A compact meander line elliptic split ring resonator based metamaterial for electromagnetic shielding
A miniatured NRI metamaterial comprised of meander line and elliptical split ring resonator is presented in this paper, offering a negative refractive index with small unit to wavelength ratio. The meander line technique miniatures the cell size, where the elliptical split ring resonator give the desired permeability. It has two double negative regime one is from 2.46 to 3.31 GHz (bandwidth of 850 MHz) and another one is from 3.85 to 4 GHz (bandwidth of 150 MHz). An effective medium ratio of 12.86, implies the novelty of the proposed design for S-band applications. The electrical length of the structure is 0.06λ×0.07λ×0.009λ. Moreover, the specific absorption rate is also analyzed on human head phantom. The analysis demonstrates an 35.93% reduction in the SAR value at 2100 MHz. Using negative refractive index metamaterials as a shield, the human body can be protected from electromagnetic radiations.
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Document Type: Research Article
Publication date: April 1, 2018
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