Open AccessPlanar metamaterial based on hybridization for directive emission
Author(s) -
Abdelwaheb Ourir,
Redha Abdeddaïm,
Julien de Rosny
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.017545
Subject(s) - directivity , metamaterial , metamaterial antenna , optics , planar , patch antenna , microstrip antenna , materials science , permittivity , microstrip , antenna (radio) , acoustics , physics , telecommunications , computer science , optoelectronics , coaxial antenna , dielectric , computer graphics (images)
We present the first experimental demonstration of a high-directivity using a mu and epsilon near zero (MENZ) metamaterial. We use the hybridization principles to design a planar MENZ structure based on the fishnet unit cell. Resonant mode engineering achieves an effective permittivity and permeability that approaches zeros around 10.5 GHz simultaneously. We use this metamaterial as a superstrate of a microstrip patch antenna. We show that the directivity of the antenna is effectively enhanced compared to that of the patch antenna alone at the desired frequency.