Chin. Phys. B ›› 2012, Vol. 21 ›› Issue (12): 127801-127801.doi: 10.1088/1674-1056/21/12/127801

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

A wideband metamaterial absorber based on magnetic resonator loaded with lumped resistors

程用志, 龚荣洲, 聂彦, 王鲜   

  1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2012-07-18 修回日期:2012-08-29 出版日期:2012-11-01 发布日期:2012-11-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51207060) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20090142110004).

A wideband metamaterial absorber based on magnetic resonator loaded with lumped resistors

Cheng Yong-Zhi (程用志), Gong Rong-Zhou (龚荣洲), Nie Yan (聂彦), Wang Xian (王鲜)   

  1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2012-07-18 Revised:2012-08-29 Online:2012-11-01 Published:2012-11-01
  • Contact: Nie Yan E-mail:nieyan@mail.hust.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51207060) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20090142110004).

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摘要： A wideband metamaterial absorber (MA) based on a magnetic resonator loaded with lumped resistors is presented. It is composed of a one-dimensional periodic array of double U shape structured magnetic resonators loaded with lumped resistors, dielectric substrate, and metal plate. We simulated, fabricated, measured, and analyzed the MA. The experimental results show that the reflectance (S11) is below -10 dB at normal incidence in the frequency range of 7.7 GHz-18 GHz, and the peak value is about -20 dB. Simulated power loss density distributions indicate that wideband absorption of the MA is mainly attributable to the lumped resistors in the magnetic resonator. Further investigations indicate that the distance between two unit cells along the magnetic field direction significantly influences the performance of the MA.

关键词: wideband, metamaterial absorber, lumped resistors

Abstract: A wideband metamaterial absorber (MA) based on a magnetic resonator loaded with lumped resistors is presented. It is composed of a one-dimensional periodic array of double U shape structured magnetic resonators loaded with lumped resistors, dielectric substrate, and metal plate. We simulated, fabricated, measured, and analyzed the MA. The experimental results show that the reflectance (S11) is below -10 dB at normal incidence in the frequency range of 7.7 GHz-18 GHz, and the peak value is about -20 dB. Simulated power loss density distributions indicate that wideband absorption of the MA is mainly attributable to the lumped resistors in the magnetic resonator. Further investigations indicate that the distance between two unit cells along the magnetic field direction significantly influences the performance of the MA.

Key words: wideband, metamaterial absorber, lumped resistors

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)