Listar Comunicaciones y ponencias de congresos - Biltzarrak eta Argitalpenak por tema "Metamaterials"
Mostrando ítems 1-12 de 12
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Blind spot mitigation in phased array antenna using metamaterials
Crépin, Thomas; Martel, Cédric; Gabard, Benjamin; Boust, Fabrice; Martinaud, Jean-Paul; Dousset, Thierry; Rodríguez Ulibarri, Pablo
; Beruete Díaz, Miguel ; Loecker, Claudius; Bertuch, Thomas; Marcotegui, José Antonio ; Maci, Stefano (IEEE, 2014)
Contribución a congreso / Biltzarrerako ekarpena 
In this work, a metaradome based on a fakir’s bed of nails is designed and tested in order to suppress the blind directions of a 100-element antenna array. The antenna is a microstrip array designed to operate in X-band. ... -
Compact pillbox reflector based on geodesic lens
Pérez Quintana, Dayan; Chen, Q.; Beruete Díaz, Miguel ; Quevedo-Teruel, O. (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 ... -
Desfasadores para microstrip empleando metamateriales
Cantora Álvarez, Alejandro; Gonzalo García, Ramón (2005)
Contribución a congreso / Biltzarrerako ekarpena
In this paper an application of LH materials at microwave frequencies (10GHz) is presented. A compact quarter-wave impedance transformer is proposed using alternating sections of left handed media (LHM) and conventional ... -
Design of a planar meta-surface based on dipoles and wires for antenna applications
Sáenz Sáinz, Elena; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Maagt, Peter de (2006)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, the design of a planar meta-surface based on dipoles and wires is presented. The unit cell is formed by three independent layers, which contain two parallel dipoles and one wire. The behaviour of these ... -
Design of multi-layered radiative cooling structures using evolutionary algorithms
Lezaun Capdevila, Carlos; Jorajuría, Tania; Torres García, Alicia E. ; Herrera, Pilar; Beruete Díaz, Miguel (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 ... -
Dipolos y metamateriales: mejora de las características de radiación
Sáenz Sáinz, Elena; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Maagt, Peter de (2004)
Contribución a congreso / Biltzarrerako ekarpena
In this work, pass band properties of Left Handed Media (LHM) are demonstrated. These properties have been used in order to make a LHM super-substrate that is put over a dipole antenna. This super-substrate is going to ... -
Enhancing the infrared and visible emission properties of calcium silicate hydrate for radiative cooling using metamaterials
Lezaun Capdevila, Carlos; Dolado, J. S.; Torres García, Alicia E. ; Pérez Escudero, José Manuel ; Liberal Olleta, Íñigo ; Beruete Díaz, Miguel (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 ... -
Flat lens antenna using gap waveguide technology at millimeter waves
Pérez Quintana, Dayan ; Bilitos, Christos; Ruiz-García, Jorge; González-Ovejero, David; Beruete Díaz, Miguel (IEEE, 2021)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, a flat lens antenna using Gap Waveguide (GW) technology working in the millimeter waves band was designed. The metamaterial lens is fed using a Groove Gap Waveguide (GGW) horn antenna in order to achieve a ... -
Hyperbolic lens antenna in groove gap waveguide technology at sub-millimeter waves
Pérez Quintana, Dayan; Biurrun Quel, Carlos ; Ederra Urzainqui, Íñigo ; González-Ovejero, David; Beruete Díaz, Miguel (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 ... -
Meta-material behaviour of the new Coherently Radiating Periodic Structures (CORPS)
Betancourt Quiñones, Diego; Ibáñez Loinaz, Asier; García Esparza, Raúl ; Río Bocio, Carlos del (2005)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, the study of the new Coherently Radiating Periodic Structures (CORPS) like a Metamaterial sets out. The shape of the structure under study is composed by two different layers, one layer is an array of ... -
Metamaterials as super-substrate to enhance dipole antenna performances
Sáenz Sáinz, Elena; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Maagt, Peter de (2004)
Contribución a congreso / Biltzarrerako ekarpena
In this work, pass band properties of Left Handed Media (LHM) are demonstrated. These properties have been used in order to make a LHM super-substrate that is put over a dipole antenna. This super-substrate is going to ... -
Research on metamaterials for antenna applications
Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Iriarte Galarregui, Juan Carlos ; Martínez Pascual, Beatriz ; Sáenz Sáinz, Elena ; Cantora Álvarez, Pablo; Maagt, Peter de (2005)
Contribución a congreso / Biltzarrerako ekarpena
During the last 20 years a lot of attention has been paid to apply Electromagnetic Band Gap (EBG) technology in different frequency ranges, from microwaves to optics. EBG technology is based on the use of periodic structures ...
