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Design and analysis of a multi-band miniaturized metamaterial absorber for wireless communication applications

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Abstract

This article presents a compact metamaterial absorber that operates at hepta-bands within the microwave frequency spectrum exhibiting more than 85% absorption at each band. The design of this absorber is based on the combination of three resonators that offer seven peaks at 3.15, 5.96, 8.73, 9.36, 13.22, 13.71, and 14.45 GHz with an absorption of 93.65, 85.75, 94.14, 99.51, 90.55, 97.87, and 98.68%, respectively. This absorber is characterized by a unit cell of size 0.168λ0 × 0.168λ0 and a thickness of λ0/59.5 calculated at 3.15 GHz. The overlap between the absorption bands provided by each resonator gives rise to a wide full wave at half maximum bandwidths of 0.20, 0.19, 0.64, and 2.04 GHz within microwave S, C, X, Ku-bands respectively. All three resonators utilized in designing the structure are symmetrical, which makes this structure insensitive to polarization for both transverse electric and transverse magnetic modes. To understand the origin of each absorption band, characteristic impedance, surface current, and distribution of the electromagnetic field are analyzed for all the absorption bands. Further, an electrical equivalent model (ECM) diagram is obtained by implying the ADS tool and the results of ECM analysis are compared with the results obtained by HFSS simulator. Finally, the prototype of the suggested design is fabricated and the measured results are compared with the theoretical results, which validates the design approach of this specific metamaterial (MTM)-based absorber model. The prescribed MTM absorber features effective characteristics for sensing and various wireless communication applications in microwave frequency regions.

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All the data generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Implemented through High Frequency Structure Simulator (HFSS) software.

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All authors contributed to the study, conception, design and simulations. Data collection, analysis, and simulation were performed by KE, NJ, and SD. Additional input to analysis, model improvement, and simulation was given by TI, BTPM, TEL-A. All authors contributed to complete the writing and presentation of the whole manuscript. All the authors have read and approved the final manuscript.

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Correspondence to Sudipta Das.

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Errajraji, K., Jebbor, N., Das, S. et al. Design and analysis of a multi-band miniaturized metamaterial absorber for wireless communication applications. Opt Quant Electron 56, 232 (2024). https://doi.org/10.1007/s11082-023-05813-6

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  • DOI: https://doi.org/10.1007/s11082-023-05813-6

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