Browsing Comunicaciones y ponencias de congresos DIEC - IEKS Biltzarretako komunikazioak eta txostenak by Issue Date
Now showing items 1-20 of 154
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Aluminum coated fiber optic sensor for enhancing flow rate measurement
A water flow and velocity aluminum-coated Fiber Bragg Grating sensor system for open channels was designed, simulated and tested. The sensing head was designed, ruggedized and customized to measure velocities at ... -
Low-voltage CMOS bulk-driven buffer with bootstrapping technique for gain enhancement and THD-noise reduction
In this paper, a bootstrapping technique is applied to a bulk-driven voltage buffer for canceling the gate-source transconductance in order to improve the cell gain, the linearity and reduce the input-referred noise. The ... -
Multipactor breakdown analysis of Ku-band meandered low-pass filter
In this work, a very compact rectangular waveguide low-pass filter with meandered topology based on commensurate lines for Ku-band satellite applications is analysed for high-power handling capabilities. The device consists ... -
Control strategy for a droop-controlled grid-connected DFIG wind turbine
The application of droop control techniques without inner current control loops to doubly-fed induction generator (DFIG) based wind turbines does not allow to provide a stable response at all operating points in terms of ... -
Comparison of a slotted SIW antenna covered with metasurface vs. a traditional array
In this article we compare two solutions to improve the radiation pattern of a slotted Substrate Integrated Waveguide (SIW) antenna: use of an E-plane array and covering it with a metasurface (MTS). To this aim, we compare ... -
Filtro paso banda en tecnología groove gap waveguide con altura de pines reducida para facilitar su fabricación
In this work, a novel topology of groove gap waveguide (GGW) technology is presented to facilitate the fabrication process by Computer Numerical Control (CNC) milling. GGW has been proposed as an interesting alternative ... -
Alfalfa quality detection by means of VIS-NIR optical fiber reflection spectroscopy
A first approach study for the classification of alfalfa (medicago sativa) quality has been performed by means of VIS-NIR optical fiber reflection spectroscopy. Reflection spectral data has been obtained from alfalfa samples ... -
Long-range and high-resolution traffic monitoring based on pulse-compression DAS and advanced vehicle tracking algorithm
(Optica Publishing Group, 2022) Contribución a congreso / Biltzarrerako ekarpenaWe demonstrate traffic monitoring over tens of kilometres of road using an enhanced distributed acoustic sensing system based on optical pulse compression and a novel transformed-domain-based processing scheme with enhanced ... -
Bloch surface wave resonances generated with dielectric stack of high refractive index contrast deposited on a D-shaped optical fiber for sensing applications
(Optica Publishing Group, 2022) Contribución a congreso / Biltzarrerako ekarpenaA 5-layer stack composed of TiO2 and Al2O3, two materials with a high refractive index contrast, was deposited on a D-shaped fiber to generate Bloch surface wave resonances with an improved figure of merit. -
Quasi-distributed vibration analysis of a cantilever beam using OFDR and weak reflectors
(Optica Publishing Group, 2022) Contribución a congreso / Biltzarrerako ekarpenaThis work evaluates the performance of a quasi-distributed in-line velocimeter based on OFDR and weak reflectors to measure vibration every 10 cm, using a cantilever beam under free-end damping and during an impact-hammer test. -
Compensation of phase-noise in pulse-compression phase-sensitive OTDR sensors
(Optica Publishing Group, 2022) Contribución a congreso / Biltzarrerako ekarpenaWe introduce a technique to compensate the performance impairments due to the laser phase noise in long-range pulse-compression DAS sensors. Experiments demonstrate the use of the longest duration pulse compression waveform ... -
Narrowband and spectrally robust thermal emission from metallic thin films on top of epsilon-near-zero substrates
The absorption and emission of infrared radiation by ultra-thin metallic films is a key element in several thermal engineering applications such as heat and energy management, and thermal camouflage. However, ultra-thin ... -
Noise in coherently radiating periodic structures beam forming networks
Following the noise wave theory, beam forming networks based on Coherently Radiating Periodic Structures (CORPS-BFN) are analysed and proven to be capable of enhancing the Signal to Noise Ratio of the system by analogically ... -
Development of a water flow and velocity optical fiber sensor for field testing
(Optica Publishing Group, 2022) Contribución a congreso / Biltzarrerako ekarpenaA water flow and velocity fiber optic sensor system was developed and tested. The sensing head was especially developed and ruggedized to measure velocities at different depths, in order to calculate the discharge in channels. -
f-HybridMem: a consensual analysis via fuzzy consensus measures and penalty functions
This paper considers the consensual analysis in decision-making (CDM) processes based on fuzzy logic (FL) and interval-valued fuzzy logic (IVFL), providing a CDM-strategy, by exploring the axiomatic properties of fuzzy ... -
Generalization of QL-operators based on general overlap and general grouping functions
Firstly, this work discusses the main conditions guarantying that general overlap (grouping) functions can be obtained from n-dimensional overlap (grouping) functions. Focusing on QL-implications, which are usually ... -
Modelling and operation of 6-pulse thyristor rectifiers for supplying high power electrolyzers
This paper presents a detailed analysis of a 6-pulse thyristor rectifier aimed at supplying high power electrolyzers. For this purpose, an analytical model of the three-phase controlled rectifier with AC-side inductance ... -
Design alternatives for a submm-wave Fabry-Perot cavity antenna
This paper discusses different design alternatives for a high gain planar antenna at 240 GHz. The antenna is based on a Fabry-Perot configuration, where two different partial reflection surfaces (PRS) are considered: a ... -
Compact pillbox reflector based on geodesic lens
We propose a pillbox antenna in combination with a geodesic lens at 60 GHz. The antenna is implemented in a dual-layer parallel plate waveguide. The waves from a geodesic lens in a first layer, after being reflected by a ... -
Integration of second-life batteries in residential microgrids and fast charging stations
The potential of batteries from electric vehicles to be given a second life in stationary applications could be starting to become a reality in few years. However, the technical and economic feasibility of such second-life ...