Browsing Artículos de revista DIEE - IEES Aldizkari artikuluak by Title
Now showing items 1-20 of 362
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250 km ultra long remote sensor system based on a fiber loop mirror interrogated by an OTDR
Bravo Acha, Mikel
; Baptista, José Manuel; Santos, José Luís; López-Amo Sáinz, Manuel ; Frazão, Orlando (Optical Society of America, 2011)
Artículo / Artikulua 
A 253 km ultra long remote displacement sensor system based on a fiber loop mirror interrogated by a commercial OTDR is proposed and experimentally demonstrated. The use of a fiber loop mirror increases the signal to noise ... -
3D-printed 96 GHz bull’s-eye antenna with off-axis beaming
Beaskoetxea Gartzia, Unai ; Maci, Stefano; Navarro Cía, Miguel ; Beruete Díaz, Miguel (IEEE, 2017)
Artículo / Artikulua
Reducing the profile, footprint and weight of antennas embarked on aircrafts, drones or satellites has been a long pursued objective. Here we tackle this issue by developing a millimeter-wave 96 GHz elliptical Bull’s-Eye ... -
46-km-long Raman amplified hybrid double-bus network with point and distributed Brillouin sensors
Fernández Vallejo, Montserrat; Olier Aguado, David; Zornoza Indart, Ander; Pérez Herrera, Rosa Ana ; Díaz Lucas, Silvia ; Elosúa Aguado, César ; Bariáin Aisa, Cándido ; Loayssa Lara, Alayn ; López-Amo Sáinz, Manuel (IEEE, 2012)
Artículo / Artikulua
We experimentally demonstrate a 46-km hybrid network that combine point and distributed Brillouin sensors. The proposed sensor network multiplexes low-cost intensity point sensors based on fiber-optic tapers, which are ... -
77-GHz high-gain bull’s-eye antenna with sinusoidal profile
Beaskoetxea Gartzia, Unai ; Pacheco-Peña, Víctor ; Orazbayev, Bakhtiyar ; Akalin, Tahsin; Maci, Stefano; Navarro Cía, Miguel (IEEE, 2015)
Artículo / Artikulua
A high-gain Bull’s-Eye leaky-wave horn antenna working at 77 GHz with sinusoidal profile has been designed, fabricated, and experimentally measured. The influence of the number of periods on the gain and beamwidth is ... -
Accurate circuit modeling of fishnet structures for negative-index-medium applications
Torres Landívar, Víctor; Mesa, Francisco; Navarro Cía, Miguel ; Rodríguez Berral, Raúl; Beruete Díaz, Miguel ; Medina, Francisco (IEEE, 2016)
Artículo / Artikulua
Metallic plates with a two-dimensional (2D) periodic distribution of sub-wavelength apertures are known to exhibit extraordinary transmission of electromagnetic waves. Stacking two or more of such plates gives place to the ... -
Actividad electromiográfica (EMG) durante el pedaleo, su utilidad en el diagnóstico de la fatiga en ciclistas
Córdova Martínez, Alfredo; Nuin, Iván; Fernández-Lázaro, Diego; Latasa Zudaire, Iban Alexander ; Rodríguez Falces, Javier (SEMED - FEMEDE, 2017)
Artículo / Artikulua
La fatiga muscular tiene múltiples definiciones, pero con una misión especial cual es la misión protectora, avisando al organismo sobre la debilidad o la aparición de una incapacidad funcional. En esta revisión se hace ... -
Adaptive voltage control of the DC/DC boost stage in PV converters with small input capacitor
Urtasun Erburu, Andoni ; Sanchis Gúrpide, Pablo ; Marroyo Palomo, Luis (IEEE, 2013)
Artículo / Artikulua
In the case of photovoltaic (PV) systems, an adequate PV voltage regulation is fundamental in order to both maximize and limit the power. For this purpose, a large input capacitor has traditionally been used. However, when ... -
Advances in residential design related to the influence of geomagnetism
Glaria, Francisco; Arnedo Gil, Israel ; Sánchez Ostiz, Ana (MDPI, 2018)
Artículo / Artikulua
Since the origin of the Modern Movement, there has been a basic commitment to improving housing conditions and the well-being of occupants, especially given the prediction that 2/3 of humanity will reside in cities by 2050. ... -
All-dielectric periodic terajet waveguide using an array of coupled cuboids
Minin, Igor V.; Minin, Oleg V.; Pacheco-Peña, Víctor ; Beruete Díaz, Miguel (AIP Publishing, 2015)
Artículo / Artikulua
In this paper, the recently proposed technique to produce photonic jets (terajets at terahertz (THz) frequencies) using 3D dielectric cuboids is applied in the design of a mesoscale cuboid-chain wave- guide. The chains are ... -
All-fiber lasers through photonic crystal fibers
Rodrigues Pinto, Ana Margarida; López-Amo Sáinz, Manuel (Science Wise Publishing & De Gruyter, 2013)
Artículo / Artikulua
A review on all-fiber lasers based on photonic crystal fibers is presented. Photonic crystal fibers present improved features beyond what conventional optical fibers can offer. Due to their geometric versatility, photonic ... -
All-PM fiber loop mirror interferometer analysis and simultaneous measurement of temperature and mechanical vibration
Leandro González, Daniel ; López-Amo Sáinz, Manuel (IEEE, 2018)
Artículo / Artikulua
In this work, a new all-polarization maintaining (PM) fiber loop mirror interferometer is proposed and validated as temperature and mechanical vibration sensor. The scheme employs the arms of a PM coupler as communication ... -
Analysis and description of HOLTIN service provision for AECG monitoring in complex indoor environments
Led Ramos, Santiago ; Azpilicueta Fernández de las Heras, Leyre ; Aguirre Gallego, Erik ; Martínez de Espronceda Cámara, Miguel ; Serrano Arriezu, Luis Javier ; Falcone Lanas, Francisco Javier (MDPI, 2013)
Artículo / Artikulua
In this work, a novel ambulatory ECG monitoring device developed in-house called HOLTIN is analyzed when operating in complex indoor scenarios. The HOLTIN system is described, from the technological platform level to its ... -
Analysis matrix for smart cities
Branchi, Pablo Emilio; Fernández Valdivielso, Carlos ; Matías Maestro, Ignacio (MDPI, 2014)
Artículo / Artikulua
The current digital revolution has ignited the evolution of communications grids and the development of new schemes for productive systems. Traditional technologic scenarios have been challenged, and Smart Cities have ... -
Analysis of one-dimensional photonic band gap structures with a liquid crystal defect towards development of fiber-optic tunable wavelength filters
Del Villar, Ignacio ; Matías Maestro, Ignacio ; Arregui San Martín, Francisco Javier ; Claus, Richard O. (Optical Society of America, 2003)
Artículo / Artikulua
A theoretical analysis of a fiber optical photonic band gap based tunable wavelength filter is presented. The design presented here is based on the quarter wave reflector with a liquid crystal defect layer in the middle ... -
Analysis of radio wave propagation for ISM 2.4 GHz wireless sensor networks in inhomogeneous vegetation environments
Azpilicueta Fernández de las Heras, Leyre ; López Iturri, Peio ; Aguirre Gallego, Erik ; Mateo Zozaya, Ignacio; Astrain Escola, José Javier ; Villadangos Alonso, Jesús ; Falcone Lanas, Francisco Javier (MDPI, 2014)
Artículo / Artikulua
The use of wireless networks has experienced exponential growth due to the improvements in terms of battery life and low consumption of the devices. However, it is compulsory to conduct previous radio propagation analysis ... -
Analysis of wireless sensor network topology and estimation of optimal network deployment by deterministic radio channel characterization
Aguirre Gallego, Erik ; López Iturri, Peio ; Azpilicueta Fernández de las Heras, Leyre ; Astrain Escola, José Javier ; Villadangos Alonso, Jesús ; Falcone Lanas, Francisco Javier (MDPI, 2015)
Artículo / Artikulua
One of the main challenges in the implementation and design of context-aware scenarios is the adequate deployment strategy for Wireless Sensor Networks (WSNs), mainly due to the strong dependence of the radiofrequency ... -
Analytical design methodology for Litz-wired high-frequency power transformers
Barrios Rípodas, Ernesto ; Ursúa Rubio, Alfredo ; Marroyo Palomo, Luis ; Sanchis Gúrpide, Pablo (IEEE, 2015)
Artículo / Artikulua
In the last quarter of a century, high-frequency (HF) transformer design has been one of the major concerns to power electronics designers in order to increase converter power densities and efficiencies. Conventional design ... -
Annular apertures in metallic screens as extraordinary transmission and frequency selective surface structures
Rodríguez Ulibarri, Pablo ; Navarro Cía, Miguel ; Rodríguez Berral, Raúl; Mesa, Francisco; Medina, Francisco; Beruete Díaz, Miguel (IEEE, 2017)
Artículo / Artikulua
A 2-D periodic array of annular apertures (or ring slots) is studied using an accurate circuit model. The model accounts for distributed and dynamic effects associated with the excitation of high-order modes operating above ... -
An antibacterial coating based on a polymer/sol-gel hybrid matrix loaded with silver nanoparticles
Rivero Fuente, Pedro J. ; Urrutia Azcona, Aitor ; Goicoechea Fernández, Javier ; Ruiz Zamarreño, Carlos ; Arregui San Martín, Francisco Javier ; Matías Maestro, Ignacio (Springer, 2011)
Artículo / Artikulua
In this work a novel antibacterial surface composed of an organic-inorganic hybrid matrix of tetraorthosilicate and a polyelectrolyte is presented. A precursor solution of tetraethoxysilane (TEOS) and poly(acrylic acid ... -
Application of gold complexes in the development of sensors for volatile organic compounds
Luquin, Asunción ; Elosúa Aguado, César ; Vergara, Elena; Estella, Juncal ; Cerrada, Elena; Bariáin Aisa, Cándido ; Matías Maestro, Ignacio ; Garrido Segovia, Julián José ; Laguna, Mariano (World Gold Council, 2007)
Artículo / Artikulua
Two different kinds of sensors have been developed by using the same kind of vapochromic complexes. The vapochromic materials [Au2Ag2(C6F5)(4)L-2](n) have different colours depending on the ligand L. These materials change, ...
