中国物理B ›› 2024, Vol. 33 ›› Issue (2): 24101-024101.doi: 10.1088/1674-1056/acea64

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A flexible ultra-broadband multi-layered absorber working at 2 GHz-40 GHz printed by resistive ink

Tao Wang(汪涛)1,†, Yu-Lun Yan(闫玉伦)1, Gong-Hua Chen(陈巩华)1, Ying Li(李迎)2,‡, Jun Hu(胡俊)1, and Jian-Bo Mao(毛剑波)1   

  1. 1 School of Microelectronics, Hefei University of Technology, Hefei 230601, China;
    2 Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Photoelectric Technology, Hefei University of Technology, Hefei 230027, China
  • 收稿日期:2023-04-26 修回日期:2023-06-26 接受日期:2023-07-26 出版日期:2024-01-16 发布日期:2024-01-16
  • 通讯作者: Tao Wang, Ying Li E-mail:taowang@hfut.edu.cn;liying87@hfut.edu.cn
  • 基金资助:
    Project supported by the China Post-doctoral Science Foundation (Grant No. 2020M671834) and the Anhui Province Post-doctoral Science Foundation, China (Grant No. 2020A397).

A flexible ultra-broadband multi-layered absorber working at 2 GHz-40 GHz printed by resistive ink

Tao Wang(汪涛)1,†, Yu-Lun Yan(闫玉伦)1, Gong-Hua Chen(陈巩华)1, Ying Li(李迎)2,‡, Jun Hu(胡俊)1, and Jian-Bo Mao(毛剑波)1   

  1. 1 School of Microelectronics, Hefei University of Technology, Hefei 230601, China;
    2 Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Photoelectric Technology, Hefei University of Technology, Hefei 230027, China
  • Received:2023-04-26 Revised:2023-06-26 Accepted:2023-07-26 Online:2024-01-16 Published:2024-01-16
  • Contact: Tao Wang, Ying Li E-mail:taowang@hfut.edu.cn;liying87@hfut.edu.cn
  • Supported by:
    Project supported by the China Post-doctoral Science Foundation (Grant No. 2020M671834) and the Anhui Province Post-doctoral Science Foundation, China (Grant No. 2020A397).

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摘要： A flexible extra broadband metamaterial absorber (MMA) stacked with five layers working at 2 GHz-40 GHz is investigated. Each layer is composed of polyvinyl chloride (PVC), polyimide (PI), and a frequency selective surface (FSS), which is printed on PI using conductive ink. To investigate this absorber, both one-dimensional analogous circuit analysis and three-dimensional full-wave simulation based on a physical model are provided. Various crucial electromagnetic properties, such as absorption, effective impedance, complex permittivity and permeability, electric current distribution and magnetic field distribution at resonant peak points, are studied in detail. Analysis shows that the working frequency of this absorber covers entire S, C, X, Ku, K and Ka bands with a minimum thickness of 0.098 λmax (λmax is the maximum wavelength in the absorption band), and the fractional bandwidth (FBW) reaches 181.1%. Moreover, the reflection coefficient is less than -10 dB at 1.998 GHz-40.056 GHz at normal incidence, and the absorptivity of the plane wave is greater than 80% when the incident angle is smaller than 50°. Furthermore, the proposed absorber is experimentally validated, and the experimental results show good agreement with the simulation results, which demonstrates the potential applicability of this absorber at 2 GHz-40 GHz.

关键词: extra broadband, physical model, flexible metamaterial absorber, multi-layer, frequency selective surface

Abstract: A flexible extra broadband metamaterial absorber (MMA) stacked with five layers working at 2 GHz-40 GHz is investigated. Each layer is composed of polyvinyl chloride (PVC), polyimide (PI), and a frequency selective surface (FSS), which is printed on PI using conductive ink. To investigate this absorber, both one-dimensional analogous circuit analysis and three-dimensional full-wave simulation based on a physical model are provided. Various crucial electromagnetic properties, such as absorption, effective impedance, complex permittivity and permeability, electric current distribution and magnetic field distribution at resonant peak points, are studied in detail. Analysis shows that the working frequency of this absorber covers entire S, C, X, Ku, K and Ka bands with a minimum thickness of 0.098 λmax (λmax is the maximum wavelength in the absorption band), and the fractional bandwidth (FBW) reaches 181.1%. Moreover, the reflection coefficient is less than -10 dB at 1.998 GHz-40.056 GHz at normal incidence, and the absorptivity of the plane wave is greater than 80% when the incident angle is smaller than 50°. Furthermore, the proposed absorber is experimentally validated, and the experimental results show good agreement with the simulation results, which demonstrates the potential applicability of this absorber at 2 GHz-40 GHz.

Key words: extra broadband, physical model, flexible metamaterial absorber, multi-layer, frequency selective surface

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
42.25.Ja (Polarization) 42.25.Bs (Wave propagation, transmission and absorption) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))