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Dual-resonant polarization-independent and wide-angle metamaterial absorber in X-band frequency

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Abstract

This paper presents the analysis of dual-resonant polarization-independent metamaterial absorber with wide operating angle in X-band frequency. Two circular rings with different radius are used as resonating elements. The resonating elements which are made by copper are printed on two surfaces (top and bottom) of dual-layer FR4 substrate. At the middle layer, a full copper layer is placed. The performance of dual-resonant circular ring metamaterial absorber is observed using CST software. From simulated result, the proposed structure achieves high absorbance, which is 96.41 and 93.61 % at 9 and 11 GHz, respectively, for normal incident wave. For measurement, the resonant frequencies are found at 9.39 and 11.63 GHz with absorbance of 99.07 and 83.70 %, respectively. Then, the structure is also simulated for oblique incident angles. It is observed that the operating angle of the proposed metamaterial absorber is 70° for TE modes and 67° for TM modes. Measurement for oblique incident angle is done to validate the simulated result. Mutual agreement is achieved between simulated and measured result with slight frequency shift and ripples.

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Acknowledgments

The authors thank the Ministry of Higher Education (MOHE) for supporting the research work; Research Management Centre (RMC), School of Postgraduate Studies (SPS), Communication Engineering Department, Faculty of Electrical Engineering (FKE) and Universiti Teknologi Malaysia (UTM) Johor Bahru for the support of the research under Grant Nos. 4F360 and 05H35.

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Authors and Affiliations

  1. Advanced RF and Microwave Research Group, Department of Communication Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, FKE, UTM, Johor Bahru, 81310, Johor, Malaysia

    Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad & Noor Asmawati Samsuri

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  1. Osman Ayop
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  2. Mohamad Kamal A. Rahim
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  3. Noor Asniza Murad
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  4. Noor Asmawati Samsuri
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Correspondence to Mohamad Kamal A. Rahim.

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Ayop, O., Rahim, M.K.A., Murad, N.A. et al. Dual-resonant polarization-independent and wide-angle metamaterial absorber in X-band frequency. Appl. Phys. A 122, 374 (2016). https://doi.org/10.1007/s00339-016-9902-4

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  • DOI: https://doi.org/10.1007/s00339-016-9902-4

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