• 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 ...
    • Actividad electromiográfica (EMG) durante el pedaleo, su utilidad en el diagnóstico de la fatiga en ciclistas 

      Córdova Martínez, Alfredo; Nuin, Iván; Fernández-Lázaro, Diego; Latasa Zudaire, Iban Alexander Upna Orcid; Rodríguez Falces, Javier Upna Orcid (SEMED - FEMEDE, 2017)   Artículo / Artikulua  OpenAccess
      La fatiga muscular tiene múltiples definiciones, pero con una misión especial cual es la misión protectora, avisando al organismo sobre la debilidad o la aparición de una incapacidad funcional. En esta revisión se hace ...
    • Adaptive voltage control of the DC/DC boost stage in PV converters with small input capacitor 

      Urtasun Erburu, Andoni Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2013)   Artículo / Artikulua  OpenAccess
      In the case of photovoltaic (PV) systems, an adequate PV voltage regulation is fundamental in order to both maximize and limit the power. For this purpose, a large input capacitor has traditionally been used. However, when ...
    • 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. ...
    • Advances in residential design related to the influence of geomagnetism 

      Glaria, Francisco; Arnedo Gil, Israel Upna Orcid; Sánchez Ostiz, Ana (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      Since the origin of the Modern Movement, there has been a basic commitment to improving housing conditions and the well-being of occupants, especially given the prediction that 2/3 of humanity will reside in cities by 2050. ...
    • Alimentadores gaussianos en guía de onda rectangular 

      Teniente Vallinas, Jorge Upna Orcid; Gonzalo García, Ramón Upna Orcid; Río Bocio, Carlos del Upna Orcid (1999)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A new and efficient design of a rectangular corrugated waveguide mode converter, from TE10 mode in a smooth rectangular monomode waveguide to HE11 mode in a corrugated rectangular waveguide, is proposed. The main idea ...
    • All fiber interferometer for ice detection 

      Arozarena Arana, Jesús Antonio; Socorro Leránoz, Abián Bentor Upna Orcid; Del Villar, Ignacio Upna Orcid; Díaz Lucas, Silvia Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Optica Publishing Group, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This work presents an etched single-mode - multimode - single-mode structure that detects the solid-to-liquid change of state of the water due to an increased refractive index sensitivity within the 1.308 - 1.321 RIU range
    • All-dielectric periodic terajet waveguide using an array of coupled cuboids 

      Minin, Igor V.; Minin, Oleg V.; Pacheco-Peña, Víctor Upna Orcid; Beruete Díaz, Miguel Upna Orcid (AIP Publishing, 2015)   Artículo / Artikulua  OpenAccess
      In this paper, the recently proposed technique to produce photonic jets (terajets at terahertz (THz) frequencies) using 3D dielectric cuboids is applied in the design of a mesoscale cuboid-chain wave- guide. The chains are ...
    • All-fiber lasers through photonic crystal fibers 

      Rodrigues Pinto, Ana Margarida Upna; López-Amo Sáinz, Manuel Upna Orcid (Science Wise Publishing & De Gruyter, 2013)   Artículo / Artikulua  OpenAccess
      A review on all-fiber lasers based on photonic crystal fibers is presented. Photonic crystal fibers present improved features beyond what conventional optical fibers can offer. Due to their geometric versatility, photonic ...
    • All-metallic ε-near-zero (ENZ) lens based on ultra-narrow hollow rectangular waveguides: experimental results 

      Orazbayev, Bakhtiyar Upna Orcid; Torres Landívar, Víctor Upna; Pacheco-Peña, Víctor Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid; Teniente Vallinas, Jorge Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Sorolla Ayza, Mario Upna; Navarro Cía, Miguel Upna Orcid; Engheta, Nader (IEEE, 2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Here we perform numerical and experimental investigation of plano-concave all-metallic ε-near-zero (ENZ) lens with operational frequency f = 144 GHz. The ENZ lens is achieved by stacking an array of narrow hollow rectangular ...
    • All-PM fiber loop mirror interferometer analysis and simultaneous measurement of temperature and mechanical vibration 

      Leandro González, Daniel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      In this work, a new all-polarization maintaining (PM) fiber loop mirror interferometer is proposed and validated as temperature and mechanical vibration sensor. The scheme employs the arms of a PM coupler as communication ...
    • Amorphous glass-coated ferromagnetic wires in microwave engineering 

      Liberal Olleta, Íñigo Upna Orcid (2013)   Tesis doctoral / Doktoretza tesia  OpenAccess
      En esta tesis se ha estudiado el uso de hilos ferromagnéticos recubiertos de vidrio en ingeniería de microondas. Para este fin, se han formulado modelos analíticos y equivalentes circuitales de la interacción entre un ...
    • Análisis de efecto de un superestrato left-handed en la apertura de una guía rectangular 

      Sáenz Sáinz, Elena Upna; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Maagt, Peter de (2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, results showing the experimental verification of the gain improvement of a rectangular waveguide antenna when a left-handed material (LHM) is used as superstrate are presented. The improvement has been ...
    • Análisis del comportamiento de esquemas de modulación adaptativos en LTE 

      Torres Landívar, Víctor Upna; Esparza Alfaro, Fermín Upna; Falcone Lanas, Francisco Javier Upna Orcid (2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, the behaviour of several modulation schemes used in 3GPP R8 or Long Term Evolution (LTE) Systems is analyzed. In order to increase the capacity of future mobile networks, high order modulation schemes like ...
    • Análisis, diseño y control de convertidores multinivel 

      Burguete Archel, Eduardo Upna (2016)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Esta tesis doctoral se enmarca en el proyecto “Azimut: Energía Eólica Offshore 2020" cuyo objetivo es el desarrollo de nuevas estructuras de conversión que permitan alcanzar una mayor potencia y tensión para aplicaciones ...
    • Analysis and description of HOLTIN service provision for AECG monitoring in complex indoor environments 

      Led Ramos, Santiago Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Martínez de Espronceda Cámara, Miguel Upna Orcid; Serrano Arriezu, Luis Javier Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (MDPI, 2013)   Artículo / Artikulua  OpenAccess
      In this work, a novel ambulatory ECG monitoring device developed in-house called HOLTIN is analyzed when operating in complex indoor scenarios. The HOLTIN system is described, from the technological platform level to its ...
    • Analysis and synthesis of vibrato in lyric singers 

      Arroabarren Alemán, Ixone Upna; Carlosena García, Alfonso Upna Orcid (2002)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper two aspects of the vibrato signal characterisation are presented. First, an analysis method, which breaks down the musical signal into its different partials, and decomposes them into two separate ...
    • Analysis matrix for smart cities 

      Branchi, Pablo Emilio Upna; Fernández Valdivielso, Carlos Upna; Matías Maestro, Ignacio Upna Orcid (MDPI, 2014)   Artículo / Artikulua  OpenAccess
      The current digital revolution has ignited the evolution of communications grids and the development of new schemes for productive systems. Traditional technologic scenarios have been challenged, and Smart Cities have ...
    • Analysis of bluetooth-based wireless sensor networks performance in hospital environments 

      López Iturri, Peio Upna Orcid; Led Ramos, Santiago Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Serrano Arriezu, Luis Javier Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (MDPI, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, a method to analyze the performance of Bluetooth-based Wireless Sensor Networks (WSN) deployed within hospital environments is presented. Due to the complexity that this kind of scenarios exhibit in terms of ...
    • Analysis of one-dimensional photonic band gap structures with a liquid crystal defect towards development of fiber-optic tunable wavelength filters 

      Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Claus, Richard O. (Optical Society of America, 2003)   Artículo / Artikulua  OpenAccess
      A theoretical analysis of a fiber optical photonic band gap based tunable wavelength filter is presented. The design presented here is based on the quarter wave reflector with a liquid crystal defect layer in the middle ...

      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).
      Logo MinisterioLogo Fecyt