Now showing items 1-20 of 61

  • Active control of Alfvén eigenmodes inmagnetically confined toroidal plasmas 

    Garcia Muñoz, Manuel; Shaparov, Sergei; Zeeland, Michael A, Van; Ascasibar, Enrique; Cappa, Álvaro; Chen, L; Ferreira, J; Galdon Quiroga, Joaquin; Geiger, Benedikt; González Martin, J; Heidbrink, William W.; Johnson, T; Lauber, Phillipp; Mantsinen, Mervi; Melkinov, Alexander; Nabais, F; Rivero Rodríguez, Juan Francisco; Sanchis Sanchez, Lucía; Schneider, P; Stober, Jörg; Suttrop, Wolfgang; Todo, Yasushi; Vallejos, Pablo; Zonca, Fulvio; AUG and MST1 Teams (IOP Publishing, 2019-03)
    Article
    Open Access
    Alfvén waves are electromagnetic perturbations inherent to magnetized plasmas that can be driven unstable by a free energy associated with gradients in the energetic particles' distribution function. The energetic particles ...
  • Aliasing of the Schumann resonance background signal by sprite-associated Q-bursts 

    Guha, Anirban; Williams, Earle R.; Boldi, Robert; Satori, Gabriella; Nagy, Tamás; Bór, József; Montañá Puig, Juan; Ortega, Pascal (2017-12)
    Article
    Open Access
    The Earth's naturally occurring Schumann resonances (SR) are composed of a quasi-continuous background component and a larger-amplitude, short-duration transient component, otherwise called ‘Q-burst’ (Ogawa et al., 1967). ...
  • A procedure to design wide-band electromagnetically-coupled stacked microstrip antennas based on a simple network model 

    Anguera Pros, Jaume; Puente Baliarda, Carles; Borja, C. (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Conference report
    Restricted access - publisher's policy
    It is well known that microstrip patch antennas have a poor bandwidth due to the small spacing between the patch and the ground plane. A stacked patch configuration has been demonstrated experimentally as a feasible solution, ...
  • Caracterització optoelectrònica del grafè a altes freqüències i anàlisi dels efectes produïts en el grafè degut a diferents substrats 

    Gabriel Cortes, Daniel (Universitat Politècnica de Catalunya, 2015-07-22)
    Master thesis (pre-Bologna period)
    Open Access
    This project represents the continuation of the previous study about the analysis graphene optical and electronic properties over a wide frequency range: terahertz, near-infrared, visible band and near-ultraviolet. In this ...
  • Compression of the MoM matrix using macrobasis functions with a full-controlable accuracy 

    Tamayo Palau, José María; Heldring, Alexander; Rius Casals, Juan Manuel (EurAPP, 2009)
    Conference report
    Open Access
    A new accuracy-controlable method for compressing the MoM impedance matrix of an electromagnetic problem based on a basis change plus a truncation with a threshold is presented here. The idea is to switch to singular basis ...
  • Computational Techniques for LED Optical Microcavities 

    García Santiago, Xavier (Universitat Politècnica de Catalunya, 2015-06-03)
    Master thesis (pre-Bologna period)
    Restricted access - confidentiality agreement
  • COMSOL Simulation for Adaptive Massive MIMO Systems in the Terahertz Band 

    Rul·lan Palou De Comasema, Francisco (Universitat Politècnica de Catalunya, 2014-12-19)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Georgia Institute of Technology
    [ANGLÈS] The communications in the Terahertz Band (0.06-10 THz) are a promising new paradigm for wireless communications in the next decade. Their large available bandwidth, combined with the development of graphene antennas, ...
  • Contact-Free Measurement of Cardiac and Respiratory Activities by Using Thermal Imaging 

    Vilà Calopa, Chantal (Universitat Politècnica de Catalunya, 2014-04-15)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Rheinisch-Westfälische Technische Hochschule Aachen
    [ANGLÈS] Motivation: Real time measurements of respiratory and heart rates are crucial in neonatal intensive care units. The actual technology is based on contact methods that require close-proximity sensing and subject’s ...
  • Cylindrical geometry: a further step in active microwave tomography 

    Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel; Elias Fusté, Antoni; Rius Casals, Juan Manuel; Romeu Robert, Jordi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1991-05-01)
    Article
    Open Access
    A prototype imaging system for active microwave tomography using cylindrical geometry has been developed, making it possible to obtain images of the dielectric properties of biological targets at 2.45 GHz. This configuration ...
  • Database of "in vivo" measurements for quantitative microwave imaging and reconstruction algorithms available 

    Mallorquí Franquet, Jordi Joan; Joachimowicz, N.; Bolomey, J. C. (Jean-Charles); Broquetas Ibars, Antoni (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1995-10-01)
    Article
    Open Access
    Reconstruction algorithms and equipment have been developed for microwave imaging, with emphasis on noninvasive control of deep hyperthermia treatments. Tomographic reconstruction algorithms have also been developed for ...
  • Debye frequency-extended waveguide permittivity extraction for high complex permittivity materials. Concrete setting process characterization 

    Gonzalez, Giselle; Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís (2019-12)
    Article
    Open Access
    A waveguide with central frequency 868 MHz is used in transmission/reflection operation regime to accurately measure the behaviour of the complex permittivity of high complex permittivity granular materials and it has been ...
  • Desarrollo de un cabezal de microondas para a detección de frecuencia Doppler 

    Rubino Rivero, Roselena (Universitat Politècnica de Catalunya, 2010-10)
    Master thesis (pre-Bologna period)
    Open Access
    Este proyecto tiene como finalidad realizar un prototipo de un radar implementado como un cabezal de microondas que pueda detectar frecuencia Doppler a 10,525 GHz en una placa de Microstrip con un sustrato de la empresa ...
  • Diagnóstico de arrays. Estudio comparativo entre campo próximo rectangular y cilíndrico 

    Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1990)
    Conference report
    Open Access
  • Diseño y desarrollo de una aplicación en ArcGIS del modelo de propagación COST 231 

    Díaz Salvador, Sergi (Universitat Politècnica de Catalunya, 2010-06-25)
    Master thesis (pre-Bologna period)
    Open Access
    La finalidad de este Proyecto es el estudio del comportamiento de las ondas electromagnéticas emitidas por una estación base hacia una estación móvil dentro de un entorno urbano. El modelo de propagación utilizado dentro ...
  • Dispositivos no lineales en el infrarrojo: diodos MIM. Funcionamiento y Aplicaciones 

    Comerón Tejero, Adolfo (1981)
    Conference report
    Open Access
    Metal-insulator-metal (MIM) diodes are the fastest classical mixers and rectifiers, with operating frequencies ranging from DC to the near infrared. Their operating principles and applications are reviewed.
  • Disseny d'experiments basats en S.P.R. (Surface Plasmon Resonance) 

    Domènech Domingo, Guillem (Universitat Politècnica de Catalunya, 2018-10)
    Bachelor thesis
    Open Access
    SPR can occur when the electric field of an optical wave penetrates into a metal in total reflexion conditions. The surface plasmonic wave is generated due to the resonance with free electrons in the metal. This phenomenon ...
  • Edge-based electric field formulation in 3D CSEM simulations: A parallel approach 

    Castillo-Reyes, Octavio; de la Puente, Josep; Puzyrev, Vladimir; Cela, José M. (IEEE, 2015-10)
    Conference report
    Open Access
    This paper presents a parallel computing scheme for the data computation that arise when applying one of the most popular electromagnetic methods in exploration geophysics, namely, controlled-source electromagnetic (CSEM). ...
  • Electromagnetic Energy Harvesting in 28nm FD-SOI technology 

    Carnal Fusté, Maria (Universitat Politècnica de Catalunya / Institut National Polythecnique de Grenoble, 2014)
    Bachelor thesis
    Open Access
  • Equip didàctic de testeig del BUS CAN en entorns industrials amb alt contingut d'emissions electromagnètiques 

    Curià Castellnou, Roger (Universitat Politècnica de Catalunya, 2020-02-07)
    Bachelor thesis
    Open Access
    El present treball tÉ com objectiu la construcció d’un equip didàctic que implementi una xarxa d’àrea de controladors basada en el protocol BUS CAN (sigles de l’anglès Controller Area Network) sobre la que es pugui ...
  • Estrategias para acelerar la convergencia del método DNL 

    Bonet Chaple, Ruberto Pedro; Nigro, Norberto; Storti, Mario; Idelsohn Barg, Sergio Rodolfo (Universitat Politènica de Catalunya, 2000)
    Article
    Open Access
    La condición de frontera DNL circular es una condición absorbente usada para el cálculo de ondas exteriores. Dos técnicas numéricas son introducidas para acelerar la convergencia del método DNL circular mediante el empleo ...