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Polarization-independent wideband meta-material absorber based on resistor-loaded hexagonal ring resonators

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  • Abhinav Kumar
  • Jayanta Ghosh

Abstract

A polarization-independent meta-material-based absorber with wideband response is presented in this study. The proposed absorber’s unit cell consists of a resistance-loaded metallic hexagonal ring and four rectangular metal strips placed inside the hexagonal ring patterned on the upper surface of a dielectric substrate. The absorber exhibits wideband absorption with absorptivity more than 90% in the frequency range 7.14 to 13.68 GHz. The Full-Width Half Maxima (FWHM) of the absorber is 8.8 GHz (5.2–14 GHz). The four-fold symmetrical structure of the absorber confirms polarization-insensitive behaviour. The absorber performance is also validated with fabrication and measurement. There is a fair degree of agreement between simulated and measured results. The novelty of the proposed absorber is having wideband absorption with high packing density due to its hexagonal shape. The metamaterial absorber finds its use in defence-related applications such as radar surveillance, stealth technology, terrestrial communications, and satellite communication.

Suggested Citation

  • Abhinav Kumar & Jayanta Ghosh, 2024. "Polarization-independent wideband meta-material absorber based on resistor-loaded hexagonal ring resonators," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 38(2), pages 264-281, January.
    • Handle: RePEc:taf:tewaxx:v:38:y:2024:i:2:p:264-281
    DOI: 10.1080/09205071.2023.2301563
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