• A study of super-oscillatory lenses of high frecuencies using metamaterials 

      Legaria Lerga, Santiago (2020)   Trabajo Fin de Máster/Master Amaierako Lana  OpenAccess
      The first part of this work deals with the design, numerical demonstration and experimental characterization of an ultra-thin super-oscillatory lens (SOL) based on metamaterials (MTMs) at the Terahertz range, with a ...
    • Accurate circuit modeling of fishnet structures for negative-index-medium applications 

      Torres Landívar, Víctor Upna; Mesa, Francisco; Navarro Cía, Miguel Upna Orcid; Rodríguez Berral, Raúl; Beruete Díaz, Miguel Upna Orcid; Medina, Francisco (IEEE, 2016)   Artículo / Artikulua  OpenAccess
      Metallic plates with a two-dimensional (2D) periodic distribution of sub-wavelength apertures are known to exhibit extraordinary transmission of electromagnetic waves. Stacking two or more of such plates gives place to the ...
    • Advanced metamaterials for high resolution focusing and invisibility cloaks 

      Orazbayev, Bakhtiyar Upna Orcid (2016)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Los metamateriales, descendientes de los dieléctricos artificiales, tienen parámetros electromagnéticos inusuales y proporcionan más posibilidades que los dieléctricos naturales para el control de la propagación de la luz. ...
    • 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 Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Loecker, Claudius; Bertuch, Thomas; Marcotegui, José Antonio Upna; Maci, Stefano (IEEE, 2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 Upna Orcid; Quevedo-Teruel, O. (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 

      Jarauta Ayensa, Eduardo Upna (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 ...
    • Desfasadores para microstrip empleando metamateriales 

      Cantora Álvarez, Alejandro; Gonzalo García, Ramón Upna Orcid (2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 Upna; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Maagt, Peter de (2006)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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. Upna Orcid; Herrera, Pilar; Beruete Díaz, Miguel Upna Orcid (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Design of terahertz sensors based on metasurfaces for fungal infection detection 

      Jáuregui López, Irati (2016)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      El trabajo propuesto trata sobre el diseño de sensores en la banda de terahercios para la detección de “thin films” y microorganismos, en particular de hongos. En primer lugar, se ha realizado un estudio profundo de ...
    • Dipolos y metamateriales: mejora de las características de radiación 

      Sáenz Sáinz, Elena Upna; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Maagt, Peter de (2004)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Diseño, simulación, fabricación y medida de lentes de metamaterial acopladas a antenas de bocina 

      Osuna Ruiz, David (2015)   Proyecto Fin de Carrera / Ikasketen Amaierako Proiektua  OpenAccess
      En este proyecto fin de carrera se presenta un sistema formado por una antena de bocina y una lente metálica de metamaterial basada en transmisión extraordinaria. Como ya se ha demostrado en el pasado, la aplicación de ...
    • Electroinductive waves in chain of complementary metamaterial elements 

      Beruete Díaz, Miguel Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid; Freire, M. J.; Marqués, R.; Baena, J.D. (AIP Publishing, 2006)   Artículo / Artikulua  OpenAccess
      Electronductive waves supported by chains of resonators drilled on a metallic plate are presented. Propagation of energy comes as a consequence of the electric coupling between these resonators. Therefore, these waves ...
    • 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. Upna Orcid; Pérez Escudero, José Manuel Upna Orcid; Liberal Olleta, Íñigo Upna Orcid; Beruete Díaz, Miguel Upna Orcid (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Epsilon-near-zero metalenses operating in the visible 

      Pacheco-Peña, Víctor Upna Orcid; Navarro Cía, Miguel Upna Orcid; Beruete Díaz, Miguel Upna Orcid (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Several converging lenses working in the permittivity near to zero (ENZ) regime at optical frequencies are designed using an array of metal-dielectric-metal plasmonic waveguides. These plasmonic waveguides show a dispersive ...
    • Estudio sobre resonadores en tecnología microstrip como sensor de medida de grosor de materiales a 24GHz 

      Lezaun Capdevila, Carlos (2019)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      Diversas aplicaciones industriales requieren de la caracterización y medición de materiales con alta precisión. En las últimas décadas se han investigado métodos para realizar dichas mediciones ...
    • Experimental demonstration of a millimeter-wave metallic ENZ lens based on the energy squeezing principle 

      Torres Landívar, Víctor Upna; Orazbayev, Bakhtiyar Upna Orcid; Pacheco-Peña, Víctor Upna Orcid; Teniente Vallinas, Jorge Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Navarro Cía, Miguel Upna Orcid; Sorolla Ayza, Mario Upna (IEEE, 2015)   Artículo / Artikulua  OpenAccess
      The performance of an epsilon-near zero (ENZ) plano-concave lens is experimentally demonstrated and verified at the D-band of the millimeter-waves. The lens is comprised of an array of narrow metallic waveguides near cut-off ...
    • Experimental demonstration of deeply subwavelength dielectric sensing with epsilon-near-zero (ENZ) waveguides 

      Beruete Díaz, Miguel Upna Orcid; Engheta, Nader; Pacheco-Peña, Víctor Upna Orcid (American Institute of Physics, 2022)   Artículo / Artikulua  OpenAccess
      In this Letter, an all metallic sensor based on ε-near-zero (ENZ) metamaterials is studied both numerically and experimentally when working at microwave frequencies. To emulate an ENZ medium, a sensor is made by using a ...
    • Experimental demonstration of metamaterials application for mitigating scan blindness in phased array antennas 

      Rodríguez Ulibarri, Pablo Upna Orcid; Crépin, Thomas; Martel, Cédric; Boust, Fabrice; Falcone Lanas, Francisco Javier Upna Orcid; Loecker, Claudius; Herbertz, Kai; Bertuch, Thomas; Dousset, Thierry; Martinaud, Jean-Paul; Maci, Stefano; Marcotegui, José Antonio Upna; Beruete Díaz, Miguel Upna Orcid (EDP Sciences, 2016)   Artículo / Artikulua  OpenAccess
      This paper presents two metamaterial-inspired solutions to mitigate the scan blindness effects in a phased array antenna. In the first solution, portions of a bed of nails are introduced in the radome to prevent the excitation ...
    • Experimental realization of an epsilon-near-zero graded-index metalens at terahertz frequencies 

      Pacheco-Peña, Víctor Upna Orcid; Engheta, Nader; Kuznetsov, Sergei A.; Gentselev, Alexandr; Beruete Díaz, Miguel Upna Orcid (American Physical Society, 2017)   Artículo / Artikulua  OpenAccess
      The terahertz band has been historically hindered by the lack of efficient generators and detectors, but a series of recent breakthroughs have helped to effectively close the “terahertz gap.” A rapid development of terahertz ...

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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