Microwave response of octagon-shaped parallel plates: Low-loss metamaterial

作者：Sabah C^*

来源：Optics Communications, 2012, 285(21-22): 4549-4552.

DOI：10.1016/j.optcom.2012.06.043

• Metamaterial
• Fishnet
• Parallel plates
• Negative refraction
• Single and double negative
• Microwave

A very low-loss metamaterial formed by a pair of homogeneous octagon-shaped parallel plates separated by a dielectric substrate is presented to achieve simultaneous negative permittivity and permeability in the microwave region. The double-negative behavior with a high figure of merit (FOM=vertical bar Re(n)/Im(n)vertical bar =80 at 24.7 GHz) leads to reduced losses in this proposed metamaterial. The high quality feature of the structure can make the applications of the negative refractive index metamaterial more efficient and applicable, such as perfect- or super-lenses at microwave frequencies since FOM approximate to 64.5, where the real part of the refractive index approximate to - 1 at 25.3 GHz.

• 出版日期2012-10-1