Volume 24 -                   ICOP & ICPET _ INPC _ ICOFS 2018, 24 - : 729-732 | Back to browse issues page

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A tradeoff between figure of merit and negative refractive index frequency bandwidth
Mahdi Askari * 1, Abdolnaser Zakeri2 , Alaeddin Sayahian Jahromi3
1- Salman Farsi University of Kazerun
2- Shiraz University
3- Zarghan Branch, Islamic Azad University
Abstract:   (2252 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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Type of Study: Research | Subject: Special
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