Listar Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila por título
Mostrando ítems 462-481 de 648
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Parameter-independent control for battery chargers based on virtual impedance emulation
Urtasun Erburu, Andoni
; Berrueta Irigoyen, Alberto ; Sanchis Gúrpide, Pablo ; Marroyo Palomo, Luis (IEEE, 2018)
Artículo / Artikulua 
An effective battery voltage regulation is fundamental to extend battery lifetime and to avoid overvoltage. However, the design of this regulation is complicated due to the wide battery impedance range, which, when dealing ... -
Parametric study of pin surface used to suppress undesired modes in a packaged W-band microstrip receiver
Rebollo Mugueta, Ainara; Maestrojuán Biurrun, Itziar ; Larumbe Gonzalo, Belén ; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo (IEEE, 2013)
Contribución a congreso / Biltzarrerako ekarpena
A pin surface structure has been used in order to suppress undesired modes in a packaged W-band RF front-end receiver. A parametric analysis has been carried out in order to determine the optimum dimensions. Resonances ... -
Paraxiality considerations of higher order gaussian modes
Río Bocio, Carlos del ; Gonzalo García, Ramón ; Sorolla Ayza, Mario (1996)
Contribución a congreso / Biltzarrerako ekarpena
Frequently, gaussian modes are used as free space wave equation solutions. This is not true since they are obtained assuming certain paraxial character in them. In this paper, we present an original study of the condition ... -
Passive microwave component design using inverse scattering: theory and applications
Arnedo Gil, Israel ; Arregui Padilla, Iván ; Chudzik, Magdalena ; Teberio Berdún, Fernando ; Lujambio Genua, Aintzane ; Benito Pertusa, David ; Lopetegui Beregaña, José María ; Gómez Laso, Miguel Ángel (Hindawi, 2013)
Artículo / Artikulua
We briefly review different synthesis techniques for the design of passive microwave components with arbitrary frequency response, developed by our group during the last decade. We provide the theoretical foundations based ... -
Performance analysis of IEEE 802.15.4 compliant wireless devices for heterogeneous indoor home automation environments
Nazábal Urriza, Juan Antonio; López Iturri, Peio ; Azpilicueta Fernández de las Heras, Leyre ; Falcone Lanas, Francisco Javier ; Fernández Valdivielso, Carlos (Hindawi, 2012)
Artículo / Artikulua
The influence of topology as well as morphology of complex indoor scenarios in the deployment of wireless sensor networks and wireless systems applied to home and building automation systems is analyzed. The existence of ... -
Performance analysis of ZigBee wireless networks for AAL through hybrid ray launching and collaborative filtering
López Iturri, Peio ; Casino, Fran; Aguirre Gallego, Erik ; Azpilicueta Fernández de las Heras, Leyre ; Falcone Lanas, Francisco Javier ; Solanas, Agusti (Hindawi, 2016)
Artículo / Artikulua
This paper presents a novel hybrid simulation method based on the combination of an in-house developed 3D ray launching algorithm and a collaborative filtering (CF) technique, which will be used to analyze the performance ... -
Performance comparison and design guidelines for Type II and Type III PLLs
Ugarte Gil, Mikel; Carlosena García, Alfonso (Birkhauser, 2015)
Artículo / Artikulua
The advantages provided by Type III PLLs are poorly known, since these devices are very often considered unstable and difficult, or even impossible, to design. In this paper, a performance comparison between Type II and ... -
Phase reversal technique applied to fishnet metalenses
Pacheco-Peña, Víctor ; Minin, Igor V.; Minin, Oleg V.; Beruete Díaz, Miguel (Hindawi, 2018)
Artículo / Artikulua
In this work, the fishnet metamaterial is applied to several converging metalenses by combining the zoning, reference phase, and phase reversal techniques. First, the zoning and reference phase techniques are implemented ... -
Phase-shift based BOTDA measurements tolerant to non-local effects
Urricelqui Polvorinos, Javier ; Sagüés García, Mikel ; Loayssa Lara, Alayn (SPIE, 2013)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate a BOTDA sensor based on the use of the Brillouin phase shift that performs measurements tolerant to non local effects. This technique raises opportunities to increase the distance covered by these sensors ... -
Phasorial differential pulse-width pair technique for long-range Brillouin optical time-domain analysis sensors
Urricelqui Polvorinos, Javier ; Sagüés García, Mikel ; Loayssa Lara, Alayn (Optical Society of America, 2014)
Artículo / Artikulua
We introduce a novel phasorial differential pulse width pair (PDPP) method for Brillouin optical time domain analysis (BOTDA) sensors that combines spatial resolution enhancement with increased tolerance to non local ... -
Phasorial DPP-BOTDA sensor tolerant to non-local effects
Urricelqui Polvorinos, Javier ; Mariñelarena Ollacarizqueta, Jon ; Sagüés García, Mikel ; Loayssa Lara, Alayn (SPIE, 2014)
Contribución a congreso / Biltzarrerako ekarpena
We introduce a modification of the differential pulse width pair technique in a BOTDA sensor based on a phase modulated probe wave and RF demodulation. This provides a differential Brillouin phasorial signal with high ... -
Photonic crystal fiber interferometer coated with a PAH/PAA nanolayer as humidity sensor
López Torres, Diego ; Elosúa Aguado, César ; Villatoro, Joel; Zubia, Joseba; Rothhardt, Manfred; Schuster, Kay; Arregui San Martín, Francisco Javier (Elsevier, 2017)
Artículo / Artikulua
In this paper, an optical fiber interferometric humidity sensor is presented. The device consists of 1 cmlong segment of photonic crystal fiber (PCF) spliced to standard single mode fibers (SMFs), forming an interferometer: ... -
Photonic crystal fiber temperature sensor based on quantum dot nanocoatings
Larrión Zabaleta, Beatriz; Hernáez Sáenz de Zaitigui, Miguel ; Arregui San Martín, Francisco Javier ; Goicoechea Fernández, Javier ; Bravo Larrea, Javier ; Matías Maestro, Ignacio (Hindawi / Wiley, 2009)
Artículo / Artikulua
Quantum dot nanocoatings have been deposited by means of the Layer-by-Layer technique on the inner holes of Photonic Crystal Fibers (PCFs) for the fabrication of temperature sensors. The optical properties of these sensors ... -
Photonic crystal fibers for sensing applications
Rodrigues Pinto, Ana Margarida; López-Amo Sáinz, Manuel (Hindawi Publishing Corporation, 2012)
Artículo / Artikulua
Photonic crystal fibers are a kind of fiber optics that present a diversity of new and improved features beyond what conventional optical fibers can offer. Due to their unique geometric structure, photonic crystal fibers ... -
Planar DNG superstrate for dipole antenna gain enhancement
Sáenz Sáinz, Elena; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Ikonen, Pekka; Tretyakov, Sergei A.; Maagt, Peter de (2007)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, a volumetric double-negative (DNG) superstrate based on grids of dipoles and wires for dipole antenna applications is proposed. -
Planar holographic metasurfaces for terahertz focusing
Kuznetsov, Sergei A.; Astafev, Mikhail A.; Beruete Díaz, Miguel ; Navarro Cía, Miguel (Springer Nature, 2015)
Artículo / Artikulua
Scientists and laymen alike have always been fascinated by the ability of lenses and mirrors to control light. Now, with the advent of metamaterials and their two-dimensional counterpart metasurfaces, such components can ... -
Planar magnetoinductive wave transducers: theory and applications
Freire, M. J.; Marqués, R.; Medina, Francisco; Gómez Laso, Miguel Ángel ; Martín, F. (AIP Publishing, 2004)
Artículo / Artikulua
Transduction of magnetoinductive waves (MIWs) in planar technology is demonstrated. A transducer consisting of a one-dimensional periodic array of metallic split squared ring resonators (SSRR), placed between a pair of ... -
Planoconcave lens by negative refraction of stacked subwavelength hole arrays
Beruete Díaz, Miguel ; Navarro Cía, Miguel ; Sorolla Ayza, Mario ; Campillo, Igor (Optical Society of America, 2008)
Artículo / Artikulua
This work presents the design of a planoconcave parabolic negative index metamaterial lens operating at millimeter wavelengths fabricated by using stacked subwavelength hole arrays. A staircase approximation to the ideal ... -
Plasmonics and metamaterials at terahertz frequencies
Torres Landívar, Víctor (2014)
Tesis doctoral / Doktoretza tesia
The research presented in this manuscript falls under the framework of metamaterials and plasmonics. It is mainly focused on applications at terahertz (THz) frequencies, a spectral band located between microwaves and ... -
Polarization diversity for Brillouin distributed fiber sensors based on a double orthogonal pump
Urricelqui Polvorinos, Javier ; López Fernandino, Felipe; Sagüés García, Mikel ; Loayssa Lara, Alayn (SPIE, 2014)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate a novel Brillouin optical time domain analysis sensor deploying a polarization diversity technique which eliminates the need for polarization scrambling, providing measurements that are largely immune to the ...
