Listar Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila por título

Mostrando ítems 79-98 de 648

    • Compact ultra wide band microstrip bandpass filter based on multiple-mode resonator and modified complementary split ring resonator 

      Marcotegui, José Antonio Upna; Illescas, Jesús; Estévez González, Aritz; Falcone Lanas, Francisco Javier Upna Orcid (Hindawi, 2013)   Artículo / Artikulua  OpenAccess
      A new class of broadband microstrip filters for Ultra Wide Band (UWB) applications is proposed. In the design, different stages of parallel-coupled microstrip line and other stages with a Modified Complementary Split Ring ...

    • Comparación entre antenas cónicas corrugadas y antenas gaussianas corrugadas 

      Teniente Vallinas, Jorge Upna Orcid; Gonzalo García, Ramón Upna Orcid; Río Bocio, Carlos del Upna Orcid (2002)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, a study of two equal size corrugated horn antennas; a conical and a gaussian profiled horn antenna (GPHA) has been developed. It will be demonstrated that GPHA´s provide lower sidelobes and wider bandwidths, ...

    • A comparative study between SMS interferometers and lossy mode resonace optical fiber devices for sensing applications 

      Socorro Leránoz, Abián Bentor Upna Orcid; Hernáez Sáenz de Zaitigui, Miguel 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 (SPIE, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Optical fiber sensors are of great interest due to their intrinsic advantages over electronic sensors. In this work, the sensing characteristics of two different and novel optical fiber devices are compared, after ...

    • A comparative study in the sensitivity of optical fiber refractometers based on the incorporation of gold nanoparticles into layer-by-layer films 

      Rivero Fuente, Pedro J. Upna Orcid; Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (Exeley, 2015)   Artículo / Artikulua  OpenAccess
      In this work, optical fiber refractometers based on the successive incorporation of gold nanoparticles have been fabricated by means of the Layer-by-Layer Embedding (LbL-E) deposition technique. This enables the apparition ...

    • A comparative study of degradation and performance of thin film photovoltaic generators versus a multi-crystalline generator 

      Parra Laita, Íñigo de la Upna Orcid; García Solano, Miguel Upna Orcid; Marcos Álvarez, Javier Upna Orcid; Marroyo Palomo, Luis Upna Orcid (2013)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Thin film solar cells (TFSC) are supposed to have higher energy yield rates than crystalline silicon (Si-x) mainly possible by some enhancements like lower temperature coefficient and higher absorption of diffuse light. ...

    • Comparative study of layer-by-layer deposition techniques for poly(sodium phosphate) and poly (allylamine hydrochloride) 

      Elosúa Aguado, César Upna Orcid; López Torres, Diego Upna Orcid; Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (Springer, 2013)   Artículo / Artikulua  OpenAccess
      An inorganic short chain polymer, poly(sodium phosphate), PSP, together with poly(allylamine hydrochloride), PAH, is used to fabricate layer-by-layer (LbL) films. The thickness, roughness, contact angle, and optical ...

    • 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 Orcid; 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 ...

    • Comparative study of ring and random cavities for fiber lasers 

      Fernández Vallejo, Montserrat Upna; Rota Rodrigo, Sergio Upna; López-Amo Sáinz, Manuel Upna Orcid (Optical Society of America, 2014)   Artículo / Artikulua  OpenAccess
      An experimental comparison of three fiber laser structures with the same Raman gain medium is presented in order to establish the main pros and cons of each basic scheme. The first fiber laser is based on a hybrid ring–random ...

    • A comparative study of two different approaches for the incorporation of silver nanoparticles into layer-by-layer films 

      Rivero Fuente, Pedro J. Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (Springer, 2014)   Artículo / Artikulua  OpenAccess
      In this work, a comparative study about the incorporation of silver nanoparticles (AgNPs) into thin films is presented using two alternative methods, the in situ synthesis process and the layer-by-layer embedding deposition ...

    • Comparison between capacitive and microstructured optical fiber soil moisture sensors 

      López Aldaba, Aitor Upna; López Torres, Diego Upna Orcid; Campo-Bescós, Miguel Upna Orcid; López Rodríguez, José Javier Upna Orcid; Yerro Lizarazu, David; Elosúa Aguado, César Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna Orcid (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      Soil moisture content has always been an important parameter to control because it is a deterministic factor for site-specific irrigation, seeding, transplanting, and compaction detection. In this work, a discrete sensor ...

    • Comparison of linear and and small-signal models for inverter-based microgrids 

      Urtasun Erburu, Andoni Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Frequency and voltage regulation in droop-based microgrids is generally modeled using small-signal analysis. In order to ensure accuracy, existing models do not decouple real and reactive power responses. However, the ...

    • Comparison of State-of-Charge estimation methods for stationary Lithium-ion batteries 

      Berrueta Irigoyen, Alberto Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      An accurate monitoring of the State of Charge (SoC) is mandatory for an efficient management of a Lithium-ion battery. Batteries of stationary systems barely have long resting periods when the cumulative errors can be ...

    • Comparison of wavelength-division-multiplexed distributed fiber Raman amplifier networks for sensors 

      Díaz Lucas, Silvia Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (Optical Society of America, 2006)   Artículo / Artikulua  OpenAccess
      A novel distributed fiber Raman amplified star topology used for optical sensor wavelength-division multiplexing is proposed. The performance of this star configuration is compared to an optically amplified bus topology. ...

    • Compensation of forecast error in large PV plants with battery storage: associated strategies 

      Marcos Álvarez, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Muñoz Escribano, Mikel Upna; García Solano, Miguel Upna Orcid; Marroyo Palomo, Luis Upna Orcid (2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      As penetration rates of utility-scale photovoltaics (PV) increases, large PV plants will participate in the daily wholesale electricity market in the same way that wind farms. Then, PV plant owner can receive some kind of ...

    • A complete optimization-loop, including feeders, of antenna systems based on reflectors 

      Delgado, D.; Teniente Vallinas, Jorge Upna Orcid; Río Bocio, Carlos del Upna Orcid; Haro, L. de; Martínez, J. A.; Pino, A.G (IEEE, 2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In the design process of a complete antenna system based on reflectors, the feed real performance is usually included once the reflectors have been optimized with an ideal feed. In this paper, the proposal is to include ...

    • Comportamiento de propagacion electromagnetica en el apilamiento de agujeros sublambda y agujeros propagantes 

      Navarro Cía, Miguel Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid; Campillo, Igor; Sorolla Ayza, Mario Upna (2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, we provide more insight on the physics underlying the transmission through subwavelength hole arrays metaprism by comparing it with propagating hole arrays prism. We show the critical role that the size ...

    • Compound lasing fiber optic ring resonators for sensor sensitivity enhancement 

      Rota Rodrigo, Sergio Upna; González Herráez, Miguel; López-Amo Sáinz, Manuel Upna Orcid (IEEE / OSA, 2015)   Artículo / Artikulua  OpenAccess
      In this work, a new method for increasing simultaneously the sensitivity and interrogation stability of fiberoptic intensity sensors is presented. The configuration is based on a double-coupler ring resonator. On one side, ...

    • A comprehensive analysis of the absorption spectrum of conducting ferromagnetic wires 

      Liberal Olleta, Íñigo Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Gómez Polo, Cristina Upna Orcid; Labrador Otamendi, Alberto; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Gonzalo García, Ramón Upna Orcid (IEEE, 2012)   Artículo / Artikulua  OpenAccess
      A detailed analysis of the absorption spectrum of conductive ferromagnetic wires is presented. The absorption spectrum is computed from the solution to the scattering problem, and circuit models are formulated to clarify ...

    • A comprehensive model for lithium-ion batteries: from the physical principles to an electrical model 

      Berrueta Irigoyen, Alberto Upna Orcid; Urtasun Erburu, Andoni Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      The growing interest in e-mobility and the increasing installation of renewable energy-based systems are leading to rapid improvements in lithium-ion batteries. In this context, battery manufacturers and engineers require ...

    • Computation of greatest common divisor for the blind deconvolution of transient impulsive signals 

      Lecumberri Villamediana, Pablo Upna; Gómez Fernández, Marisol Upna Orcid; Carlosena García, Alfonso Upna Orcid (Universitat Politècnica de Catalunya, 2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We propose a new blind deconvolution method for transient impulsive signals in a single input – multiple output (SIMO) system. The method exploits the data redundancy inherent to SIMO multichannel systems to obtain an ...
      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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