• Alimentadores gaussianos en guía de onda rectangular 

      Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del (1999)   Congreso / Biltzarra
      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-metallic ε-near-zero (ENZ) lens based on ultra-narrow hollow rectangular waveguides: experimental results 

      Orazbayev, Bakhtiyar; Torres Landívar, Víctor; Pacheco Peña, Víctor; Falcone Lanas, Francisco Javier; Teniente Vallinas, Jorge; Beruete Díaz, Miguel; Sorolla Ayza, Mario; Navarro Cía, Miguel; Engheta, Nader (IEEE, 2014)   Congreso / Biltzarra
      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 ...
    • Analysis and synthesis of vibrato in lyric singers 

      Arroabarren Alemán, Ixone; Carlosena García, Alfonso (2002)   Congreso / Biltzarra
      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 of bluetooth-based wireless sensor networks performance in hospital environments 

      López Iturri, Peio; Led Ramos, Santiago; Aguirre Gallego, Erik; Azpilicueta Fernández de las Heras, Leyre; Serrano Arriezu, Luis Javier; Falcone Lanas, Francisco Javier (MDPI, 2016)   Congreso / Biltzarra
      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 radio wave propagation for ISM 2.4GHz wireless sensor networks in inhomogeneous vegetation environments 

      Azpilicueta Fernández de las Heras, Leyre; López Iturri, Peio; Aguirre Gallego, Erik; Astrain Escola, José Javier; Villadangos Alonso, Jesús; Falcone Lanas, Francisco Javier (2014)   Congreso / Biltzarra
      The use of wireless networks has been extended in an exponential growing due to the improvement in terms of battery life and low consumption of the devices. However, it is highly important to conduct previous radio propagation ...
    • Analysis of surface-plasmon-like modes under an engineering perspective 

      Navarro Cía, Miguel; Beruete Díaz, Miguel; Sorolla Ayza, Mario (2011)   Congreso / Biltzarra
      In this communication we show how one can exploit equivalent circuits to analyze surface-plasmon-like modes (slit and hole arrays, Sievenpiper mushrooms and coaxial hole arrays) and to propose new designs with outstanding ...
    • Análisis de efecto de un superestrato left-handed en la apertura de una guía rectangular 

      Sáenz Sainz, Elena; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Maagt, Peter de (2005)   Congreso / Biltzarra
      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; Esparza Alfaro, Fermín; Falcone Lanas, Francisco Javier (2009)   Congreso / Biltzarra
      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 ...
    • Antena corrugada con perfil gaussiano de gran ancho de banda 

      Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del (2001)   Congreso / Biltzarra
      En este trabajo se presenta el diseño de una antena de bocina corrugada con más de un 40% de ancho de banda. Los patrones de radiación medidos coinciden muy bien con los simulados. Esta antena se puede usar en aplicaciones ...
    • Antenas de bocina optimizadas para acoplar modos gaussianos de orden superior 

      Río Bocio, Carlos del; Gonzalo García, Ramón; Sorolla Ayza, Mario; Thumm, Manfred (1995)   Congreso / Biltzarra
      The concept of higher order free space modes, gaussian-like beam modes can be applied to efficiently transport the power generated by a gyrotron for technological applications. Waveguide modes can be coupled properly to ...
    • ASTRA 3B horn antenna design 

      Teniente Vallinas, Jorge; Río Bocio, Carlos del (2010)   Congreso / Biltzarra
      The ASTRA 3B satellite includes 60 Ku-band state-of-the- art transponders and 4 Ka-band transponders. The spacecraft have been designed for the distribution of both direct-to-home (DTH) broadcast services and two way broadband ...
    • The beauty of anisotropy in extraordinary transmission fishnet metamaterials 

      Navarro Cía, Miguel; Beruete Díaz, Miguel; Sorolla Ayza, Mario (2011)   Congreso / Biltzarra
      In this work, we explore both numerically and experimentally, the possibility to obtain positive and negative refraction regimes that depend on the wave polarization, exploiting the strong anisotropy of extraordinary ...
    • Blind spot mitigation in phased array antenna using metamaterials 

      Crépin, Thomas; Martel, Cédric; Gabard, Benjamin; Boust, Fabrice; Martinaud, Jean-Paul; Dousset, Thierry; Rodríguez Ulibarri, Pablo; Beruete Díaz, Miguel; Loecker, Claudius; Bertuch, Thomas; Marcotegui Iturmendi, José Antonio; Maci, Stefano (IEEE, 2014)   Congreso / Biltzarra
      In this work, a metaradome based on a fakir’s bed of nails is designed and tested in order to suppress the blind directions of a 100-element antenna array. The antenna is a microstrip array designed to operate in X-band. ...
    • Boresight radiation of a dipole antenna with a uniform or non-uniform left handed superstrate 

      Sáenz Sainz, Elena; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Maagt, Peter de (2006)   Congreso / Biltzarra
      In this paper measurements of the radiation performances of a dipole fed by a coaxial balun and a dipole with a left handed superstrate based on a finite periodic repetition of a unit cell are compared. Two types ...
    • Brillouin distributed sensing assisted by Brillouin amplification of pump pulses 

      Urricelqui Polvorinos, Javier; Sagüés García, Mikel; Loayssa Lara, Alayn (IEEE, 2014)   Congreso / Biltzarra
      We demonstrate, for the first time to our knowledge, the extension of the measurement range of Brillouin distributed sensors (BDS) by using a distributed Brillouin amplifier (DBA) to compensate the attenuation of the ...
    • Brillouin optical time-domain analysis sensor with amplification of pump pulses and tolerant to non-local effects 

      Mompó Roselló, Juan José; Urricelqui Polvorinos, Javier; Loayssa Lara, Alayn (SPIE, 2016)   Congreso / Biltzarra
      We demonstrate a simple technique to provide conventional Brillouin optical time-domain analysis sensor with compensation for pump pulse attenuation and tolerance to non-local effects. The technique is based on operating ...
    • Brillouin optical time-domain analyzer for extended sensing range using probe dithering and cyclic coding 

      Iribas Pardo, Haritz; Loayssa Lara, Alayn; Sauser, Florian; Llera, Miguel; Le Floch, Sébastien (SPIE, 2017)   Congreso / Biltzarra
      We present an enhanced performance Brillouin optical time-domain analysis sensor that uses dual probes waves with optical frequency modulation and cyclic coding. The frequency modulation serves to increase the probe power ...
    • Brilloun optical time domain analysis sensor assisted by a Brillouin distributed amplifier 

      Urricelqui Polvorinos, Javier; Sagüés García, Mikel; Loayssa Lara, Alayn (SPIE, 2015)   Congreso / Biltzarra
      We demonstrate the extension of the measurement range of Brillouin optical time-domain analysis (BOTDA) sensors using a distributed Brillouin amplifier (DBA). The technique is based on injecting a DBA pump wave in the ...
    • Characterization of radio propagation channel in urban vehicle to infrastructure environments to support WSNs 

      Granda, Fausto; Azpilicueta Fernández de las Heras, Leyre; Vargas Rosales, César; López Iturri, Peio; Aguirre Gallego, Erik; Astrain Escola, José Javier; Villandangos Alonso, Jesús; Falcone Lanas, Francisco Javier (MDPI, 2016)   Congreso / Biltzarra
      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 ...
    • Choked-gaussian corrugated horn antenna design small global coverage horn antenna for TT&C with extremely low sidelobe level 

      Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del (2003)   Congreso / Biltzarra
      Extremely low sidelobe horn antennas are often required for the actual technology. This type of horn antennas are important to avoid interference with other systems. In this paper we describe a new design implementing a ...