• Flat lens antenna using gap waveguide technology at millimeter waves 

      Pérez Quintana, Dayan Upna Orcid; Bilitos, Christos; Ruiz-García, Jorge; González-Ovejero, David; Beruete Díaz, Miguel Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Full three-dimensional isotropic transformation media 

      García Meca, Carlos; Ortuño Molinero, Rubén Upna; Martí, J.; Martínez, Alejandro (IOP Publishing, 2014)   Artículo / Artikulua  OpenAccess
      We present a method that enables the implementation of full three-dimensional (3D) transformation media with minimized anisotropy. It is based on a special kind of shape-preserving mapping and a subsequent optimization ...
    • Hedgehog subwavelength hole arrays: control over the THz enhanced transmission 

      Navarro Cía, Miguel Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Beruete Díaz, Miguel Upna Orcid (Institute of Physics Publishing, 2013)   Artículo / Artikulua  OpenAccess
      By backing or sandwiching a holey metal layer with or between isotropic dielectric slabs, additional peaks of transmission within the long-wavelength regime arise as a result of the induced transverse magnetic (TM) or ...
    • Hyperbolic lens antenna in groove gap waveguide technology at sub-millimeter waves 

      Pérez Quintana, Dayan; Biurrun Quel, Carlos Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; González-Ovejero, David; Beruete Díaz, Miguel Upna Orcid (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Lensing system and Fourier transformation using epsilon-near-zero metamaterials 

      Navarro Cía, Miguel Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Sorolla Ayza, Mario Upna; Engheta, Nader (American Physical Society, 2012)   Artículo / Artikulua  OpenAccess
      Metamaterials and metastructures with effective relative permittivity near zero exhibit unusual wave properties such as uniform phase distributions across such domains. Here we discuss the possibility of using ε-near-zero ...
    • Meta-material behaviour of the new Coherently Radiating Periodic Structures (CORPS) 

      Betancourt Quiñones, Diego Upna; Ibáñez Loinaz, Asier; García Esparza, Raúl Upna; Río Bocio, Carlos del Upna Orcid (2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Metamaterial inspired electromagnetic bandgap filter for ultra-wide stopband screening devices of electromagnetic interference 

      Al-Hasan, Muath; Alibakhshikenari, Mohammad; Virdee, Bal S.; Sharma, Richa; Iqbal, Amjad; Althuwayb, Ayman Abdulhadi; Falcone Lanas, Francisco Upna Orcid (Springer, 2023)   Artículo / Artikulua  OpenAccess
      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. ...
    • Metamaterials and extraordinary transmission structures applied to microwave, millimeter and terahertz waves devices 

      Rodríguez Ulibarri, Pablo Upna Orcid (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Los metamateriales aparecen en los primeros años del siglo XXI como materiales artificiales que presentan un comportamiento electromagnético de alguna manera exótico. Al mismo tiempo, se descubre un nuevo fenómeno ...
    • Metamaterials and plasmonics applied to devices based on periodic structures at high frequencies: microwaves, terahertz and optical range 

      Pacheco-Peña, Víctor Upna Orcid (2016)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Esta tesis muestra el trabajo de investigación desarollado bajo el programa de doctorado “tecnología de las comunicaciones” de la Universidad Pública de Navarra (UPNA), para el grado de Doctor (PhD) en Ingenieria de ...
    • Metamaterials and their application in the performance enhancement of reconfigurable antennas: a review 

      Hussain, Musa; Awan, Wahaj Abbas; Alzaidi, Mohammed S.; Hussain, Niamat; Ali, Esraa Mousa; Falcone Lanas, Francisco Javier Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      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 ...
    • Metamaterials as super-substrate to enhance dipole antenna performances 

      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 ...
    • Metamaterials for enhanced light control: from high resolution focusing to invisibity 

      Orazbayev, Bakhtiyar (2015)   Trabajo Fin de Máster/Master Amaierako Lana  OpenAccess
      Artificial dielectrics and their descendants – metamaterials, have unusual electromagnetic parameters and provide more abilities than naturally available dielectrics for control of the light. The first experimental realization ...
    • Millimeter-wave extraordinary transmission: connection to metamaterials and technological applications 

      Beruete Díaz, Miguel Upna Orcid (2006)   Tesis doctoral / Doktoretza tesia  OpenAccess
      The phenomenon of Enhanced Transmission also happens in the millimeter wave range, as it happened in optical frequencies. This experimental fact shows that this is a phenomenon mostly linked to the periodic structure regardless ...
    • Near-zero-index media as electromagnetic ideal fluids 

      Liberal Olleta, Íñigo Upna Orcid; Lobet, Michaël; Li, Yue; Engheta, Nader (National Academy of Sciences, 2020)   Artículo / Artikulua  OpenAccess
      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 ...
    • Nonbianisotropic complementary split ring resonators as angular selective metasurfaces 

      Rodríguez Ulibarri, Pablo Upna Orcid; Beruete Díaz, Miguel Upna Orcid (Optical Society of America, 2017)   Artículo / Artikulua  OpenAccess
      In this work, a metasurface with unconventional angular performance and composed by a nonbianisotropic complementary split ring resonator (NB-CSRR) is analyzed numerically and experimentally. A numerical study comparing ...
    • Nonlinear metamaterial absorbers enabled by photonic doping of epsilon-near-zero metastructures 

      Nahvi, Ehsan; Liberal Olleta, Íñigo Upna Orcid; Engheta, Nader (American Physical Society, 2020)   Artículo / Artikulua  OpenAccess
      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 ...
    • On the performance of an ENZ-based sensor using transmission line theory and effective medium approach 

      Pacheco-Peña, Víctor Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Engheta, Nader (IOP Publishing, 2019)   Artículo / Artikulua  OpenAccess
      In this paper we perform an in-depth theoretical studyofa sensing platform based on epsilon-near- zero (ENZ) metamaterials. The structure proposed for sensing is a narrow metallic waveguide channel. An equivalent circuit ...
    • Perfeccionamiento de dispositivos a alta frecuencia usando metamateriales: lente binaria de Fresnel y lente super-oscilatoria 

      Legaria Lerga, Santiago (2017)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      El trabajo propuesto trata en primer lugar del diseño, simulación, construcción y medición experimental de dos lentes binarias cuadradas zonadas de Fresnel (BSFZPL, por sus siglas en inglés) utilizando metamateriales ...
    • Plasmonics and metamaterials at terahertz frequencies 

      Torres Landívar, Víctor Upna (2014)   Tesis doctoral / Doktoretza tesia  OpenAccess
      The research presented in this manuscript falls under the framework of metamaterials and plasmonics. It is mainly focused on applications at terahertz (THz) frequencies, a spectral band located between microwaves and ...
    • Quantum antenna arrays: the role of quantum interference on direction-dependent photon statistics 

      Liberal Olleta, Íñigo Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Ziolkowski, Richard W. (American Physical Society, 2018)   Artículo / Artikulua  OpenAccess
      We investigate the role of quantum interference phenomena on the characteristics of the fields radiated by an array of quantum emitters. In analogy to, but distinct from, classical outcomes, we demonstrate that the array ...

      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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