Title :
Wire grid metamaterial for directive emission
Author :
Barroso, Joaquim J. ; Tomaz, Antonio ; Hasar, Ugur C.
Author_Institution :
Nat. Inst. for Space Res. (INPE), São José dos Campos, Brazil
Abstract :
In this work are reported the electromagnetic properties of an arrangement of periodic metallic grids devised to provide in the 12.5-20.0 GHz frequency range a refractive index less than unity with view to enhance the functionalities of a Ku-band horn antennas. The ultra-refractive behavior of the metamaterial structure is demonstrated by the impedance and refractive index values retrieved from simulated scattering parameters.
Keywords :
metamaterial antennas; microwave antennas; microwave metamaterials; refractive index; Ku-band horn antennas; directive emission; electromagnetic properties; frequency 12.5 GHz to 20.0 GHz; impedance; metamaterial structure; refractive index; simulated scattering parameters; ultrarefractive behavior; wire grid metamaterial; Directive antennas; Electromagnetics; Metamaterials; Permittivity; Refractive index; Slabs; antenna directivity enhancement; artificial dielectric; metamaterial; near-zero refractive index;
Conference_Titel :
Microwave & Optoelectronics Conference (IMOC), 2013 SBMO/IEEE MTT-S International
Conference_Location :
Rio de Janeiro
DOI :
10.1109/IMOC.2013.6646460
