Numerical and experimental investigation of fishnet-based metamaterial in a X-band waveguide

C Sabah (1) , H G Roskos (1)

1 Physikalisches Institut [Frankfurt/Main]

In this paper, a fishnet-based metamaterial for the microwave X-Band frequencies is introduced and investigated both numerically and experimentally. The main innovation introduced here is that the structure is composed of dielectric and metallic parts in such a way that there is no connection between the metallic part of the metamaterial and the waveguide. The homogenous effective medium theory is employed for the characterization of the structure. A left-handed region is identified using the simulated and experimental results. The performance of the structure is described by a figure-of-merit calculation. The measured results are in good agreement with the simulated ones which show that the proposed metamaterial operates well like a fishnet metamaterial at around 10 GHz.

Mots clés: Metamaterial; fishnet; negative refractive index; single and double negative; left-handed; microwave; waveguide experiment; 41.20.Jb; 81.05.Xj; 78.67.Pt

C Sabah, H G Roskos. Numerical and experimental investigation of fishnet-based metamaterial in a X-band waveguide. Journal of Physics D: Applied Physics, 2011, 44 (25), pp.255101. ⟨10.1088/0022-3727/44/25/255101⟩. ⟨hal-00627538⟩