Envíos recientes

  • Fiber-optic lossy mode resonance sensors 

    Arregui San Martín, Francisco Javier Upna; Del Villar, Ignacio Upna; Corres Sanz, Jesús María Upna; Goicoechea Fernández, Javier Upna; Ruiz Zamarreño, Carlos Upna; Elosúa Aguado, César Upna; Hernáez Sáenz de Zaitigui, Miguel Upna; Rivero Fuente, Pedro José Upna; Socorro Leránoz, Abián Bentor Upna; Urrutia Azcona, Aitor Upna; Sánchez Zábal, Pedro Upna; Zubiate Orzanco, Pablo Upna; López Torres, Diego Upna; Acha Morrás, Nerea de Upna; Matías Maestro, Ignacio Upna (Elsevier, 2014)   Contribución a Congreso / Biltzarrerako ekarpena  OpenAccess
    In the last 4 years, experimental evidences about the potential use of optical sensors based on Lossy Mode Resonances (LMR) have been presented in the literature. These LMR sensors have some similarities with Surface ...
  • Comparative study of nonparametric and parametric PV models to forecast AC power output of PV plants 

    Almeida, Marcelo Pinho; Muñoz Escribano, Mikel Upna; Parra Laita, Íñigo de la Upna; Perpiñán, Óscar; Narvarte Fernández, Luis (EU PVSEC, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper, a comparison between two approaches to predict the AC power output of PV systems is carried out in terms of forecast performance. Each approach uses one of the two main types of PV modeling, parametric and ...
  • Tools for the high penetration of PV systems in the EU electrical networks: results of PVCROPS Project 

    Narvarte Fernández, Luis; Marroyo Palomo, Luis Upna; Collares Pereira, Manuel; Tyutyundzhiev, Nicolay; Conlon, Michael; Bouzzan, N.; Guelbenzu Michelena, Eugenio; González, R.; Desportes, Adrien; Simmonds, Gary; Wilkin, Benjamin (EU PVSEC, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The Solar Energy Industrial Initiative established the objective of integrating PV into the grid to provide up to 12% of the EU electricity demand. The FP7 project PVCROPS has developed solutions to allow the high penetration ...
  • Characterization of near-ground radio propagation channel for wireless sensor network with application in smart agriculture 

    Klaina, Hicham; Alejos, Ana; Aghzout, Otman; Falcone Lanas, Francisco Javier Upna (MDPI, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this contribution, we present a narrowband radio channel model for a scenario wherein the radio link operates under near-ground conditions, occurring on a ZigBee wireless sensor networks applied to smart agriculture. ...
  • Characterization of radio propagation channel in urban vehicle to infrastructure environments to support WSNs 

    Granda, Fausto; Azpilicueta Fernández de las Heras, Leyre Upna; Vargas Rosales, César; López Iturri, Peio Upna; Aguirre Gallego, Erik Upna; Astrain Escola, José Javier Upna; Villadangos Alonso, Jesús Upna; Falcone Lanas, Francisco Javier Upna (MDPI, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Vehicular ad hoc Networks (VANETs) enable vehicles to communicate with each other as well as with roadside units (RSUs). Although there is a significant research effort in radio channel modelling focused in vehicle to ...
  • Analysis of bluetooth-based wireless sensor networks performance in hospital environments 

    López Iturri, Peio Upna; Led Ramos, Santiago Upna; Aguirre Gallego, Erik Upna; Azpilicueta Fernández de las Heras, Leyre Upna; Serrano Arriezu, Luis Javier Upna; Falcone Lanas, Francisco Javier Upna (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 ...
  • Implementation and analysis of a wireless sensor network-based pet location monitoring system for domestic scenarios 

    Aguirre Gallego, Erik Upna; López Iturri, Peio Upna; Azpilicueta Fernández de las Heras, Leyre Upna; Astrain Escola, José Javier Upna; Villadangos Alonso, Jesús Upna; Santesteban, Daniel; Falcone Lanas, Francisco Javier Upna (MDPI, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The flexibility of new age wireless networks and the variety of sensors to measure a high number of variables, lead to new scenarios where anything can be monitored by small electronic devices, thereby implementing Wireless ...
  • Ubiquitous connected train based on train-to-ground and intra-wagon communications capable of providing on trip customized digital services for passengers 

    Salaberria, Itziar; Perallos Ruiz, Asier; Azpilicueta Fernández de las Heras, Leyre Upna; Falcone Lanas, Francisco Javier Upna; Carballedo, Roberto; Angulo Martínez, Ignacio; Elejoste Larrucea, Pilar; Bahillo, Alfonso; Astrain Escola, José Javier Upna; Villadangos Alonso, Jesús Upna (MDPI, 2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    During the last years, the application of different wireless technologies has been explored in order to enable Internet connectivity from vehicles. In addition, the widespread adoption of smartphones by citizens represents ...
  • An easy to deploy street light control system based on wireless communication and LED technology 

    Elejoste Larrucea, Pilar; Angulo Martínez, Ignacio; Perallos Ruiz, Asier; Chertudi Ozamiz, Aitor; García Zuazola, Ignacio Julio; Moreno, Asier; Azpilicueta Fernández de las Heras, Leyre Upna; Astrain Escola, José Javier Upna; Falcone Lanas, Francisco Javier Upna; Villadangos Alonso, Jesús Upna (MDPI, 2013)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper presents an intelligent streetlight management system based on LED lamps, designed to facilitate its deployment in existing facilities. The proposed approach, which is based on wireless communication technologies, ...
  • Detection of ethanol in human breath using optical fiber long period grating coated with metal-organic frameworks 

    Acha Morrás, Nerea de Upna; Hromadka, Jiri; Tokay, Begum; Correia, Ricardo; Elosúa Aguado, César Upna; Matías Maestro, Ignacio Upna; Arregui San Martín, Francisco Javier Upna; Morgan, Stephen P.; Korposh, Sergiy (MDPI, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    An optical fiber sensor for ethanol detection in exhaled breath has been developed. It has been fabricated by functionalizing a Long Period Grating with a metal-organic framework, ZIF-8. The sensor’s response was tested ...
  • Etched and nanocoated SMS fiber sensor for detection of salinity concentration 

    Cardona-Maya, Yamile; Del Villar, Ignacio Upna; Socorro Leránoz, Abián Bentor Upna; Corres Sanz, Jesús María Upna; Arregui San Martín, Francisco Javier Upna; Botero-Cadavid, Juan F. (MDPI, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    An optical fibre refractometer has been developed by etching and deposition of a thin film of indium tin oxide (ITO) on a single-mode-multimode-single-mode (SMS) fibre structure. The interference between modes in this ...
  • Title enhancement of the sensitivity of a volatile organic compounds MOF-sensor by means of its structure 

    López Torres, Diego Upna; López Aldaba, Aitor Upna; Elosúa Aguado, César Upna; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna; Arregui San Martín, Francisco Javier Upna (MDPI, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper, we experimentally compare several core structures of Microstructured Optical Fibers (MOFs) for low-finesse Fabry-Pérot (FP) sensors. These sensors are designed for Volatile Organic Compounds (VOCs) measurements. ...
  • Monitoring the etching process in LPFGs towards development of highly sensitive sensors 

    Del Villar, Ignacio Upna; Cruz, José Luis; Socorro Leránoz, Abián Bentor Upna; Díaz Lucas, Silvia Upna; Corres Sanz, Jesús María Upna; Arregui San Martín, Francisco Javier Upna; Matías Maestro, Ignacio Upna (MDPI, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, the monitoring of the etching process up to a diameter of 30 µm of two LPFG structures has been compared, one of them had initially 125 µm, whereas the second one had 80 µm. By tracking the wavelength shift ...
  • High-order PLL design with constant phase margin 

    Ugarte Gil, Mikel Upna; Carlosena García, Alfonso Upna (IEEE, 2010)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper we describe a novel procedure to design high-type high-order Phase Locked Loops (PLLs) from lower order prototypes, preserving a prescribed Phase Margin (PM). The method builds on a model recently proposed ...
  • Sculpting metals for anomalous transmission phenomena, complex waves and negative refractive metamaterials: underlying physics and applications 

    Navarro Cía, Miguel Upna (2011)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this talk, the potential of controlling the electromagnetic propagation by periodically-textured surfaces is reviewed. It is shown that backward-wave- and slow-wave-propagation, superluminal, effective negative ...
  • Mejora de antenas metalo-dieléctricas en la banda de frecuencias GSM-UMTS mediante elementos en transmisión extraordinaria 

    Illescas, Jesús; Estévez, Aritz; Falcone Lanas, Francisco Javier Upna; Marcotegui, José Antonio Upna (2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work a dual band GSM/UMTS antenna is proposed. The antenna is based on a stacked planar structure, where the combination of collimation by Enhanced Transmission and the use of parasitic director elements is ...
  • Implementacion de línea de ε negativa en tecnología stripline 

    Illescas, Jesús; Jarauta Ayensa, Eduardo Upna; Estévez, Aritz; Marcotegui, José Antonio Upna; Falcone Lanas, Francisco Javier Upna (2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, a negative-ε equivalent response medium is proponed in stripline technology. To achieve band rejection behaviour, Complementary Split Ring Resonators (CSRR) are placed in the central conductor strip of ...
  • Evalución de dosimetría de campos electromagnéticos en el entorno interior doméstico 

    Esparza Alfaro, Fermín Upna; Carranza, Noemí; Torres Landívar, Víctor Upna; Falcone Lanas, Francisco Javier Upna; Ramos González, Victoria (2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, the evaluation of radiofrequency exposure in a domestic environment is analyzed. 3D raytracing simulation results are compared with dossimetry measurement results in a probe household in a dense urban area ...
  • Análisis del comportamiento de esquemas de modulación adaptativos en LTE 

    Torres Landívar, Víctor Upna; Esparza Alfaro, Fermín Upna; Falcone Lanas, Francisco Javier Upna (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 ...
  • Sensing in coin discriminators 

    Carlosena García, Alfonso Upna; López Martín, Antonio Upna; Arizti, Fernando; Martínez de Guereñu, Ane; Pina Insausti, José L.; García Sayés, Miguel (IEEE, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper describes the technologies used in coin discriminator devices, stressing the improvements and novel mechanisms introduced by the authors in the past few years as a result of the cooperation with one leading ...

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