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Nonlinear metamaterial absorbers enabled by photonic doping of epsilon-near-zero metastructures
(American Physical Society, 2020)
info:eu-repo/semantics/article,
We theoretically demonstrate an approach for designing absorbers with strongly intensity-dependent absorption. The proposed absorbers consist of a spacer layer between a top resistive sheet and an underlying metallic ...
Metamaterial inspired electromagnetic bandgap filter for ultra-wide stopband screening devices of electromagnetic interference
(Springer, 2023)
Artículo / Artikulua,
Presented here is a reactively loaded microstrip transmission line that exhibit an ultra-wide
bandgap. The reactive loading is periodically distributed along the transmission line, which is
electromagnetically coupled. ...
Hyperbolic lens antenna in groove gap waveguide technology at sub-millimeter waves
(IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena,
In this paper, a flat hyperbolic lens antenna using Groove Gap Waveguide (GGW) technology is designed at 300 GHz. A GGW horn antenna is used to feed the metamaterial lens placed in a parallel plate waveguide (PPW), in order ...
Near-zero-index media as electromagnetic ideal fluids
(National Academy of Sciences, 2020)
info:eu-repo/semantics/article,
Near-zero-index (NZI) supercoupling, the transmission of electromagnetic waves inside a waveguide irrespective of its shape, is a counterintuitive wave effect that finds applications in optical interconnects and engineering ...
Shaping the quantum vacuum with anisotropic temporal boundaries
(De Gruyter, 2022)
Artículo / Artikulua,
Temporal metamaterials empower novel forms of wave manipulation with direct applications to quantum state transformations. In this work, we investigate vacuum amplification effects in anisotropic temporal boundaries. Our ...
Metamaterials and their application in the performance enhancement of reconfigurable antennas: a review
(MDPI, 2023)
Artículo / Artikulua,
Metamaterials exhibit properties in terms of subwavelength operation or phase manipulation, among others, that can be used in a variety of applications in 5G communication systems. The future and current 5G devices demand ...
Compact pillbox reflector based on geodesic lens
(IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena,
We propose a pillbox antenna in combination with a geodesic lens at 60 GHz. The antenna is implemented in a dual-layer parallel plate waveguide. The waves from a geodesic lens in a first layer, after being reflected by a ...
Coupling in metamaterial structures and devices
(2023)
Tesis doctoral / Doktoretza tesia,
En esta tesis se abordan algunos de los retos de las comunicaciones actuales
desde el punto de vista de diseño de dispositivos. La tesis se estructura en
tres capítulos: En el primero de ellos se presentan las líneas ...
Enhancing the infrared and visible emission properties of calcium silicate hydrate for radiative cooling using metamaterials
(IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena,
Two periodic structures composed of metal cylinders with different orientations are used to improve the solar reflection of calcium silicate hydrate (CSH) while maintaining its atmospheric emission. Interesting effects ...
Design of multi-layered radiative cooling structures using evolutionary algorithms
(IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena,
In this work we present a novel way to design thinfilm radiative cooling metamaterials based on genetic algorithms.
Three simulations with different design constraints have been
done, resulting in three structures that ...