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Abstract <p>This research suggests an ultra-thin quad-band metamaterial absorber (QMMA) with ten absorption peaks for multitudinous advanced mmWave wireless applications. A sophisticated design integrating three resonators enhances the performance of the proposed absorber by optimizing its absorption efficiency across multiple frequency bands, resulting in an increased relative absorption bandwidth, making it suitable for mmWave applications. The prescribed absorber efficiently absorbs a wide range of frequencies within the specified range of 20–40&#xa0;GHz. A total of 10 absorption peaks is attained with a minimum absorption of 0.7 within four broad absorption bands. The initial band is centered at 21.80&#xa0;GHz, with a maximum absorption of 0.9678 and a full-width half-maximum bandwidth (FWHM) of 2.15&#xa0;GHz, ranging from 20.97&#xa0;GHz to 23.12&#xa0;GHz. The second band, centered at 24.99&#xa0;GHz, achieves an absorption of 0.9848 and an FWHM bandwidth of 2.71&#xa0;GHz from 24.42&#xa0;GHz to 27.13&#xa0;GHz. At 31.71&#xa0;GHz, the absorber achieves an absorption of 0.8187 within a narrow FWHM bandwidth of 0.66&#xa0;GHz (31.27–31.93&#xa0;GHz). The final band includes a wider spectrum from 34&#xa0;GHz to 40&#xa0;GHz and exhibits a maximum absorption of 0.9977 at 38.78&#xa0;GHz. The designed absorber demonstrates polarization-sensitive properties, which could be utilized for polarimetric filters, polarization-sensitive sensors, detectors, or polarizers. A prototype of the absorber model has been fabricated and measured to verify the theoretical findings. The recommended multiband metamaterial absorber (MMA) could be a viable solution for various advanced sensing technologies, 5G communication, and radar systems.</p> Graphical Abstract <p></p>

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An Ultra-Thin Polarization-Sensitive Quad-Band Metamaterial Absorber (QMMA) with Ten Absorption Peaks for Diversified Advanced Millimeter-Wave Wireless Applications

  • 期刊论文

  • 发表日期：

    2025年9月23日

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  • Ouafae Elalaouy,
  • Sudipta Das,
  • Mohammed El Ghzaoui,
  • Abeer D. Algarni,
  • Boddapati Taraka Phani Madhav,
  • Jaouad Foshi

摘要

Abstract

This research suggests an ultra-thin quad-band metamaterial absorber (QMMA) with ten absorption peaks for multitudinous advanced mmWave wireless applications. A sophisticated design integrating three resonators enhances the performance of the proposed absorber by optimizing its absorption efficiency across multiple frequency bands, resulting in an increased relative absorption bandwidth, making it suitable for mmWave applications. The prescribed absorber efficiently absorbs a wide range of frequencies within the specified range of 20–40 GHz. A total of 10 absorption peaks is attained with a minimum absorption of 0.7 within four broad absorption bands. The initial band is centered at 21.80 GHz, with a maximum absorption of 0.9678 and a full-width half-maximum bandwidth (FWHM) of 2.15 GHz, ranging from 20.97 GHz to 23.12 GHz. The second band, centered at 24.99 GHz, achieves an absorption of 0.9848 and an FWHM bandwidth of 2.71 GHz from 24.42 GHz to 27.13 GHz. At 31.71 GHz, the absorber achieves an absorption of 0.8187 within a narrow FWHM bandwidth of 0.66 GHz (31.27–31.93 GHz). The final band includes a wider spectrum from 34 GHz to 40 GHz and exhibits a maximum absorption of 0.9977 at 38.78 GHz. The designed absorber demonstrates polarization-sensitive properties, which could be utilized for polarimetric filters, polarization-sensitive sensors, detectors, or polarizers. A prototype of the absorber model has been fabricated and measured to verify the theoretical findings. The recommended multiband metamaterial absorber (MMA) could be a viable solution for various advanced sensing technologies, 5G communication, and radar systems.

Graphical Abstract