorber, metamaterial, broadband microwave, absorption mechanism

中图分类号:  (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

  • 78.20.Ci
41.20.Jb (Electromagnetic wave propagation; radiowave propagation) 42.25.Ja (Polarization)