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

SABAH C.

OPTICS COMMUNICATIONS, cilt.285, sa.21-22, ss.4549-4552, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 285 Sayı: 21-22
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.optcom.2012.06.043
  • Dergi Adı: OPTICS COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4549-4552
  • Anahtar Kelimeler: Metamaterial, Fishnet, Parallel plates, Negative refraction, Single and double negative, Microwave, NEGATIVE-INDEX METAMATERIAL, REFRACTIVE-INDEX, PARAMETERS
  • Orta Doğu Teknik Üniversitesi Kuzey Kıbrıs Kampüsü Adresli: Evet

Özet

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. (C) 2012 Elsevier B.V. All rights reserved.