Browsing Artículos de revista DIEE - IEES Aldizkari artikuluak by Title
Now showing items 184-203 of 292
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On the performance of the zoned fishnet metamaterial lens with positive and negative reference phase
Pacheco Peña, Víctor
; Minin, Igor V.; Minin, Oleg V.; Beruete Díaz, Miguel (IEEE, 2016)
Artículo / Artikulua 
In this letter, several converging fishnet metalenses are designed using both the zoning and reference phase techniques. They are engineered with a focal length of 1.5λ0 at the design frequency of 55 GHz (λ0 = 5.45 mm) at ... -
One-way quasiplanar terahertz absorbers using nonstructured polar dielectric layers
Rodríguez Ulibarri, Pablo; Serebryannikov, Andriy E.; Beruete Díaz, Miguel (American Physical Society, 2017)
Artículo / Artikulua
A concept of quasiplanar one-way transparent terahertz absorbers made of linear isotropic materials is presented. The resulting structure consists of a homogeneous absorbing layer of polar dielectric, GaAs, a dispersion-free ... -
Optical fiber networks for remote fiber optic sensors
Fernández Vallejo, Montserrat; López-Amo Sáinz, Manuel (MDPI, 2012)
Artículo / Artikulua
This paper presents an overview of optical fiber sensor networks for remote sensing. Firstly, the state of the art of remote fiber sensor systems has been considered. We have summarized the great evolution of these systems ... -
Optical fiber sensors based on nanoparticle-embedded coatings
Urrutia Azcona, Aitor; Goicoechea Fernández, Javier ; Arregui San Martín, Francisco Javier (Hindawi Publishing Corporation, 2015)
Artículo / Artikulua
The use of nanoparticles (NPs) in scientific applications has attracted the attention of many researchers in the last few years. The use of NPs can help researchers to tune the physical characteristics of the sensing coating ... -
Optical fibre sensors using graphene-based materials: a review
Hernáez Sáenz de Zaitigui, Miguel; Ruiz Zamarreño, Carlos ; Melendi Espina, Sonia; Bird, Liam; Mayes, Andrew; Arregui San Martín, Francisco Javier (MDPI, 2017)
Artículo / Artikulua
Graphene and its derivatives have become the most explored materials since Novoselov and Geim (Nobel Prize winners for Physics in 2010) achieved its isolation in 2004. The exceptional properties of graphene have attracted ... -
Optimization in nanocoated D-shaped optical fiber sensors
Del Villar, Ignacio; Zubiate Orzanco, Pablo ; Ruiz Zamarreño, Carlos ; Arregui San Martín, Francisco Javier ; Matías Maestro, Ignacio (Optical Society of America, 2017)
Artículo / Artikulua
Nanocoated D-shaped optical fibers have been proven as effective sensors. Here, we show that the full width at half minimum (FWHM) of lossy mode resonance can be reduced by optimizing the nanocoating width, thickness and ... -
Optimization of a pin surface as a solution to suppress cavity modes in a packaged W-band microstrip receiver
Rebollo Mugueta, Ainara; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo (IEEE, 2014)
Artículo / Artikulua
A pin surface structure has been used in the upper metal plate of a packaged W-band RF front-end receiver in order to suppress the propagation of unwanted modes. A full parametric analysis of the periodic structure within ... -
Optimization of sensitivity in long period fiber gratings with overlay deposition
Del Villar, Ignacio; Matías Maestro, Ignacio ; Arregui San Martín, Francisco Javier ; Lalanne, Philippe (Optical Society of America, 2005)
Artículo / Artikulua
The deposition of an overlay of higher refractive index than the cladding in a Long Period Fiber Grating (LPFG) permits to improve the sensitivity to ambient refractive index changes in a great manner. When the overlay is ... -
Optimization of sensors based on multimode interference in single-mode–multimode– single-mode structure
Del Villar, Ignacio; Socorro Leránoz, Abián Bentor ; Corres Sanz, Jesús María ; Arregui San Martín, Francisco Javier ; Matías Maestro, Ignacio (IEEE, 2013)
Artículo / Artikulua
By coating a single-mode–multimode–single-mode (SMS) structure with a complex refractive index thin-film the central wavelength of the transmission and attenuation bands of the optical spectrum can be shifted. By adequate ... -
An optimized method based on digitalized Lissajous curve to determine lifetime of luminescent materials on optical fiber sensors
Ridruejo Muro, Adrián; Acha Morrás, Nerea de; Elosúa Aguado, César ; Matías Maestro, Ignacio ; Arregui San Martín, Francisco Javier (Hindawi Publishing Corporation, 2016)
Artículo / Artikulua
A method is proposed to determine lifetime of luminescent emissions based on the phase shift measurement employing the digitalized Lissajous representation: this diagram has been typically used with analogical algorithms, ... -
Optimized strain long-period fiber grating (LPFG) sensors operating at the dispersion turning point
Del Villar, Ignacio; Fuentes, Omar; Chiavaioli, Francesco; Corres Sanz, Jesús María ; Matías Maestro, Ignacio (IEEE, 2018)
Artículo / Artikulua
Two phenomena for enhancing the sensitivity of longperiod fiber gratings are combined toward an increase of the sensitivity to strain of this type of devices: the dispersion turning point (DTP) and the cladding diameter ... -
Optimizing interoperability between video-oculographic and electromyographic systems
Navallas Irujo, Javier; Ariz Galilea, Mikel ; Villanueva Larre, Arantxa ; San Agustín, Javier; Cabeza Laguna, Rafael (Rehabilitation Research & Development Service, 2011)
Artículo / Artikulua
A new system is presented that enhances the interoperability between a video-oculographic (VOG) system for mouse movement control and an electromyographic (EMG) system for mouse click detection. The proposed VOG-EMG system ... -
Orthogonally polarized optical single sideband modulation for microwave photonics processing using stimulated Brillouin scattering
Sagüés García, Mikel; Loayssa Lara, Alayn (Optical Society of America, 2010)
Artículo / Artikulua
We present a novel technique to generate orthogonally polarized optical single sideband modulated signals. The modulation scheme is based on all optical stimulated Brillouin scattering processing of the optical carrier of ... -
Overcoming non-local effects and Brillouin threshold limitations in Brillouin optical time domain sensors
Ruiz Lombera, Rubén; Urricelqui Polvorinos, Javier; Sagüés García, Mikel ; Mirapeix, Jesús; López Higuera, José Miguel; Loayssa Lara, Alayn (IEEE, 2015)
Artículo / Artikulua
We demonstrate, for the first time to our knowledge, a Brillouin optical time domain analysis (BOTDA) sensor that is able to operate with a probe power larger than the Brillouin threshold of the deployed sensing fiber ... -
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 ... -
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 ... -
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 ... -
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 ...
