Envíos recientes

  • An Optimized Method Based on Digitalized Lissajous Curve to Determine Lifetime of Luminescent Materials on Optical Fiber Sensors 

    Ridruejo Muro, Adrián; De Acha Morrás, Nerea; 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, ...
  • Experimental realization of an epsilon-near-zero graded-index metalens at terahertz frequencies 

    Pacheco Peña, Víctor; Engheta, Nader; Kuznetsov, Sergei; Gentselev, Alexandr; Beruete Díaz, Miguel (American Physical Society, 2017)   Artículo / Artikulua
    The terahertz band has been historically hindered by the lack of efficient generators and detectors, but a series of recent breakthroughs have helped to effectively close the “terahertz gap.” A rapid development of terahertz ...
  • Circuit and multipolar approaches to investigate the balance of powers in 2D scattering problems 

    Liberal Olleta, Íñigo; Ederra Urzainqui, Íñigo; Gonzalo García, Ramón; Ziolkowski, Richard W. (EMW Publishing, 2013)   Artículo / Artikulua
    Circuit and multipolar approaches are presented to investigate the correlation between absorption and scattering processes in 2D problems. This investigation was inspired by earlier works of Prof.R.E. Collin, which pointed ...
  • Simplifying the feeding network for multi-beam circular antenna arrays by using corps 

    Panduro, Marco A.; Río Bocio, Carlos del (EMW Publishing, 2011)   Artículo / Artikulua
    An innovative way to analyze the design of beam-forming networks (BFN) for scannable multi-beam circular antenna arrays using the CORPS (Coherently Radiating Periodic Structures) concept is introduced. This design of ...
  • Polarization-tunable negative or positive refraction in self-complementariness-based extraordinary transmission prism 

    Navarro Cía, Miguel; Beruete Díaz, Miguel; Falcone Lanas, Francisco Javier, Sorolla Ayza, Mario (EMW Publishing, 2010)   Artículo / Artikulua
    Here we report a prism made of stacked quasi-selfcomplementary extraordinary transmission surfaces which allows simultaneously left- and right-handed propagation within the V-band for vertical and horizontal polarizations, ...
  • Ultra-wideband metamaterial filter based on electroinductive-wave coupling between microstrips 

    Navarro Cía, Miguel; Carrasco, J.M.; Beruete Díaz, Miguel; Falcone Lanas, Francisco Javier (EMW Publishing, 2009)   Artículo / Artikulua
    In this work, we analyse the frequency response of microstrip lines coupled by complementary split ring resonators (CSRRs) etched on the ground plane supporting electroinductive waves (EIWs). The single-particle ...
  • Surface waves of finite size electromagnetic band gap woodpile structures 

    Ederra Urzainqui, Íñigo; Iriarte Galarregui, Juan Carlos; Gonzalo García, Ramón (EMW Publishing, 2011)   Artículo / Artikulua
    This paper studies the surface modes at the interface of finite size Electromagnetic Band Gap (EBG) woodpile structures. The impact of different types of woodpile terminations on the properties of these surface modes is ...
  • Wideband backscattering reduction at terahertz using compound reflection grating 

    Orazbayev, Bakhtiyar; Rodríguez Ulibarri, Pablo; Beruete Díaz, Miguel (Optical Society of America, 2017)   Artículo / Artikulua
    Backscattering reduction is usually achieved by using either absorbers or diffractions gratings at the expense of a narrow bandwidth. In this paper, we propose a different strategy based on a metallic compound reflection ...
  • High-order PLL design with constant phase margin 

    Ugarte Gil, Mikel; Carlosena García, Alfonso (IEEE, 2010)   Congreso / Biltzarra
    In this paper we describe a novel procedure to design high-type high-order Phase Locked Loops (PLLs) from lower order prototypes, preserving a prescribed Phase Margin (PM). The method builds on a model recently proposed ...
  • Sculpting metals for anomalous transmission phenomena, complex waves and negative refractive metamaterials: underlying physics and applications 

    Navarro Cía, Miguel (2011)   Congreso / Biltzarra
    In this talk, the potential of controlling the electromagnetic propagation by periodically-textured surfaces is reviewed. It is shown that backward-wave- and slow-wave-propagation, superluminal, effective negative ...
  • Mejora de antenas metalo-dieléctricas en la banda de frecuencias GSM-UMTS mediante elementos en transmisión extraordinaria 

    Illescas, Jesús; Estévez, Aritz; Falcone Lanas, Francisco Javier; Marcotegui, José Antonio (2009)   Congreso / Biltzarra
    In this work a dual band GSM/UMTS antenna is proposed. The antenna is based on a stacked planar structure, where the combination of collimation by Enhanced Transmission and the use of parasitic director elements is ...
  • Evalución de dosimetría de campos electromagnéticos en el entorno interior doméstico 

    Esparza Alfaro, Fermín; Carranza, Noemí; Torres Landívar, Víctor; Falcone Lanas, Francisco Javier; Ramos González, Victoria (2009)   Congreso / Biltzarra
    In this work, the evaluation of radiofrequency exposure in a domestic environment is analyzed. 3D raytracing simulation results are compared with dossimetry measurement results in a probe household in a dense urban area ...
  • Análisis del comportamiento de esquemas de modulación adaptativos en LTE 

    Torres Landívar, Víctor; Esparza Alfaro, Fermín; Falcone Lanas, Francisco Javier (2009)   Congreso / Biltzarra
    In this work, the behaviour of several modulation schemes used in 3GPP R8 or Long Term Evolution (LTE) Systems is analyzed. In order to increase the capacity of future mobile networks, high order modulation schemes like ...
  • Modelling fibrillation potentials: analysis of time parameters in the muscle intracellular action potential 

    Rodríguez Falces, Javier; Malanda Trigueros, Armando; Gila Useros, Luis; Rodríguez Carreño, Ignacio; Navallas Irujo, Javier (IEEE, 2007)   Artículo / Artikulua
    A single fibre action potential (SFAP) can be modelled as the convolution of a biolectrical source and a filter impulse response. In the Dimitrov-Dimitrova (D-D) convolutional model, the first temporal ...
  • A new muscle architecture model with non-uniform distribution of muscle fiber types 

    Navallas Irujo, Javier; Malanda Trigueros, Armando; Gila Useros, Luis; Rodríguez Falces, Javier; Rodríguez Carreño, Ignacio (World Academy of Science, Engineering and Technology, 2007)   Artículo / Artikulua
    According to previous studies, some muscles present a non-homogeneous spatial distribution of its muscle fiber types and motor unit types. However, available muscle models only deal with muscles with homogeneous ...
  • Implementacion de línea de ε negativa en tecnología stripline 

    Illescas, Jesús; Jarauta Ayensa, Eduardo; Estévez, Aritz; Marcotegui, José Antonio; Falcone Lanas, Francisco Javier (2009)   Congreso / Biltzarra
    In this work, a negative-ε equivalent response medium is proponed in stripline technology. To achieve band rejection behaviour, Complementary Split Ring Resonators (CSRR) are placed in the central conductor strip of ...
  • Motor unit action potential duration, II: a new automatic measurement method based on the wavelet transform 

    Rodríguez Carreño, Ignacio; Gila Useros, Luis; Malanda Trigueros, Armando; García Gurtubay, Ignacio; Mallor Giménez, Fermín; Gómez Elvira, Sagrario; Rodríguez Falces, Javier; Navallas Irujo, Javier (Lippincott, Williams & Wilkins, 2007)   Artículo / Artikulua
    To present and evaluate a new algorithm, based on the wavelet transform, for the automatic measurement of motor unit action potential (MUAP) duration. A total of 240 MUAPs were studied. The waveform of each MUAP was ...
  • Motor unit action potential duration, I: variability of manual and automatic measurements 

    Rodríguez Carreño, Ignacio; Gila Useros, Luis; Malanda Trigueros, Armando; García Gurtubay, Ignacio; Mallor Giménez, Fermín; Gómez Elvira, Sagrario; Rodríguez Falces, Javier; Navallas Irujo, Javier (Lippincott, Williams & Wilkins, 2007)   Artículo / Artikulua
    To analyze the variability in manual measurements of motor unit action potential (MUAP) duration and to evaluate the effectiveness of well-known algorithms for automatic measurement. Two electromyographists carried out ...
  • Sensing in coin discriminators 

    Carlosena García, Alfonso; López Martín, Antonio; Arizti, Fernando; Martínez de Guereñu, Ane; Pina Insausti, José L.; García Sayés, Miguel (IEEE, 2007)   Congreso / Biltzarra
    This paper describes the technologies used in coin discriminator devices, stressing the improvements and novel mechanisms introduced by the authors in the past few years as a result of the cooperation with one leading ...
  • Implementación eficiente de sistemas GALS sobre FPGAs 

    García Lasheras, Javier (2007)   Congreso / Biltzarra
    Este artículo presenta un nuevo modelo para la implementación de Sistemas Globalmente Asíncronos – Localmente Síncronos (GALS) sobre Matrices de Puertas Programables por Campo (FPGA) comerciales. Esta nueva visión está ...

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