• Subsampling OFDM-based ultrasonic data communication through metallic channels for monitoring of cargo containers 

      García Oya, José Ramón; Algueta-Miguel, Jose M. Upna Orcid; García Doblado, José; Muñoz Chavero, Fernando; Hidalgo Fort, Eduardo; Baena Lecuyer, Vicente; López Martín, Antonio Upna Orcid (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      An enhanced ultrasonic communication system based on piezoelectric transducers for monitoring of goods in cargo containers is presented. The proposed system consists of several sensors placed inside the container, whose ...
    • Substrate-integrated photonic doping for near-zero-index devices 

      Zhou, Ziheng; Li, Yue; Li, Hao; Sun, Wangyu; Liberal Olleta, Íñigo Upna Orcid; Engheta, Nader (Nature Research, 2019)   Artículo / Artikulua  OpenAccess
      Near-zero-index (NZI) media, a medium with near zero permittivity and/or permeability, exhibits unique wave phenomena and exciting potential for multiple applications. However, previous proof-of-concept realizations of NZI ...
    • Super class AB RFC OTA with adaptive local common-mode feedback 

      Garde Luque, María Pilar Upna Orcid; López Martín, Antonio Upna Orcid; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (Institution of Engineering and Technology, 2018)   Artículo / Artikulua  OpenAccess
      A super class AB recycling folded cascode operational transconductance amplifier is presented. It employs local common-mode feedback using two matched tuneable active resistors, allowing to adapt the amplifier to different ...
    • Super-gain-boosted AB-AB fully differential Miller op-amp with 156dB open-loop gain and 174MV/V MHZ pF/uW figure of merit in 130nm CMOS technology 

      Paul, Anindita; Ramírez-Angulo, Jaime; Díaz Sánchez, Alejandro; López Martín, Antonio Upna Orcid; González Carvajal, Ramón; Li, Frank X. (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      A fully differential Miller op-amp with a composite input stage using resistive local common-mode feedback and regulated cascode transistors is presented here. High gain pseudo-differential auxiliary amplifiers are used ...
    • Super-wide impedance bandwidth planar antenna for microwave and millimeter-wave applications 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna Orcid; Limiti, Ernesto (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      A feasibility study of a novel configuration for a super-wide impedance planar antenna is presented based on a 2 × 2 microstrip patch antenna (MPA) using CST Microwave Studio. The antenna comprises a symmetrical arrangement ...
    • Supercapacitors: electrical characteristics, modelling, applications and future trends 

      Berrueta Irigoyen, Alberto Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Eftekhari, Ali; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      Energy storage systems are playing an increasingly important role in a variety of applications, such as electric vehicles or grid-connected systems. In this context, supercapacitors (SCs) are gaining ground due to their ...
    • Suppressed-scattering spectral windows for radiative cooling applications 

      Pérez Escudero, José Manuel Upna Orcid; Torres García, Alicia E. Upna Orcid; Lezaun Capdevila, Carlos; Caggiano, Antonio; Peralta, Ignacio; Dolado, Jorge S.; Beruete Díaz, Miguel Upna Orcid; Liberal Olleta, Íñigo Upna Orcid (Optica, 2023)   Artículo / Artikulua  OpenAccess
      The scattering of light by resonant nanoparticles is a key process for enhancing the solar reflectance in daylight radiative cooling. Here, we investigate the impact of material dispersion on the scattering performance of ...
    • Surface exciton polariton resonances (SEPR)-based sensors 

      Vitoria Pascual, Ignacio Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Ozcariz Celaya, Aritz Upna Orcid; Imas González, José Javier Upna Orcid; Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Elsevier, 2023)   Artículo / Artikulua
      A new type of resonance in the development of sensors using long-range surface exciton polariton (LRSEP) phenomena has been coined: surface exciton plasmon resonance (SEPR). The resonance was obtained in the reflected ...
    • Surface wave reduction in antenna arrays using metasurface inclusion for MIMO and SAR systems 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna Orcid; Limiti, Ernesto (Advancing Earth and Space Science, 2019)   Artículo / Artikulua  OpenAccess
      An effective method is presented for suppressing mutual coupling between adjacent radiating elements which is based on metasurface isolation for multiple-input multiple-output (MIMO) and synthetic aperture radar (SAR) ...
    • A survey on detection techniques for cryptographic ransomware 

      Berrueta Irigoyen, Eduardo Upna Orcid; Morató Osés, Daniel Upna Orcid; Magaña Lizarrondo, Eduardo Upna Orcid; Izal Azcárate, Mikel Upna Orcid (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      Crypto-ransomware is a type of malware that encrypts user files, deletes the original data, and asks for a ransom to recover the hijacked documents. It is a cyber threat that targets both companies and residential users, ...
    • Synplex: in silico modeling of the tumor microenvironment from multiplex images 

      Jiménez Sánchez, Daniel; Ariz Galilea, Mikel Upna; Andrea, Carlos de; Ortiz de Solórzano, Carlos (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      Multiplex immunofluorescence is a novel, high-content imaging technique that allows simultaneous in situ labeling of multiple tissue antigens. This technique is of growing relevance in the study of the tumor microenvironment, ...
    • Synthesis of rectangular waveguide filters with smooth profile oriented to direct metal additive manufacturing 

      Percaz Ciriza, Jon Mikel Upna Orcid; Hussain, Jabir; Arregui Padilla, Iván Upna Orcid; Teberio Berdún, Fernando Upna Orcid; Benito Pertusa, David Upna Orcid; Martín Iglesias, Petronilo; Arnedo Gil, Israel; Gómez Laso, Miguel Ángel Upna Orcid; Lopetegui Beregaña, José María (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      In this paper, a novel design method for rectangular waveguide filters intended for fabrication using direct metal additive manufacturing is proposed. The synthesized filters will feature a smooth profile that allows us ...
    • Telecommunications on Earth and their possible relation with the anthropic principle 

      Del Villar, Ignacio Upna Orcid (Nicolaus Copernicus University, 2019)   Artículo / Artikulua  OpenAccess
      The society of the information is based on the ability of humans to communicate in real time. This is possible thanks to the emission of electromagnetic waves. In this work it is discussed, by analyzing the round trip time ...
    • Tenderness of PGI "Ternera de Navarra" beef samples determined by FTIR-MIR spectroscopy 

      Beriain Apesteguía, María José Upna Orcid; Lozano Saiz, María; Echeverría Morrás, Jesús Upna Orcid; Murillo Arbizu, María Teresa Upna Orcid; Insausti Barrenetxea, Kizkitza Upna Orcid; Beruete Díaz, Miguel Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      Understanding meat quality attribute changes during ageing by using non-destructive techniques is an emergent pursuit in the agroindustry research field. Using beef certified samples from the protected geographical indication ...
    • Thermoelectric generator with passive biphasic thermosyphon heat exchanger for waste heat recovery: design and experimentation 

      Araiz Vega, Miguel Upna Orcid; Casi Satrústegui, Álvaro Upna Orcid; Catalán Ros, Leyre Upna Orcid; Aranguren Garacochea, Patricia Upna Orcid; Astrain Ulibarrena, David Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      One of the measures to fight against the current energy situation and reduce the energy consumption at an industrial process is to recover waste heat and transform it into electric power. Thermoelectric generators can be ...
    • THz sensing with anomalous extraordinary optical transmission hole arrays 

      Jáuregui López, Irati Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Kuznetsov, Sergei A.; Nikolaev, Nazar A.; Beruete Díaz, Miguel Upna Orcid (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      Subwavelength hole array (HA) metasurfaces support the so-called extraordinary optical transmission (EOT) resonance that has already been exploited for sensing. In this work, we demonstrate the superior performance of a ...
    • Time-restricted eating and supervised exercise for improving hepatic steatosis and cardiometabolic health in adults with obesity: protocol for the TEMPUS randomised controlled trial 

      Camacho-Cardenosa, Alba; Clavero-Jimeno, Antonio; Martín-Olmedo, Juan J.; Amaro Gahete, Francisco J.; Cupeiro, Rocío; González Cejudo, María Trinidad; García Pérez, Patricia Virginia; Hernández-Martínez, Carlos; Sevilla-Lorente, Raquel; O, Alejandro de la; López-Vázquez, Alejandro; Molina-Fernández, Marcos; Carneiro-Barrera, Almudena; García, Federico; Rodríguez-Nogales, Alba; Gálvez Peralta, Julio Juan; Cabeza Laguna, Rafael Upna Orcid; Martín-Rodríguez, José L.; Muñoz-Garach, Araceli; Muñoz Torres, Manuel; Labayen Goñi, Idoia Upna Orcid; Ruiz, Jonatan R. (BMJ Publishing Group, 2024)   Artículo / Artikulua  OpenAccess
      Introduction. Metabolic dysfunction-associated steatotic liver disease is a major public health problem considering its high prevalence and its strong association with extrahepatic diseases. Implementing strategies based ...
    • El todo por la parte: la polémica en torno a los nombres de las víctimas en el memorial del cementerio de La Almudena 

      García Funes, Juan Carlos Upna Orcid (Antonio Machado libros, 2020)   Capítulo de libro / Liburuen kapitulua
    • Towards environmental RF-EMF assessment of mmwave high-node density complex heterogeneous environments 

      Celaya Echarri, Mikel Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Rodríguez Corbo, Fidel Alejandro; López Iturri, Peio Upna Orcid; Ramos González, Victoria; Alibakhshikenari, Mohammad; Shubair, Raed M.; Falcone Lanas, Francisco Javier Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      The densification of multiple wireless communication systems that coexist nowadays, as well as the 5G new generation cellular systems advent towards the millimeter wave (mmWave) frequency range, give rise to complex ...
    • Towards sub-meter level UWB indoor localization using body wearable sensors 

      Otim, Timothy Upna; Bahillo, Alfonso; Enrique Díez, Luis; López Iturri, Peio Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      Thanks to its ability to provide sub-meter level positioning accuracy, Ultrawideband (UWB) has found wide use in several wireless body area network (WBAN) applications such as ambient assisted living, remote patient ...

      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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