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Askari M, Zakeri A, Sayahian Jahromi A. A tradeoff between figure of merit and negative refractive index frequency bandwidth . ICOP & ICPET _ INPC _ ICOFS 2018; 24 :729-732
URL: http://opsi.ir/article-1-1456-en.html
URL: http://opsi.ir/article-1-1456-en.html
1- Salman Farsi University of Kazerun
2- Shiraz University
3- Zarghan Branch, Islamic Azad University
2- Shiraz University
3- Zarghan Branch, Islamic Azad University
Abstract: (2831 Views)
In this paper in addition to introducing a novel metamaterial structure for creating negative refractive index with a high figure of merit (FOM), we investigate effects of changing the lattice constant on FOM and negative refractive index frequency bandwidth. For this structure, at terahertz frequency range, a very high FOM of 66.8 is observed which is a high and notable value in this frequency range. We observe that by increasing the lattice constant, the FOM decreases but the negative refractive index frequency bandwidth increases, which means a tradeoff between the FOM and the bandwidth
Keywords: metamaterial, electromagnetic resonance, negative refractive index, frequency bandwidth, electromagnetic loss
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