Abstract
A second-order cross fractal meta-material structure was designed and fabricated in this project. A kind of conventional magnetic material which works at low frequency was used as the absorber substrate. The simulation results demonstrated an absorber band below −10 dB between 4 and 8 GHz, and there was a 1.7 GHz expansion when the meta-material structure was not loaded. The experiment results indicated a similar absorber band between 3 and 5.5 GHz, which was 1.09 GHz wider than meta-material structure and the absorber band expanded by 88 %. Then we further analyzed the energy distribution on the surface of the meta-material structure which perfectly explained the expansion of the absorption band and implied a way to achieve a lower wider absorber band.
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Acknowledgments
This project supported by the National Defense Pre-Research Foundation of China under Grant No.9140A10030110HK5105.
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Huang, D., Kang, F., Dong, C. et al. A second-order cross fractal meta-material structure used in low-frequency microwave absorbing materials. Appl. Phys. A 115, 627–635 (2014). https://doi.org/10.1007/s00339-014-8374-7
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DOI: https://doi.org/10.1007/s00339-014-8374-7