• Quantum antenna arrays: the role of quantum interference on direction-dependent photon statistics 

      Liberal Olleta, Íñigo Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Ziolkowski, Richard W. (American Physical Society, 2018)   Artículo / Artikulua  OpenAccess
      We investigate the role of quantum interference phenomena on the characteristics of the fields radiated by an array of quantum emitters. In analogy to, but distinct from, classical outcomes, we demonstrate that the array ...
    • Quantum antireflection temporal coatings: quantum state frequency shifting and inhibited thermal noise amplification 

      Liberal Olleta, Íñigo Upna Orcid; Vázquez Lozano, Juan Enrique; Pacheco-Peña, Víctor Upna Orcid (wiley, 2023)   Artículo / Artikulua  OpenAccess
      The quantum optical response of antireflection temporal coatings (ATCs), that is, matching temporal layers that suppress the generation of backward waves in temporal boundaries, is investigated. The results reveal that ...
    • Quantum interference in Wilkinson power dividers 

      Hernández Martínez, Osmery; Ortega Gómez, Ángel; Bravo Acha, Mikel Upna Orcid; Liberal Olleta, Íñigo Upna Orcid (John Wiley & Sons, 2022)   Artículo / Artikulua  OpenAccess
      Scaling up quantum technologies entails the challenge of developing large-scale and high-performance photonic quantum networks. Engineering novel optical components, with a compact footprint and advanced functionalities, ...
    • Quasi-distributed vibration sensing based on weak reflectors and STFT demodulation 

      Leandro González, Daniel Upna Orcid; Zhu, Mengshi; López-Amo Sáinz, Manuel Upna Orcid; Murayama, Hideaki (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      In this work, a new system is proposed for quasi-distributed vibration sensing based on the Doppler effect. The setup employs an optical frequency domain reflectometer (OFDR) and an array of weak reflectors. The short-time ...
    • Quasi-distributed vibration sensing using OFDR and weak reflectors 

      Zhu, Mengshi; Leandro González, Daniel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; Murayama, Hideaki (Optical Society of America, 2019)   Artículo / Artikulua  OpenAccess
      The authors proposed a quasi-distributed vibration sensing technique using in-line weak reflectors and optical frequency domain reflectometry (OFDR). As a result, they achieved an 8 kHz measurable vibration frequency with ...
    • A radio channel model for D2D communications blocked by single trees in forest environments 

      Picallo Guembe, Imanol Upna Orcid; Klaina, Hicham Upna; López Iturri, Peio Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Celaya Echarri, Mikel Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Eguizábal Garrido, Alejandro; Falcone Lanas, Francisco Javier Upna Orcid; Alejos, Ana (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      In this paper we consider the D2D (Device-to-Device) communication taking place between Wireless Sensor Networks (WSN) elements operating in vegetation environments in order to achieve the radio channel characterization ...
    • Radio wave propagation and WSN deployment in complex utility tunnel environments 

      Celaya Echarri, Mikel Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; López Iturri, Peio Upna Orcid; Picallo Guembe, Imanol Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Astrain Escola, José Javier Upna Orcid; Villadangos Alonso, Jesús Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      The significant growth of wireless communications systems in the last years has led to the adoption of a wide range of applications not only for the general public but, also, including utilities and administrative authorities. ...
    • Ransomware early detection by the analysis of file sharing traffic 

      Morató Osés, Daniel Upna Orcid; Berrueta Irigoyen, Eduardo Upna Orcid; Magaña Lizarrondo, Eduardo Upna Orcid; Izal Azcárate, Mikel Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      Crypto ransomware is a type of malware that locks access to user files by encrypting them and demands a ransom in order to obtain the decryption key. This type of malware has become a serious threat for most enterprises. ...
    • Real time measuring system of multiple chemical parameters using microstructured optical fibers based sensors 

      López Aldaba, Aitor Upna; López Torres, Diego Upna Orcid; 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 (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      In this paper, a multiplexing system for simultaneous interrogation of optical fiber sensors which measure different parameters is presented and validated. The whole system has been tested with 6 different sensing heads ...
    • Reduced loss and prevention of substrate modes with a novel Coplanar Waveguide based on Gap Waveguide technology 

      Biurrun Quel, Carlos Upna Orcid; Teniente Vallinas, Jorge Upna Orcid; Río Bocio, Carlos del Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      The Gap Waveguide technology utilizes an Artificial Magnetic Conductor (AMC) to prevent the propagation of electromagnetic (EM) waves under certain conditions, resulting in various gap waveguide configurations. In this ...
    • El régimen de la responsabilidad civil por contaminación marina en la Ley de Navegación Marítima 

      Zurutuza Arigita, Iñaki Upna Orcid (Marcial Pons, 2019)   Capítulo de libro / Liburuen kapitulua
    • La rehabilitación de los contratos de financiación 

      Zurutuza Arigita, Iñaki Upna Orcid (Civitas, 2022)  
    • Relevance of sex, age and gait kinematics when predicting fall-risk and mortality in older adults 

      Porta Cuéllar, Sonia Upna Orcid; Martínez Ramírez, Alicia Upna Orcid; Millor Muruzábal, Nora Upna Orcid; Gómez Fernández, Marisol Upna Orcid; Izquierdo Redín, Mikel Upna Orcid (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      Approximately one-third of elderly people fall each year with severe consequences, including death. The aim of this study was to identify the most relevant features to be considered to maximize the accuracy of a logistic ...
    • Remote access protocols for Desktop-as-a-Service solutions 

      Magaña Lizarrondo, Eduardo Upna Orcid; Sesma Gracia, Iris Upna; Morató Osés, Daniel Upna Orcid; Izal Azcárate, Mikel Upna Orcid (Public Library of Science, 2019)   Artículo / Artikulua  OpenAccess
      The use of remote desktop services on virtualized machines is a general trend to reduce the cost of desktop seats. Instead of assigning a physical machine with its operating system and software to each user, it is considerably ...
    • Responsabilidad civil por el suministro de contenidos y servicios digitales 

      Luquin Bergareche, Raquel Upna Orcid (Tirant lo Blanch, 2023)   Capítulo de libro / Liburuen kapitulua
    • Revealing the underlying mechanisms behind TE extraordinary THz transmission 

      Freer, Suzanna; Camacho, Miguel; Kuznetsov, Sergei A.; Boix, Rafael R.; Beruete Díaz, Miguel Upna Orcid; Navarro Cía, Miguel Upna Orcid (Chinese Laser Press, 2020)   Artículo / Artikulua  OpenAccess
      Transmission through seemingly opaque surfaces, so-called extraordinary transmission, provides an exciting plat- form for strong light–matter interaction, spectroscopy, optical trapping, and color filtering. Much ofthe ...
    • A review of IoT sensing applications and challenges using RFID and wireless sensor networks 

      Landaluce, Hugo; Arjona, Laura; Perallos Ruiz, Asier; Falcone Lanas, Francisco Javier Upna Orcid; Angulo Martínez, Ignacio (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      Radio frequency identification (RFID) and wireless sensors networks (WSNs) are two fundamental pillars that enable the Internet of Things (IoT). RFID systems are able to identify and track devices, whilst WSNs cooperate ...
    • Review on unmanned aerial vehicle assisted sensor node localization in wireless networks: soft computing approaches 

      Annepu, Visalakshi; Sona, Deepika Rani; Ravikumar, Chinthaginjala V.; Bagadi, Kalapraveen; Alibakhshikenari, Mohammad; Althuwayb, Ayman Abdulhadi; Alali, Bader; Virdee, Bal S.; Pau, Giovanni; Dayoub, Iyad; See, Chan H.; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2022)   Artículo / Artikulua  OpenAccess
      Node positioning or localization is a critical requisite for numerous position-based applications of wireless sensor network (WSN). Localization using the unmanned aerial vehicle (UAV) is preferred over localization using ...
    • Ring cavity erbium-doped fiber for refractive index measurements 

      Pérez Herrera, Rosa Ana Upna Orcid; Soares, Liliana; Silva, Susana; Frazão, Orlando (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      In this study, an interrogation system based on an erbium-doped fiber ring cavity for refractive index measurements is presented and experimentally demonstrated. This cavity ring includes a 1 × 3 coupler wherein one of the ...
    • Robust active damping strategy for DFIG wind turbines 

      Rosado Galparsoro, Leyre Upna Orcid; Samanes Pascual, Javier Upna Orcid; Gubía Villabona, Eugenio Upna Orcid; López Taberna, Jesús Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      Doubly fed induction generators (DFIGs) with an LCL filter are widely used for wind power generation. In these energy conversion systems, there is an interaction between the grid-side converter (GSC) and the rotor-side ...

      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