Abstract
This paper presents the design and analysis of a metamaterial-based wideband microwave absorber in the C- and X-band, comprised of lumped resistors, having thicknesses of the order of 0.05 λ mm. The structure was micro-machined on the FR-4 sheet in a periodically arranged array of 15 × 15 unit cells. These unit cells have a dimension of 12 × 12 mm each. The proposed absorber design presents excellent broadband absorption characteristics with relative bandwidth (RBW) of 85.05% covering a bandwidth of 8.02 GHz ranging from 5.42 to 13.44 GHz. The absorption mechanism has been explained with the help of characteristic impedance and surface current densities in the operating region. The designed absorber shows polarization angle independency and wide incidence angle stability for the incident microwaves. The results of the prototype are compared with the simulated results illustrating excellent compatibility with the simulation results. Absorber structure may find its potential use in camouflage applications during war times.
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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
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Acknowledgements
This work is partially supported by the Higher Education Commission of Pakistan under grant No. 20-17107/NRPU/R&D/HEC/2021.We are highly indebted to Dr. Muhammad Saqlain who reviewed this article and gave valuable feedback.
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Khalid Majeed, Shahab Ahmad Niazi and Muhammad Abuzar Baqir conceived idea and design of the presented work. Khalid Majeed and Shahab Ahmad Niazi put forward theory and worked out results. Muhammad Abuzar Baqir, Abdul Khaliq and Muharrem Karaaslan verified the analytical methods employed. Khalid Majeed concluded the results with support of Shahab Ahmad Niazi. Moreover, Muharrem Karaaslan and Olcay Altintas fabricated the absorber and performed experimental work. Khalid Majeed. Muhammad Abuzar Baqir, Muharrem Karaaslan, Abdul Khaliq and Olcay Altintas wrote the manuscript with support of Shahab Ahmad Niazi. All authors deliberated the results and contributed to the final manuscript.
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Majeed, K., Niazi, S.A., Altintas, O. et al. Polarization-Insensitive Ultra-wideband Metamaterial Absorber for C- and X-bands. Plasmonics (2024). https://doi.org/10.1007/s11468-023-02165-5
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DOI: https://doi.org/10.1007/s11468-023-02165-5