Diamond-Shaped Hole Array as a Fishnet Metamaterial for Negative Refraction

SABAH C., Yilmaz A.

13th Conference on Microwave Techniques (COMITE), Pardubice, Çek Cumhuriyeti, 17 - 18 Nisan 2013, ss.162-165, (Tam Metin Bildiri) identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/comite.2013.6545062
  • Basıldığı Şehir: Pardubice
  • Basıldığı Ülke: Çek Cumhuriyeti
  • Sayfa Sayıları: ss.162-165
  • Anahtar Kelimeler: Metamaterial, fishnet, negative refraction, microwave K-band
  • Orta Doğu Teknik Üniversitesi Kuzey Kıbrıs Kampüsü Adresli: Evet

Özet

In this paper, a new design of hole array in a double-layer periodic arrangement is introduced and investigated both numerically and experimentally for the negative refractive index. The structure shows similar behavior to that of the corresponding fishnet metamaterials. The effective constitutive parameters are revealed by using retrieval procedure to verify the negative refraction nature of the proposed structure. A relatively high figure of merit (FOM = -Re (n)/Im (n) = 70.05) is achieved at the K-band (18-26.5) frequency region. Finally, a rescaled design is presented to demonstrate the capability of structure for high frequency regime.