The Journal of Engineering (Jul 2019)

Equivalent circuit model of an ultra-wideband frequency selective surface composite absorbing material

  • Jiaao Yu,
  • Shirui Peng,
  • Hao Nan,
  • Jianhao Liu

DOI
https://doi.org/10.1049/joe.2019.0220

Abstract

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An equivalent circuit model of double hexagonal loops frequency selective surface (FSS) was established. The formulas of LC parameters were proposed with equivalent repetition period. The reflection frequency, transmission frequency, and the location of first modal interaction null were simulated, and the results showed a good agreement in full-wave simulation result. On this basis, an ultra-wideband composite absorbing material (CAM) was proposed, and its equivalent circuit model was also established. A sample was fabricated and measured to verify the validity of the model. The results showed a good ultra-wideband absorbing performance in the range of 1.9–8.9 GHz.

Keywords