Buscar
Mostrando ítems 11-20 de 31
Circuit approach to the minimal configuration of terahertz anomalous extraordinary transmission
(American Institute of Physics, 2011)
Artículo / Artikulua,
In this letter we present an in-depth circuit analysis of anomalous extraordinary transmission ET
through subwavelength slit and hole arrrays loaded by a dielectric slab. We show the key role played
by the thickness of the ...
3D-printed 96 GHz bull’s-eye antenna with off-axis beaming
(IEEE, 2017)
Artículo / Artikulua,
Reducing the profile, footprint and weight of antennas embarked on aircrafts, drones or satellites has been a long pursued objective. Here we tackle this issue by developing a millimeter-wave 96 GHz elliptical Bull’s-Eye ...
Broadband frequency and angular response of a sinusoidal bull’s eye antenna
(IOP Publishing, 2016)
Artículo / Artikulua,
A thorough experimental study of the frequency and beaming angle response of a metallic
leaky-wave bull’s eye antenna working at 77 GHz with a sinusoidally corrugated profile
is presented. The beam scanning property of ...
Zoned near-zero refractive index fishnet lens antenna: steering millimeter waves
(AIP Publishing, 2014)
Artículo / Artikulua,
A zoned fishnet metamaterial lens is designed, fabricated, and experimentally demonstrated at millimeter wavelengths to work as a negative near-zero refractive index lens suitable for compact lens antenna configurations. ...
Zoned fishnet lens antenna with reference phase for side lobe reduction
(IEEE, 2015)
Artículo / Artikulua,
Reduction of first side lobe level and nulls in artificial fishnet metalenses is accomplished here by applying the reference phase concept along with the zoning technique. Higher focusing efficiency is achieved for a ...
Exploiting the dispersion of the double-negative-index fishnet metamaterial to create a broadband low-profile metallic lens
(Optical Society of America, 2015)
info:eu-repo/semantics/article,
Metamaterial lenses with close values of permittivity and
permeability usually display low reflection losses at the expense of narrow
single frequency operation. Here, a broadband low-profile lens is designed
by exploiting ...
Dipolar resonances in conductive carbon micro-fibers probed by near-field terahertz spectroscopy
(AIP Publishing, 2015)
info:eu-repo/semantics/article,
We observe dipole resonances in thin conductive carbon micro-fibers by detecting an enhanced
electric field in the near-field of a single fiber at terahertz (THz) frequencies. Time-domain analysis
of the electric field ...
Planar holographic metasurfaces for terahertz focusing
(Springer Nature, 2015)
info:eu-repo/semantics/article,
Scientists and laymen alike have always been fascinated by the ability of lenses and mirrors to control light.
Now, with the advent of metamaterials and their two-dimensional counterpart metasurfaces, such
components can ...
Soret fishnet metalens antenna
(Springer Nature, 2015)
info:eu-repo/semantics/article,
At the expense of frequency narrowing, binary amplitude-only diffractive optical elements emulate refractive
lenses without the need of large profiles. Unfortunately, they also present larger Fresnel reflection loss ...
Annular apertures in metallic screens as extraordinary transmission and frequency selective surface structures
(IEEE, 2017)
Artículo / Artikulua,
A 2-D periodic array of annular apertures (or ring slots) is studied using an accurate circuit model. The model accounts for distributed and dynamic effects associated with the excitation of high-order modes operating above ...