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<p>In this paper, we introduce a window-shaped symmetric split-ring resonator (SRR) microwave metamaterial absorber (MA) designed for stealth and sensing applications across the S, C, X, and Ku bands. The window-shaped copper resonators are supported by a 0.035-mm thick annealed copper layer and separated by 1.6-mm thick FR-4 dielectric layers. The absorber’s unit cell has an electrical dimension of 0.099λ × 0.099λ, with its performance determined at 2.96&#xa0;GHz. CST Microwave Studio simulation results show six distinct absorption peaks at 2.96&#xa0;GHz, 4.13&#xa0;GHz, 5.45&#xa0;GHz, 6.71&#xa0;GHz, 10.29&#xa0;GHz, and 12.57&#xa0;GHz. The absorption efficiencies of these peaks are 98%, 99.7%, 99.5%, 96.2%, 95.1%, and 99.9%, respectively. The electromagnetic wave absorption behavior of the absorber is subsequently examined using an equivalent circuit model, including a comprehensive study of the E-field, the H-field, and the surface current distributions at each absorption peak. Hence, parametric analyses are carried out in order to optimize absorption frequencies. Additionally, the proposed design exhibits nearly perfect absorption for both TE and TM polarizations over a wide angle of incidence (up to 60°). An equivalent circuit design developed with Advanced Design System (ADS) software provides precise absorb control. Our metamaterial’s structure used for the detection of cervical and fibrotic detection and the sensitivity is about 10&#xa0;GHz/RIU. The microwave metamaterial absorber is designed especially for Emi shielding, stealth and sensing applications, resulting in a significant reduction in detectability in military and defense applications.</p>

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Design and Fabrication Performance of a Multifunctional Metamaterials Hexa-Band Absorber for Simultaneously Achieving EMI Shielding, Stealth, and Sensing Applications

  • 期刊论文

  • 发表日期：

    2025年7月3日

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  • Altaf Hussain,
  • Jian Dong,
  • Yadgar I. Abdulkarim,
  • Ronghua Shi,
  • Berker Colak,
  • Muharrem Karaaslan

摘要

In this paper, we introduce a window-shaped symmetric split-ring resonator (SRR) microwave metamaterial absorber (MA) designed for stealth and sensing applications across the S, C, X, and Ku bands. The window-shaped copper resonators are supported by a 0.035-mm thick annealed copper layer and separated by 1.6-mm thick FR-4 dielectric layers. The absorber’s unit cell has an electrical dimension of 0.099λ × 0.099λ, with its performance determined at 2.96 GHz. CST Microwave Studio simulation results show six distinct absorption peaks at 2.96 GHz, 4.13 GHz, 5.45 GHz, 6.71 GHz, 10.29 GHz, and 12.57 GHz. The absorption efficiencies of these peaks are 98%, 99.7%, 99.5%, 96.2%, 95.1%, and 99.9%, respectively. The electromagnetic wave absorption behavior of the absorber is subsequently examined using an equivalent circuit model, including a comprehensive study of the E-field, the H-field, and the surface current distributions at each absorption peak. Hence, parametric analyses are carried out in order to optimize absorption frequencies. Additionally, the proposed design exhibits nearly perfect absorption for both TE and TM polarizations over a wide angle of incidence (up to 60°). An equivalent circuit design developed with Advanced Design System (ADS) software provides precise absorb control. Our metamaterial’s structure used for the detection of cervical and fibrotic detection and the sensitivity is about 10 GHz/RIU. The microwave metamaterial absorber is designed especially for Emi shielding, stealth and sensing applications, resulting in a significant reduction in detectability in military and defense applications.