Now showing items 154-160 of 160

    • 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 ...
    • Ultra-wide band corrugated gaussian profiled horn antenna design 

      Teniente Vallinas, Jorge Upna; Gonzalo García, Ramón Upna; Río Bocio, Carlos del Upna (IEEE, 2001)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A corrugated horn antenna design with more than 40% bandwidth is proposed in this paper. The measured radiated field patterns have a good agreement with the simulated ones. This antenna can be used in applications that ...
    • Unified analysis of glottal source spectrum 

      Arroabarren Alemán, Ixone Upna; Zivanovic, Miroslav Upna; Carlosena García, Alfonso Upna (ISCA, 2003)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The spectral study of the glottal excitation has traditionally been based on a single time-domain mathematical model of the signal, and the spectral dependence on its time domain parameters. Opposite to this approach, ...
    • Using CORPS-BFN to feed multibeam antenna systems 

      Betancourt Quiñones, Diego Upna; Río Bocio, Carlos del Upna (2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, a simple example of application of the CORPS-BFN concept has been presented. A multibeam antenna system is seen as a small part of the human eye, and therefore, improving the similarity of the whole system ...
    • Utilizando CORPS-BFN para alimentar sistemas de antenas de múltiples haces 

      Betancourt Quiñones, Diego Upna; Río Bocio, Carlos del Upna (2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper present an application of the Coherently Radiating Periodic Structures - CORPS on the design of a Beam Forming Network -BFN. The Named CORPS-BFN is a novel feeding network with special behaviour characteristics ...
    • Very short and efficient feeder design from monomode waveguide 

      Gonzalo García, Ramón Upna; Teniente Vallinas, Jorge Upna; Río Bocio, Carlos del Upna (IEEE, 1997)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, we present an original and short corrugated horn antenna profile to obtain the HE11 corrugated circular waveguide mode exciting with a pure TE11 monomode smooth circular waveguide mode. We will obtain ...
    • Zuntz optikoan oinarritutako sentsoreen prestazioen muga-efektu berria, egituren egoera monitorizatzea helburu 

      Iribas Pardo, Haritz; Mariñelarena Ollacarizqueta, Jon Upna; Loayssa Lara, Alayn Upna (Udako Euskal Unibertsitatea, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Brillouin denbora-eremu optikoaren analisian (BOTDA) oinarritutako sentsoreak estruktura handien (120 km luzerako estrukturak) deformazioa eta tenperatura neurtzeko gaitasuna dute, metro bateko bereizmen espazialarekin. ...