Listar Comunicaciones y ponencias de congresos DIEE - IEES Biltzarretako komunikazioak eta txostenak por título

Mostrando ítems 62-81 de 191

    • Domain integral equations for electromagnetic band-gap slab simulations 

      Hon, B.P. de; Beurden, M.C. van; Gonzalo García, Ramón Upna Orcid; Martínez Pascual, Beatriz Upna; Ederra Urzainqui, Íñigo Upna Orcid; Río Bocio, Carlos del Upna Orcid; Azcona, L.; Alderman, B.; Huggard, P.G.; Maagt, Peter de; Marchand, L. (2004)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Electromagnetic band-gap substrates o er advantages regarding cross-coupling in sub-mm range imaging array applications. Electromagnetic scattering by such substrates may e ectively be formulated in terms of integro- di ...

    • Dynamic BOTDA measurements using Brillouin phase-shift 

      Urricelqui Polvorinos, Javier Upna Orcid; Zornoza Indart, Ander; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (SPIE, 2012)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate a novel dynamic BOTDA sensor based, for the first time to our knowledge, on the use of the Brillouin phase-shift instead of the conventional Brillouin gain. This provides the advantage of measurements that ...

    • 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 Orcid; Astrain Escola, José Javier Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid; Villadangos Alonso, Jesús Upna Orcid (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, ...

    • EBG superstrate antenna for WAAS bands 

      Osés de León, Ángel Upna; Iriarte Galarregui, Juan Carlos Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Gonzalo García, Ramón Upna Orcid (2008)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Multiband antennas can simplify considerably the complexity of receivers and transmitters, reducing the size and the mass of the conventional configurations. On the other hand, applications with high directivity requirements ...

    • Efficient implementation of GALS systems over comercial synchronous FPGAs: a new approach 

      García Lasheras, Javier Upna (2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper introduces a new approach for implementing Glocally Asynchronous – Locally Synchronous (GALS) systems over commercial available Field Programmable Gate Arrays (FPGA). This new vision is aimed to overcome the ...

    • Egituren egoeraren monitorizaziorako zuntz optikoan oinarritutako sentsore sinplifikatua 

      Iribas Pardo, Haritz Upna Orcid; Sagüés García, Mikel Upna Orcid; Mariñelarena Ollacarizqueta, Jon Upna Orcid; Loayssa Lara, Alayn Upna Orcid (Udako Euskal Unibertsitatea, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Brillouin hedatuko denbora eremu optikoaren analisian (BOTDA) oinarritutako sentsoreak, estruktura handien (100 km luzerako estrukturak) deformazioa eta tenperatura neurtzeko gaitasuna dute. Lan honetan, BOTDA konfigurazio ...

    • Enhanced radiation properties of a rectangular waveguide by means of a left handed media 

      Sáenz Sáinz, Elena Upna; Ederra Urzainqui, Íñigo Upna Orcid; Gonzalo García, Ramón Upna Orcid; Maagt, Peter de (2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, the results of experimental investigations to improve the gain between two antennas by means of a Left Handed Material (LHM) are presented. The basic idea is the use of a LHM media acting as a resonator ...

    • Enhanced tolerance to pulse extinction ratio in Brillouin optical time domain analysis sensors by dithering of the optical source 

      Iribas Pardo, Haritz Upna Orcid; Urricelqui Polvorinos, Javier Upna Orcid; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (SPIE, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate the relaxation of the stringent requirements placed on the pulse extinction ratio in long-range Brillouin optical time-domain analysis sensors (BOTDA) by modulating the wavelength of the laser source that ...

    • Enhancement of signal-to-noise ratio in Brillouin optical time domain analyzers by dual-probe detection 

      Iribas Pardo, Haritz Upna Orcid; Loayssa Lara, Alayn Upna Orcid; Sauser, Florian; Llera, Miguel; Le Floch, Sébastien (SPIE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate a simple technique to enhance the signal-to-noise ratio (SNR) in Brillouin optical time-domain analysis sensors by the addition of gain and loss processes. The technique is based on the shift of the pump ...

    • Enhancement of the power radiated by a dipole antenna at boresight by means of a left handed superstrate 

      Sáenz Sáinz, Elena Upna; Ederra Urzainqui, Íñigo Upna Orcid; Gonzalo García, Ramón Upna Orcid; Maagt, Peter de (IEEE, 2006)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper a comparison between the measured radiation performances of a single dipole and a dipole with a left handed superstrate based on a finite periodic repetition of a unit cell is presented. First of all the ...

    • 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 ...

    • Estado del arte de las antenas que combinan corrugaciones horizontales y verticales 

      Teniente Vallinas, Jorge Upna Orcid; Gonzalo García, Ramón Upna Orcid; Río Bocio, Carlos del Upna Orcid (2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In the present paper the state of the art, possibilities, advantages and disadvantages of the patented corrugated horn antennas that combine horizontal and vertical corrugations is being covered. These rather new type and ...

    • Estudio de la posibilidad de utilizar modos de orden superior en guías de onda cuasi-ópticas 

      Río Bocio, Carlos del Upna Orcid; Gonzalo García, Ramón Upna Orcid; Marín Pilz, Miguel Upna; Sorolla Ayza, Mario Upna; Möbius, Arnold; Thumm, Manfred (1995)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The possibility to employ low power gyrotron tubes (10-30 kW, CW) at millimeter wave frequencies (30-100 GHz) has potential applications in advanced ceramic sintering, surface coating, radar, remote sensing, etc.. In ...

    • Estudio de resonancias parásitas en antenas corrugadas 

      Teniente Vallinas, Jorge Upna Orcid; Gonzalo García, Ramón Upna Orcid; Río Bocio, Carlos del Upna Orcid (2001)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A theoretical study reinforced with practical measurements about the origin of the return loss spikes in corrugated horn antennas is presented in this paper. These spikes are directly related to the periodic structure ...

    • Etched and nanocoated SMS fiber sensor for detection of salinity concentration 

      Cardona-Maya, Yamile; Del Villar, Ignacio Upna Orcid; Socorro Leránoz, Abián Bentor Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; 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 ...

    • 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 Orcid; 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 ...

    • Experimental study of the antenna influence in RTLS based-on RFID 

      Crespo López, Gonzalo Upna; Teniente Vallinas, Jorge Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Gonzalo García, Ramón Upna Orcid (IEEE, 2012)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Nowadays Real-time localization systems (RTLS) are growing up very quickly but there are some remaining issues which need to be analyzed. This paper presents an experimental study that shows how different kind of antennas can ...

    • Fiber-optic immunosensor based on lossy mode resonances induced by indium tin oxide thin-films 

      Socorro Leránoz, Abián Bentor Upna Orcid; Del Villar, Ignacio Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A novel immunosensor based on lossy mode resonances (LMRs) induced in optical fibers is developed in this contribution. Indium tin oxide (ITO) is sputtered on the optical substrate to generate an LMR in the transmission ...

    • Fiber-optic lossy mode resonance sensors 

      Arregui San Martín, Francisco Javier Upna Orcid; Del Villar, Ignacio Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Elosúa Aguado, César Upna Orcid; Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Socorro Leránoz, Abián Bentor Upna Orcid; Urrutia Azcona, Aitor Upna Orcid; Sánchez Zábal, Pedro Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; López Torres, Diego Upna Orcid; Acha Morrás, Nerea de Upna Orcid; Matías Maestro, Ignacio Upna Orcid (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 ...

    • Gain dependence of measured spectra in coherent Brillouin optical time-domain analysis sensors 

      Mariñelarena Ollacarizqueta, Jon Upna Orcid; Urricelqui Polvorinos, Javier Upna Orcid; Loayssa Lara, Alayn Upna Orcid (SPIE, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We report on the effects of large pump pulse powers on Brillouin optical time-domain analysis (BOTDA) sensors based on phase-modulated probe wave and coherent detection. It is found that the large Brillouin gain that comes ...
      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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