A dual-band polarization insensitive metamaterial absorber with split ring resonator
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A dual-band polarization insensitive absorber has been proposed . Unlike the previous dual band absorber composed of composite structures, only one square metal ring with a slit at the middle of each side can be used to achieve the dual-band absorption. The calculated results show two distinct absorption peaks of 0.96 at 10 GHz and 0.99 at 20 GHz. In addition, the positions of the two peaks are strongly influenced by the width of the slit (g). More importantly, the absorptions of the two peaks keep higher than 0.9 while g changing. The dual-band absorber may have many potential applications in scientific and technological areas because of its excellent absorption characteristics and concise structure.
KeywordsMetamaterial absorber Split ring resonator Numerical simulation
This work was supported in part by the State Key Program for Basic Research of China grants (2011CB922004, 2013CB632705); the National Natural Science Foundation of China grants (10990104, 60976092 and 61290301); the Fund of Shanghai Science and Technology Foundation grants (10JC1416100).
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