• Basketball player on-body biophysical and environmental parameter monitoring based on wireless sensor network integration 

      Picallo Guembe, Imanol Upna Orcid; López Iturri, Peio Upna Orcid; Astrain Escola, José Javier Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Celaya Echarri, Mikel Upna Orcid; Villadangos Alonso, Jesús Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      Sport activities have benefited in recent years from the progressive adoption of different technological assets in order to improve individual as well as group training, collect different statistics or enhance the spectator ...
    • Beyond near-infrared lossy mode resonances with fluoride glass optical fiber 

      Vitoria Pascual, Ignacio Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Ozcariz Celaya, Aritz Upna Orcid; Imas González, José Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Optica, 2021)   Artículo / Artikulua  OpenAccess
      The objective of this Letter consists of the exploration of the lossy mode resonance (LMR) phenomenon beyond the nearinfrared region and specifically in the short wave infrared region (SWIR) and medium wave infrared region ...
    • Bloch waves at the surface of a single-layer coating D-shaped photonic crystal fiber 

      González Valencia, Esteban; Del Villar, Ignacio Upna Orcid; Torres, Pedro (Optical Society of America, 2020)   Artículo / Artikulua  OpenAccess
      Bloch surface wave (BSW) platforms are particularly interesting for light confinement and surface sensitivity, as an alternative to the metal-based surface plasmon polaritons (SPP). However, most of the reported BSW platforms ...
    • Broadband 3-D shared aperture high isolation nine-element antenna array for on-demand millimeter-wave 5G applications 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; Vadalà, Valeria; Dalarsson, Mariana; Cos Gómez, María Elena de; Alharbi, Abdullah G.; Burokur, Shah Nawaz; Aïssa, Sonia; Dayoub, Iyad; Falcone Lanas, Francisco Javier Upna Orcid; Limiti, Ernesto (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      The paper presents the results of a novel 3-D shared aperture 3 × 3 matrix antenna-array for 26 GHz band 5 G wireless networks. Radiation elements constituting the array are hexagonal-shaped patches that are elevated ...
    • Building decentralized fog computing-based smart parking systems: from deterministic propagation modeling to practical deployment 

      Celaya Echarri, Mikel Upna Orcid; Froiz Míguez, Iván; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; López Iturri, Peio Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      The traditional process of finding a vacant parking slot is often inefficient: it increases driving time, traffic congestion, fuel consumption and exhaust emissions. To address such problems, smart parking systems have ...
    • Building standardized and secure mobile health services based on social media 

      Trigo Vilaseca, Jesús Daniel Upna Orcid; Rubio, Óscar J.; Martínez de Espronceda Cámara, Miguel Upna Orcid; Alesanco, Álvaro; Alenza García, José Francisco Upna Orcid; Serrano Arriezu, Luis Javier Upna Orcid (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      Mobile devices and social media have been used to create empowering healthcare services. However, privacy and security concerns remain. Furthermore, the integration of interoperability biomedical standards is a strategic ...
    • Bulk-driven CMOS linear transconductance-cell for AC amplifiers with very low cut-off frequency 

      Ocampo-Hidalgo, Juan J.; Domínguez, Miguel Á.; Cruz Blas, Carlos Aristóteles de la Upna Orcid; Carrillo, Juan M. (Elsevier, 2023)   Artículo / Artikulua
      This manuscript proposes a novel linearized transconductor for AC amplifiers with a very low cut-off frequency. The cell uses an alternative solution that is based on a modified source-degeneration OTA, using two bulkdriven ...
    • Bull’s-eye antenna with circular polarization at millimeter waves based on ridge gap waveguide technology 

      Pérez Quintana, Dayan Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Beruete Díaz, Miguel Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      In this communication, a Bull’s-Eye (BE) antenna with circular polarization (CP) based on ridge gap waveguide (RGW) technology is numerically and experimentally demonstrated. The structure is excited from the bottom with ...
    • C and L band fiber lasers enhanced by ultrafast laser inscribed artificial backscatter reflectors 

      Pérez Herrera, Rosa Ana Upna Orcid; Roldán Varona, Pablo; Sánchez-González, Arturo; Rodríguez Cobo, Luis; López Higuera, José Miguel; López-Amo Sáinz, Manuel Upna Orcid (Optica, 2022)   Artículo / Artikulua  OpenAccess
      This letter presents an experimental comparison between two linear-cavity erbiumdoped fiber lasers (EDFL) assisted by two different artificial backscatter fiber-based reflectors. Both reflectors were inscribed by femtosecond ...
    • The Canfranc Axion Detection Experiment (CADEx): search for axions at 90 GHz with Kinetic Inductance Detectors 

      Aja, Beatriz; Arguedas Cuendis, Sergio; Arregui Padilla, Iván Upna Orcid; Artal, Eduardo; Barreiro, R. Belén; Casas, Francisco J.; Ory, Marina C. de; Díaz-Morcillo, Alejandro; Fuente, Luisa de la; Gallego, Juan Daniel; García-Barceló, José María; Gimeno, Benito; Gómez, Alicia; Granados, Daniel; Kavanagh, Bradley J.; Gómez Laso, Miguel Ángel Upna Orcid; Lopetegui Beregaña, José María; Lozano-Guerrero, Antonio José; Magaz, María T.; Martín-Pintado, Jesús; Martínez-González, Enrique; Miralda-Escudé, Jordi; Monzó-Cabrera, Juan; Najarro de la Parra, Francisco; Navarro-Madrid, José R.; Nuñez Chico, Ana B.; Pascual, Juan Pablo; Pelegrin, Jorge; Peña Garay, Carlos; Rodríguez, David; Socuéllamos, Juan M.; Teberio Berdún, Fernando Upna Orcid; Teniente Vallinas, Jorge Upna Orcid; Vielva, Patricio; Vila, Iván; Vilar, Rocío; Villa, Enrique (IOP Publishing, 2022)   Artículo / Artikulua  OpenAccess
      We propose a novel experiment, the Canfranc Axion Detection Experiment (CADEx), to probe dark matter axions with masses in the range 330–460 μeV, within the W-band (80–110 GHz), an unexplored parameter space in the ...
    • Characterization of multilayer coupling based on square complementary split ring resonator for multiport device implementation 

      Jarauta Ayensa, Eduardo Upna; Iriarte Galarregui, Juan Carlos Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      The advent of context-aware environments and related applications demands a high degree of connectivity, with new spectral bands and related radio resource management functionalities in the current 5G bands and foreseen ...
    • A Chebyshev transformer-based microstri-to-groove-gap-waveguide inline transition for MMIC packaging 

      Pérez Escudero, José Manuel Upna Orcid; Torres García, Alicia E. Upna Orcid; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      The gap waveguide technology has become an alternative to millimeter- and submillimeter-wave electronic circuit packaging thanks to the loss reduction associated with its use. In this paper, a simplified design of an inline ...
    • Class AB amplifier with enhanced slew rate and GBW 

      Garde Luque, María Pilar Upna Orcid; López Martín, Antonio Upna Orcid; Algueta-Miguel, Jose M. Upna Orcid; Ramírez-Angulo, Jaime; González Carvajal, Ramón (John Wiley & Sons, 2019)   Artículo / Artikulua  OpenAccess
      The design of a micropower class AB operational transconductance amplifier with large dynamic current to quiescent current ratio is addressed. It is based on a compact and power-efficient adaptive biasing circuit and a ...
    • Cloud tomography applied to sky images: a virtual testbed 

      Mejía, Felipe A.; Kurtz, Ben; Levis, Aviad; Parra Laita, Íñigo de la Upna Orcid; Kleissl, Jan (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      Two tomographic techniques are applied to two simulated sets of sky images with different cloud fraction. The Algebraic Reconstruction Technique (ART) is applied to optical depth maps from sky images to reconstruct 3-D ...
    • CMOS first-order all-pass filter with 2-Hz pole frequency 

      Paul, Anindita; Ramírez-Angulo, Jaime; López Martín, Antonio Upna Orcid; González Carvajal, Ramón (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      A CMOS fully integrated all-pass filter with an extremely low pole frequency of 2 Hz is introduced in this paper. It has 0.08-dB passband ripple and 0.029-mm2 Si area. It has 0.38-mW power consumption in strong inversion ...
    • Cobalt detection using fluorescent dye layers 

      Armenta-Serna, Fernando Arturo; Fuentes-Rubio, Yadira A.; Domínguez Cruz, René; García-Garza, Luis Antonio; Baldovino Pantaleón, Oscar; Ruiz Zamarreño, Carlos Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      In this paper, we report the preliminary results regarding the use of fluorescent dye calcein (C30H26N2O13) as a sensor for the detection of cobalt levels in aqueous solutions. The sensor cell based on calcein is built by ...
    • El código internacional para los buques que operen en aguas polares y su incidencia en el transporte marítimo 

      Zurutuza Arigita, Iñaki Upna Orcid (Aranzadi, 2022)   Capítulo de libro / Liburuen kapitulua
    • A combination of a vibrational electromagnetic energy harvester and a giant magnetoimpedance (GMI) sensor 

      Beato López, Juan Jesús Upna Orcid; Royo, Isaac Upna Orcid; Algueta-Miguel, Jose M. Upna Orcid; Gómez Polo, Cristina Upna Orcid (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      An energy harvesting device combined with a giant magnetoimpedance (GMI) sensor is presented to analyze low frequency vibrating systems. An electromagnetic harvester based on magnetic levitation is proposed for the electric ...
    • Combined dynamic programming and region-elimination technique algorithm for optimal sizing and management of lithium-ion batteries for photovoltaic plants 

      Berrueta Irigoyen, Alberto Upna Orcid; Heck, Michael; Jantsch, Martin; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      The unpredictable nature of renewable energies is drawing attention to lithium-ion batteries. In order to make full utilization of these batteries, some research works are focused on the management of existing systems, ...
    • Combining radiative cooling and light trapping strategies for improved performance of PERC bifacial silicon solar cells 

      Urdiroz Urricelqui, Unai; Itoiz Goñi, Iñigo; Sevilla Moróder, Joaquín Upna Orcid; Andueza Unanua, Ángel María Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      This work investigates the impact of combining light trapping and radiative cooling on bifacial solar panels. While several techniques have been proposed to enhance the efficiency of solar panels, their combination can ...

      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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