Recent Submissions

  • Hydrogen-based energy storage for a distributed generation system 

    San Martín Biurrun, Idoia Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (Spanish Hydrogen Association, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    One of the most typical distributed generation systems are electrical microgrid, which consist on small electrical grids, generally connected to the main grid, with a decentralized management structure. Electrical microgrids ...
  • Improvement of corona breakdown threshold (peak power handling) in smooth-profiled microstrip filters 

    Ahmad, Jamil; Hussain, Jabir; Arregui Padilla, Iván Upna Orcid; Martín Iglesias,  Petronilo; Arnedo Gil, Israel; Gómez Laso, Miguel Ángel Upna Orcid; Lopetegui Beregaña, José María (2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper, the PPHCs of two filter design techniques, stepped-impedance (SI) and smooth-profile (SP), are presented for four design prototypes. Smooth-profiled filters feature smooth variations in the characteristic ...
  • Temperature measurements on overhead lines using fiber Bragg grating sensors 

    Barón, F.; Amortegui, F. J.; Daniel, P.; Varón, M.; Álvarez Botero, Germán Andrés (IEEE, 2017)   Capítulo de libro / Liburuen kapitulua  OpenAccess
    This paper shows the results of temperature measurements on an overhead power transmission line segment under controlled conditions using Fiber Bragg Grating (FBG) sensors. An optical fiber with three FBG sensors enclosed ...
  • Diseño robusto de filtros paso-banda de banda W en tecnología Gap Waveguide impresos en 3D 

    Santiago Arriazu, David; Tamayo-Domínguez, Adrián; Gómez Laso, Miguel Ángel Upna Orcid; Lopetegui Beregaña, José María; Fernández-González, José Manuel; Martínez, Ramón; Arregui Padilla, Iván Upna Orcid (URSIUniversidad de Extremadura, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A 3D-printed bandpass filter for the W-band is proposed in this work. The use of the higher-order TE10n modes in groove gap waveguide (GGW) technology is analyzed and shown to ease the manufacturing requirements. The design ...
  • Integración de múltiples stubs en filtros de saltos de impedancias de alta selectividad 

    Gómez Laso, Miguel Ángel Upna Orcid; Sami, Abdul Upna; Lopetegui Beregaña, José María; Martin Iglesias, Petronilo; Álvarez Botero, Germán Andrés; Pons Abenza, A; Arregui Padilla, Iván Upna Orcid (URSIUniversidad de Extremadura, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Rectangular waveguide commensurate-line stepped-impedance bandpass filters have been shown to have an increased fabrication robustness using conventional CNC milling. In this paper, their frequency response is improved by ...
  • Asymmetrical firing angle modulation for 12-pulse thyristor rectifiers supplying high-power electrolyzers 

    Iribarren Zabalegui, Álvaro Upna; Barrios Rípodas, Ernesto Upna Orcid; Elizondo Martínez, David Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper presents an asymmetrical firing angle modulation strategy for 12-pulse thyristor rectifiers aimed at supplying high-power electrolyzers, which allows to reduce the size of the passive filter and the static ...
  • Suppressing open stopband for terahertz periodic microstrip leaky-wave antennas 

    Haddad, Thomas; Biurrun Quel, Carlos Upna Orcid; Lu, Peng; Kaya, Hacer; Mohammad, Israa; Stöhr, Andreas (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper reports on a periodic microstrip Leaky-wave antenna (LWA). The open stopband issue is suppressed by altering the unit cell using a matching stub. The developed LWA is based on a grounded InP-substrate of 50 ...
  • A technology review and field testing of a soil water quality monitoring system 

    Afridi, Waqas A. K.; Akhter, Fowzia; Vitoria Pascual, Ignacio Upna Orcid; Mukhopadhyay, Subhas C. (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Soil water quality is one of the most influential factors in ensuring the productivity of agricultural farms. Soil water quality and soil quality are hugely dependent on each other. Hence, it is essential to have a clear ...
  • Lossy mode resonances biosensor for the detection of C-reactive protein 

    Zubiate Orzanco, Pablo Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Sánchez Zábal, Pedro Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (Optica Publishing Group, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The fabrication and characterization of optical fiber biosensor based on Lossy Mode Resonances (LMR) to detect C-reactive protein (CRP) are presented. Indium tin oxide (ITO) coatings deposited on side-polished D-shaped ...
  • Optical fiber sensors for asphalt structures monitoring 

    Bravo Acha, Mikel Upna Orcid; Rota Rodrigo, Sergio Upna; Leandro González, Daniel Upna Orcid; Loayssa Lara, Alayn; Urricelqui Polvorinos, Javier Upna Orcid; Bravo Acha, A.; Bravo Navas, M.; Mitxelena, J. R.; Martínez Mazo, J. J.; López-Amo Sáinz, Manuel Upna Orcid (Optica Publishing Group, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A novel optical fiber installation method was explored for asphalt monitoring. Glassfiber polymer encapsulated SMF was installed in the intermediate and surface layers in order to study the strain sensitivity with a ...
  • A new ABS conductive material to develop fully 3D-printed patch antennas 

    Jiménez Peña, Javier; Irigoyen, Joseba; Aresti Bartolomé, Maite; Ederra Urzainqui, Íñigo Upna Orcid; Bravo Larrea, Javier Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Additive manufacturing technology is rapidly overcoming some of its initial limitations and, thus, creating a very useful engineering option for prototyping complex geometries for a wide range of electronic devices. Based ...
  • Building global competencies: a strategic approach to internationalization of engineering education 

    Berrueta Irigoyen, Alberto Upna Orcid; Samanes Pascual, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (Eindhoven University of Technology and Fontys University of Applied Sciences, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    International mobility is an essential aspect of undergraduate education that enables students to acquire the necessary competences required by the European Higher Education Area (EHEA). However, small universities such ...
  • Integrated platform for microfluidics based cell culture applications 

    Dudala, Sohan; Dubey, Satish K.; Javed, Arshad; Ozcariz Celaya, Aritz Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Goel, Sanket (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The ongoing developments in the field of microfluidics-based cell culture have led to a significant interest in systems for their visualization and control. The existing cell culture systems are limiting due to cost, ...
  • A novel ku-band circularly-polarized horn antenna based on a ridged wall 

    Marzo Oyarbide, Andoni; Teberio Berdún, Fernando Upna Orcid; Teniente Vallinas, Jorge Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper, a novel wideband (31.5 % bandwidth) circularly-polarized antenna based on a ridged wall is presented. A pair of ridges on the inner wall of the horn serves as an inbuilt polarizer, which can generate left-hand ...
  • One-year analysis of road condition using FBG arrays 

    Corera Orzanco, Íñigo Upna Orcid; Pradas Martínez, Javier Upna; Leandro González, Daniel Upna Orcid; Bravo Acha, Mikel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, it is presented an analysis of FBG arrays installed in a public road. The arrays were installed in a newly paved urban road and were monitored for more than one year. The study evidences the permanent deformation ...
  • Women, Science and Technology Chair—Promoting women’s careers in stem fields 

    Pérez Artieda, Miren Gurutze Upna Orcid; Gómez Fernández, Marisol Upna Orcid; Aranguren Garacochea, Patricia Upna Orcid; Barrenechea Tartas, Edurne Upna Orcid; Catalán Ros, Leyre Upna Orcid; Díaz Lucas, Silvia Upna Orcid; Jurío Munárriz, Aránzazu Upna Orcid; Martínez Ramírez, Alicia Upna Orcid; Millor Muruzábal, Nora Upna Orcid; Ortiz Nicolás, Amalia; San Martín Biurrun, Idoia Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The Chair of Women, Science and Technology of the Universidad Pública de Navarra (UPNA) aims to increase the participation of women in the fields of science and technology. Scientific culture and dissemination are the main ...
  • Multicore fiber sensors for strain measurement towards traffic monitoring 

    Sánchez González, Arturo; Pradas Martínez, Javier Upna; Corera Orzanco, Íñigo Upna Orcid; Bravo Acha, Mikel Upna Orcid; Leandro González, Daniel Upna Orcid; Dauliat, Romain; Jamier, Raphael; Roy, Philippe; Pérez Herrera, Rosa Ana Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, two new interferometric sensors based on multicore optical fibers for the measurement of strain with the ultimate goal of traffic monitoring are presented. The operating principle of each sensor relied on ...
  • Erbium-doped fiber ring cavity for the measurement of refractive index variations 

    Pérez Herrera, Rosa Ana Upna Orcid; Soares, Liliana; Novais, Susana; Frazão, Orlando; Silva, Susana (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, an erbium-doped fiber ring cavity based on a 3dB optical coupler for refractive index measurements is presented and experimentally verified. This interrogation system, based on a 1 x 2 optical coupler, uses ...
  • Fiber optic mirror fabrication using general-purpose metallic pigments 

    Jaso Gallego, Isabel; Mejia-Olivo, Edison; Bravo Acha, Mikel Upna Orcid; Leandro González, Daniel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, the potential of using general-purpose paints to fabricate highly reflective, low-cost optical mirrors is evaluated. The study shows that high-reflectivity mirrors can be created in standard single-mode fiber ...
  • Measurement of paracetamol concentration using a fiber laser system 

    Soares, Liliana; Pérez Herrera, Rosa Ana Upna Orcid; Novais, Susana; Ferreira, António; Frazão, Orlando; Silva, Susana (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A linear fiber laser system for measurements of paracetamol concentration is experimentally demonstrated. The cavity is based on a fiber loop mirror and an FBG centered at 1567.8 nm. The sensing head corresponds to a ...

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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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