Browsing by Subject "Electromagnetic measurements"

Now showing items 1-20 of 22

    • A parallel finite-element method for three-dimensional controlled-source electromagnetic forward modelling 

      Puzyrev, Vladimir; Koldan, Jelena; de la Puente, Josep; Houzeaux, Guillaume; Vázquez, Mariano; Cela, José M. (Wiley-Blackwell, 2013-02-18)
      Article
      Open Access
      We present a nodal finite-element method that can be used to compute in parallel highly accurate solutions for 3-D controlled-source electromagnetic forward modeling problems in anisotropic media. Secondary coupled-potential ...

    • A review of block Krylov subspace methods for multisource electromagnetic modelling 

      Puzyrev, Vladimir; Cela, José M. (Wiley-Blackwell, 2015-08)
      Article
      Open Access
      Practical applications of controlled-source electromagnetic modeling require solutions for multiple sources at several frequencies, thus leading to a dramatic increase of the computational cost. In this paper we present ...

    • A test setup for the characterization of Lorentz-force MEMS magnetometers 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (2021-09-13)
      Article
      Open Access
      Lorentz-force MEMS magnetometers are interesting candidates for the replacement of magnetometers in consumer electronics products. Plenty of works in the literature propose MEMS magnetometers, their readout circuits and ...

    • Algebraic multigrid preconditioning within parallel finite-element solvers for 3-D electromagnetic modelling problems in geophysics 

      Koldan, Jelena; Puzyrev, Vladimir; de la Puente, Josep; Houzeaux, Guillaume; Cela, José M. (Wiley-Blackwell, 2014-06)
      Article
      Open Access
      We present an elaborate preconditioning scheme for Krylov subspace methods which has been developed to improve the performance and reduce the execution time of parallel node-based finite-element solvers for three-dimensional ...

    • APD outdoors time-domain measurements for impulsive noise characterization 

      Pous Solà, Marc; Azpúrua Auyanet, Marco Aurelio; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      A novel measurement and post-processing technique for estimating if impulsive noise is capable of degrading the performance of digital communication systems (DCS) is presented. It is based on the well-known capability of ...

    • Assessment of edge-based finite element technique for geophysical electromagnetic problems: efficiency, accuracy and reliability 

      Castillo Reyes, Octavio; de la Puente, Josep; Puzyrev, Vladimir; Cela, José M. (International Center for Numerical Methods in Engineering (CIMNE), 2015-04)
      Conference lecture
      Open Access
      In Finite Element Methods for solving electromagnetic field problems, the use of Edge Elements has become very popular. In fact, Edge Elements are often said to be a cure to many difficulties that are encountered (particularly ...

    • BEXUS30 – ELFI: Measuring Schumann resonances in the atmosphere 

      Jelonek, Jonas; Stephan, Jonas; Bochmann, David; Gebken, Lars (Universitat Politècnica de Catalunya, 2022-04-29)
      Conference lecture
      Open Access
      The ELFI project was one of nine BEXUS experiments carried in two stratospheric balloons in 2021. The aim of the experiment was to develop a system for the non-stationary measurement of electromagnetic waves in the extremely ...

    • Bidimensional scattering of tm and te polarized waves by dielectric 

      Mallorquí Franquet, Jordi Joan; Vaquer Bonnin, Miguel; Cardama Aznar, Ángel; Jofre Roca, Lluís (EUROPEAN MICROWAVE CONFERENCE MANAGEMENT COMMITEE REED EXHIBITION COMPANIES, 1993)
      Conference report
      Open Access
      In the study of electromagnetic radiation effects over dielectric bodies, effective numerical methods are needed. At present, there is a lack of tools for measuring this effects and due to the huge growth of microwave ...

    • Characterization of time domain EM field double-loaded curved loop probe 

      Pous Solà, Marc; Quílez Figuerola, Marcos; Fernández Chimeno, Mireya; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      In this paper, we present and analyze the performance of a double-loaded curved loop probe to measure simultaneously electric and magnetic fields (EMF). The aim is to construct a probe that can be fitted to non-planar ...

    • Design and validation of an ultra-low noise magnetometer for the LISA mission 

      Sentís Garzón, Josep (Universitat Politècnica de Catalunya, 2021-07-06)
      Bachelor thesis
      Open Access
      Covenantee:   Institut d'Estudis Espacials de Catalunya
      The dissertation main purpose is to design, validate and evaluate the performance of an ultra-low noise magnetometer based on an Anisotropic Magnetoresistance. The overall study covers insights over sub-millihertz frequencies, ...

    • Diseño y construcción de un magnetómetro para la obtención de las variaciones rápidas de la declinación magnética 

      Arriba Bodelón, Jorge de (Universitat Politècnica de Catalunya, 2008-12-22)
      Master thesis (pre-Bologna period)
      Open Access
      Como núcleo del trabajo, se ha llevado a cabo la construcción de un magnetómetro. Basado en el experimento que presentó R. J. Livesey en 1982 a la Sociedad Astronómica Británica, y aplicando técnicas de reconocimiento y ...

    • Edge-elements for geophysical electromagnetic problems: a new implementation challenge 

      Castillo Reyes, Octavio; de la Puente, Josep; Puzyrev, Vladimir; Cela, José M. (2015-05)
      Conference lecture
      Open Access

    • Estudio de técnicas electromagnéticas de prospección del subsuelo 

      Feria Rodríguez, Daniel (Universitat Politècnica de Catalunya, 2015-06-30)
      Master thesis (pre-Bologna period)
      Open Access
      Este estudio se basa principalmente en la Geofísica Aplicada, a la que muchos se refieren como Prospección Geofísica. Dicha ciencia es la aplicación de la Física al estudio de la parte más superficial de la corteza terrestre, ...

    • Identificació, mesura i anàlisi de la contaminació electromagnètica al Tecnocampus 

      Marín Valdivielso, Enric (Universitat Politécnica de Catalunya, 2015)
      Bachelor thesis
      Open Access
      En aquest projecte es realitza un exhaustiu estudi sobre el conjunt d’emissions electromagnètiques no ionitzants d’alta freqüència presents en el recinte universitari del TecnoCampus. Per tant, s’identifiquen i s’analitzen ...

    • Impact of temperature on the electromagnetic compatibility susceptibility of operational amplifiers 

      Fernández García, Raúl; Gil Galí, Ignacio (2012)
      Conference lecture
      Open Access
      In this paper the impact of temperature on the electromagnetic susceptibility of operational amplifiers at different frequencies is presented. The IEC 62132-4 direct power injection standard has been used with several ...

    • Improving time-domain EMI measurements through digital signal processing 

      Azpúrua Auyanet, Marco Aurelio; Pous Solà, Marc; Cakir, S.; Silva Martínez, Fernando; Cetinta, M. (2015-07)
      Article
      Restricted access - publisher's policy
      This article is intended to provide a set of recommended practices for improving of the Time-Domain EMI measurement systems by means of digital signal processing. We have focused on two major aspects: the optimal configuration ...

    • Planar array diagnostic from cylindrical near-field measurements 

      Romeu Robert, Jordi; Blanch Boris, Sebastián; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 1990)
      Conference report
      Open Access

    • Quasi-digital conversion for resistive devices: application in GMR-based IC current sensors 

      Reig, C.; Cubells, Miquel; De Marcellis, A.; Madrenas Boadas, Jordi; Cardoso, S.; Freitas, P.P. (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      Resistive devices, including sensors, are used in a huge range of applications within different scenarios. When a complete system is considered, a quasi-digital output is often recommendable. If the conversion is operated ...

    • Robust extreme value estimation for full time-domain EMI measurements 

      Azpúrua Auyanet, Marco Aurelio; Pous Solà, Marc; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      A robust approach for estimating the expected maximum levels of radiofrequency electromagnetic emissions is proposed. The expected maximum peak value is intended to provide a statistical approximation for the worst case ...

    • Rogowski coil sensors for measuring lightning strike currents on mechanical aircraft joints 

      Solé Lloveras, Jordi; Azpúrua Auyanet, Marco Aurelio; Quílez Figuerola, Marcos; Silva Martínez, Fernando (2023-01-10)
      Article
      Open Access
      The study of currents flowing through the fuselage of an airplane is of vital importance from the standpoint of electromagnetic compatibility due to their potential for causing severe failures on embedded systems. Direct ...