Listar Artículos de revista DIEE - IEES Aldizkari artikuluak por título

Mostrando ítems 244-263 de 391

    • On the performance of the zoned fishnet metamaterial lens with positive and negative reference phase 

      Pacheco-Peña, Víctor Upna Orcid; Minin, Igor V.; Minin, Oleg V.; Beruete Díaz, Miguel Upna Orcid (IEEE, 2016)   Artículo / Artikulua  OpenAccess
      In this letter, several converging fishnet metalenses are designed using both the zoning and reference phase techniques. They are engineered with a focal length of 1.5λ0 at the design frequency of 55 GHz (λ0 = 5.45 mm) at ...

    • On the testing, characterization, and evaluation of PV inverters and dynamic MPPT performance under real varying operating conditions 

      Sanchis Gúrpide, Pablo Upna Orcid; López Taberna, Jesús Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Gubía Villabona, Eugenio Upna Orcid; Marroyo Palomo, Luis Upna Orcid (Wiley, 2007)   Artículo / Artikulua  OpenAccess
      The increasing number of photovoltaic inverters that are coming on to the PV marketstresses the need to carry out a dynamic characterization of these elements and theirmaximum power point tracking (MPPT) algorithms under ...

    • One-way quasiplanar terahertz absorbers using nonstructured polar dielectric layers 

      Rodríguez Ulibarri, Pablo Upna Orcid; Serebryannikov, Andriy E.; Beruete Díaz, Miguel Upna Orcid (American Physical Society, 2017)   Artículo / Artikulua  OpenAccess
      A concept of quasiplanar one-way transparent terahertz absorbers made of linear isotropic materials is presented. The resulting structure consists of a homogeneous absorbing layer of polar dielectric, GaAs, a dispersion-free ...

    • Optical fiber bus protection network to multiplex sensors: experimental validation of self-diagnosis 

      Pérez Herrera, Rosa Ana Upna Orcid; Urquhart, Paul; Schlüter, Marcel; Díaz Lucas, Silvia Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (IEEE, 2012)   Artículo / Artikulua  OpenAccess
      The experimental demonstration of a resilient wavelength division multiplexed (WDM) fiber bus network to interconnect sensors is reported. The network recovers operation after failures and it performs 'self-diagnosis', the ...

    • Optical fiber networks for remote fiber optic sensors 

      Fernández Vallejo, Montserrat Upna; López-Amo Sáinz, Manuel Upna Orcid (MDPI, 2012)   Artículo / Artikulua  OpenAccess
      This paper presents an overview of optical fiber sensor networks for remote sensing. Firstly, the state of the art of remote fiber sensor systems has been considered. We have summarized the great evolution of these systems ...

    • Optical fiber resonance-based pH sensors using gold nanoparticles into polymeric layer-by-layer coatings 

      Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Socorro Leránoz, Abián Bentor Upna Orcid; Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid (Springer-Verlag, 2016)   Artículo / Artikulua

    • Optical fiber sensors based on nanoparticle-embedded coatings 

      Urrutia Azcona, Aitor Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (Hindawi Publishing Corporation, 2015)   Artículo / Artikulua  OpenAccess
      The use of nanoparticles (NPs) in scientific applications has attracted the attention of many researchers in the last few years. The use of NPs can help researchers to tune the physical characteristics of the sensing coating ...

    • Optical fibre sensors using graphene-based materials: a review 

      Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Melendi Espina, Sonia; Bird, Liam; Mayes, Andrew; Arregui San Martín, Francisco Javier Upna Orcid (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      Graphene and its derivatives have become the most explored materials since Novoselov and Geim (Nobel Prize winners for Physics in 2010) achieved its isolation in 2004. The exceptional properties of graphene have attracted ...

    • Optical sensors based on lossy-mode resonances 

      Matías Maestro, Ignacio Upna Orcid; Ascorbe Muruzabal, Joaquín Upna Orcid; Acha Morrás, Nerea de Upna Orcid; López Torres, Diego Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; Sánchez Zábal, Pedro Upna Orcid; Urrutia Azcona, Aitor Upna Orcid; Socorro Leránoz, Abián Bentor Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Elosúa Aguado, César Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Bariáin Aisa, Cándido Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Del Villar, Ignacio Upna Orcid (Elsevier Science, 2017)   Artículo / Artikulua

    • Optimization and design of wireless systems for the implementation of context aware scenarios in railway passenger vehicles 

      Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Astrain Escola, José Javier Upna Orcid; López Iturri, Peio Upna Orcid; Granda, Fausto; Vargas Rosales, César; Villadangos Alonso, Jesús Upna Orcid; Perallos Ruiz, Asier; Bahillo, Alfonso; Falcone Lanas, Francisco Upna Orcid (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      In this paper, intra-wagon wireless communication performance is analyzed, in order to account for inherent scenario complexity in the deployment phase of wireless systems toward the implementation of a context-aware ...

    • Optimization in nanocoated D-shaped optical fiber sensors 

      Del Villar, Ignacio Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Optical Society of America, 2017)   Artículo / Artikulua  OpenAccess
      Nanocoated D-shaped optical fibers have been proven as effective sensors. Here, we show that the full width at half minimum (FWHM) of lossy mode resonance can be reduced by optimizing the nanocoating width, thickness and ...

    • Optimization of a pin surface as a solution to suppress cavity modes in a packaged W-band microstrip receiver 

      Rebollo Mugueta, Ainara Upna; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid (IEEE, 2014)   Artículo / Artikulua  OpenAccess
      A pin surface structure has been used in the upper metal plate of a packaged W-band RF front-end receiver in order to suppress the propagation of unwanted modes. A full parametric analysis of the periodic structure within ...

    • Optimization of sensitivity in long period fiber gratings with overlay deposition 

      Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Lalanne, Philippe (Optical Society of America, 2005)   Artículo / Artikulua  OpenAccess
      The deposition of an overlay of higher refractive index than the cladding in a Long Period Fiber Grating (LPFG) permits to improve the sensitivity to ambient refractive index changes in a great manner. When the overlay is ...

    • Optimization of sensors based on multimode interference in single-mode–multimode– single-mode structure 

      Del Villar, Ignacio Upna Orcid; Socorro Leránoz, Abián Bentor Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2013)   Artículo / Artikulua  OpenAccess
      By coating a single-mode–multimode–single-mode (SMS) structure with a complex refractive index thin-film the central wavelength of the transmission and attenuation bands of the optical spectrum can be shifted. By adequate ...

    • Optimization of the available spectrum of a WDM sensors network using a mode locked laser 

      Fernández Vallejo, Montserrat Upna; Ardanaz, Diego; López-Amo Sáinz, Manuel Upna Orcid (IEEE / OSA, 2015)   Artículo / Artikulua  OpenAccess
      This work experimentally proposes a new interrogation method which consists on the combination of the information given by both domains: time and frequency. On the one hand, the sensor information is obtained in the frequency ...

    • An optimized method based on digitalized Lissajous curve to determine lifetime of luminescent materials on optical fiber sensors 

      Ridruejo Muro, Adrián; Acha Morrás, Nerea de Upna Orcid; Elosúa Aguado, César Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (Hindawi, 2016)   Artículo / Artikulua  OpenAccess
      A method is proposed to determine lifetime of luminescent emissions based on the phase shift measurement employing the digitalized Lissajous representation: this diagram has been typically used with analogical algorithms, ...

    • Optimized strain long-period fiber grating (LPFG) sensors operating at the dispersion turning point 

      Del Villar, Ignacio Upna Orcid; Fuentes Lorenzo, Omar Upna; Chiavaioli, Francesco; Corres Sanz, Jesús María Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      Two phenomena for enhancing the sensitivity of longperiod fiber gratings are combined toward an increase of the sensitivity to strain of this type of devices: the dispersion turning point (DTP) and the cladding diameter ...

    • Optimized wireless channel characterization in large complex environments by hybrid ray launching-collaborative filtering approach 

      Casino, Fran; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; López Iturri, Peio Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Falcone Lanas, Francisco Upna Orcid; Solanas, Agustí (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      Simulation techniques based on deterministic methods such as Ray Tracing and Ray Launching, are widely used to perform radioplanning tasks. However, the quality of the simulations depends on the number of rays and the ...

    • Optimizing interoperability between video-oculographic and electromyographic systems 

      Navallas Irujo, Javier Upna Orcid; Ariz Galilea, Mikel Upna; Villanueva Larre, Arantxa Upna Orcid; San Agustín, Javier; Cabeza Laguna, Rafael Upna Orcid (Rehabilitation Research & Development Service, 2011)   Artículo / Artikulua  OpenAccess
      A new system is presented that enhances the interoperability between a video-oculographic (VOG) system for mouse movement control and an electromyographic (EMG) system for mouse click detection. The proposed VOG-EMG system ...

    • Optomagnonics in dispersive media: magnon-photon coupling enhancement at the epsilon-near-zero frequency 

      Bittencourt, V.A.S.V.; Liberal Olleta, Íñigo Upna Orcid; Viola Kusminskiy, Silvia (American Physical Society, 2022)   Artículo / Artikulua  OpenAccess
      Reaching strong light-matter coupling in solid-state systems has long been pursued for the implementation of scalable quantum devices. Here, we put forward a system based on a magnetized epsilon-near-zero (ENZ) medium, and ...
      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

      Contacto | Sugerencias