Mostrando ítems 1-20 de 1146

    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Efficient implementation of GALS systems over comercial synchronous FPGAs: a new approach 

      García Lasheras, Javier (2007)   Congreso / Biltzarra
      This paper introduces a new approach for implementing Glocally Asynchronous – Locally Synchronous (GALS) systems over commercial available Field Programmable Gate Arrays (FPGA). This new vision is aimed to overcome the ...
    • Signal processing in ocean bottom seismographs for refraction seismology 

      Rodríguez Barbarin, Iban; Mànuel Lázaro, Antonio; Carlosena García, Alfonso; Bermúdez, Antoni; Río, Joaquín del; Panahi, Shahram Shariat (IEEE, 2006)   Artículo / Artikulua
      This paper presents some experimental results on the application of signal processing techniques to underwater seismic signals. The novelty of this paper stems from the fact that it is the first paper, to the best of the ...
    • Independent component analysis as a tool to eliminate artifacts in EEG. A quantitative study 

      Iriarte, Jorge; Urrestarazu, Elena; Valencia Ustárroz, Miguel; Alegre, Manuel; Malanda Trigueros, Armando; Viteri, César; Artieda, Julio (Lippincott, Williams & Wilkins, 2003)   Artículo / Artikulua
      Independent component analysis (ICA) is a novel technique that calculates independent components from mixed signals. A hypothetical clinical application is to remove artifacts in EEG. The goal of this study was to apply ...
    • A novel design method for phase-locked loops of any order and type 

      Carlosena García, Alfonso; Mànuel Lázaro, Antonio (IEEE, 2006)   Congreso / Biltzarra
      In this paper a novel approach to the design of PLLs is presented, which can be used regardless of their Order and Type. The method stems from the fact that high-frequency poles in the loop filter determine filtering ...
    • Electromagnetic band gap technology for millimetre wave applications 

      Ederra Urzainqui, Íñigo (2004)   Tesis doctoral/Doktoretza tesia
      En esta tesis se ha estudiado el uso de estructuras Electromagnetic Bandgap (EBG) para frecuencias en la banda de las millimétricas. Estas frecuencias son muy apropiadas para aplicaciones de generación de imágenes ...
    • Millimeter-wave extraordinary transmission: connection to metamaterials and technological applications 

      Beruete Díaz, Miguel (2006)   Tesis doctoral/Doktoretza tesia
      The phenomenon of Enhanced Transmission also happens in the millimeter wave range, as it happened in optical frequencies. This experimental fact shows that this is a phenomenon mostly linked to the periodic structure regardless ...
    • Diseño de guías de onda cuasi-ópticas para modos gaussianos de orden superior 

      Río Bocio, Carlos del (1996)   Tesis doctoral/Doktoretza tesia
      En este trabajo se presenta un nuevo método de diseño de guías de onda cuasi-ópticas para modos gaussianos, a frecuencias milimétricas. En concreto, se centrará en la generación de modos gaussianos de orden superior, ...
    • Amorphous glass-coated ferromagnetic wires in microwave engineering 

      Liberal Olleta, Íñigo (2013)   Tesis doctoral/Doktoretza tesia
      En esta tesis se ha estudiado el uso de hilos ferromagnéticos recubiertos de vidrio en ingeniería de microondas. Para este fin, se han formulado modelos analíticos y equivalentes circuitales de la interacción entre un ...