Multi-band metamaterial absorber made of multi-gap SRRs structure
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This paper presents a multi-band metamaterial absorber comprising three multi-gap split-ring resonators (SRRs) with different radii and ring widths, designed in combinatorial approach. Experiments demonstrate that it can perform absorption peaks at three resonant frequencies 7.10 GHz, 10.04 GHz, and 17.44 GHz with the absorption of 99.90%, 99.91%, and 99.68%, respectively. The physical mechanism of metamaterial absorber was explained through numerical calculation and simulation, which showed that three absorption peaks were caused respectively by the three four-gap SRRs. The absorber is insensitive to incident angles and polarization states, so it has broad prospect of application.
KeywordsResonant Frequency Ring Width Copper Film Metamaterial Absorber Effective Impedance
The work is supported partly by the National Natural Science Foundation of China under Contract No. 60906030, and partially by self-determined research funds of CCNU from colleges’ basic research and operation of MOE Grant No. CCNU10A02021.
- 12.L. Huang, H. Chen, Prog. Electromagn. Res. 113, 103 (2011) Google Scholar