Browsing by Subject "Electromagnetisme"

Now showing items 1-20 of 201

    • 60GHz material characterization and waveguide antenna array design 

      Papio Toda, Anna (Universitat Politècnica de Catalunya, 2009-01-08)
      Master thesis (pre-Bologna period)
      Open Access
      Cálculo de la permitividad compleja de materiales usados en PCB y diseño de una agrupación de antenas para la banda de 60GHz.

    • A cmos-mems beol 2-axis lorentz-force magnetometer with device-level offset cancellation 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández, Daniel; Madrenas Boadas, Jordi (2020-10-19)
      Article
      Open Access
      Lorentz-force Microelectromechanical Systems (MEMS) magnetometers have been proposed as a replacement for magnetometers currently used in consumer electronics market. Being MEMS devices, they can be manufactured in the ...

    • A comparison of analytical models for resonant inductive coupling wireless power transfer 

      Bou Balust, Elisenda; Alarcón Cot, Eduardo José; Gutiérrez Cabello, Jordi (The Electromagnetics Academy, 2012)
      Conference report
      Open Access
      Recent research in wireless power transfer (WPT) using resonant inductive coupling has demonstrated very high e±ciencies (above 40%) at large distances compared to the antenna dimensions, which has exponentially increased ...

    • A conceptual discussion on electromagnetic units - Extending mechanical units towards a global system of units 

      Jaen Herbera, Javier; Bohigas Janoher, Xavier; Pejuan Alcobé, Arcadi (2014-05)
      Article
      Restricted access - publisher's policy
      A comparative review of the different systems of units that are most usual in electromagnetism leads to the proposal of a new system of units. In this system, the gravitational constant acquires the role of an interaction ...

    • A GNU library for high order boudary integral equation methods in electromagnetism 

      Vico, Felipe (Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
      Conference report
      Open Access
      In this talk we will present a GNU library made by The Simons Foundation, Inc (Leslie Greengard and Manas Racch), Michael O’Neil, Felipe Vico and others. The library can be downloaded from https://fastalgorithms.github.io/ ...

    • A hybrid modal-boundary element method for electromagnetic scattering from arbitrary conducting wedges 

      Cruellas Ibarz, Juan Carlos; Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1990)
      Conference report
      Open Access
      A hybrid technique is used to determine the electromagnetic scattering contribution of arbitrary conducting wedges in electrically large objects. The boundary integral equation is discretized in a fictitious contour, and ...

    • A hydrodynamic model for particle beam-driven plasmon wakefield in carbon nanotubes 

      Martín-Luna, Pablo; Resta-López, Javier; Perera, Aravinda (Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
      Conference report
      Open Access
      Charged particles moving through a carbon nanotube may be used to excite electromagnetic modes in the electron gas produced by π and σ orbitals in the cylindrical graphene shell that makes up a nanotube wall [1]. This ...

    • A methodology for the analysis of the three-dimensional mechanical behavior of a Nb3Sn superconducting accelerator magnet during a quench 

      Ferradas Troitino, Jose; Bajas, H; Bianchi, L; Castaldo, Bernardo; Ferracin, Paolo; Lorenzo Gomez, Jose V (IOP Publishing, 2021)
      Article
      Open Access
      The fast thermal and electromagnetic transients that occur in a superconducting magnet in case of a quench have the potential of generating large mechanical stresses both in the superconducting coils and in the magnet ...

    • A new hybrid mode-matching method for the analysis of inductive obstacles and discontinuities 

      Boria Esbert, Vicente; Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Conference report
      Open Access
      A new and efficient hybrid mode-matching method for the analysis of arbitrarily shaped inductive obstacles and discontinuities is presented. An open-space spectral method is used to model the electrical behavior of the ...

    • A new strategy to design SIW-fed arrays 

      Gómez García, A.; Rubio, J.; Masa-Campos, J.L; Córcoles, J.; Campos-Roca, Y.; Gómez Alcalá, R. (Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
      Conference report
      Open Access
      In this work, a new full-wave strategy, with very low iteration times, is proposed for the optimization and design of antenna arrays fed by substrate integrated waveguides. The device is decomposed into fixed and ...

    • A nodal-based finite element approximation of the Maxwell problem suitable for singular solutions 

      Badia, Santiago; Codina, Ramon (2009-11-17)
      Article
      Open Access
      A new mixed finite element approximation of Maxwell’s problem is proposed, its main features being that it is based on a novel augmented formulation of the continuous problem and the introduction of a mesh dependent ...

    • A Novel Type of Hybrid Reluctance Motor Drive 

      Andrada Gascón, Pedro; Blanqué Molina, Balduino; Martínez Piera, Eusebio; Torrent Burgués, Marcel (Institute of Electrical and Electronics Engineers (IEEE), 2014-08-01)
      Article
      Restricted access - publisher's policy
      In this paper, a novel type of hybrid reluctance motor (HRM) drive is presented. This new motor is characterized by a stator formed by a combination of independent magnetic structures, each one composed of an electromagnet, ...

    • A polarimetric ultra-wide band field scatterometer 

      Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 1995)
      Conference report
      Open Access
      “TERESA” (Terrestrial Radar Equipment for Scattering Analysis) is a ground-based, fully polarimetric scatterometer operative in the S, C, X, and Ku bands. It has been designed to obtain the complete backscattering matrix ...

    • A robust procedure for Damage detection from strain measurements based on Principal Component Analysis 

      Güemes Gordo, Alfredo; Sierra Pérez, Julián; Rodellar Benedé, José; Mujica Delgado, Luis Eduardo (2013-04-17)
      Article
      Restricted access - publisher's policy
      FBGs are excellent strain sensors, because of its low size and multiplexing capability. Tens to hundred of sensors may be embedded into a s tructure, as it has already been demonstrated. Nevertheless, they only afford ...

    • A Simple Closed-Loop Active Gate Voltage Driver for Controlling diC/dt and dvCE/dt in IGBTs 

      Ghorbani, Hamidreza; Sala Caselles, Vicenç; Paredes Camacho, Alejandro; Romeral Martínez, José Luis (2019-01-30)
      Article
      Open Access
      The increase of the switching speed in power semiconductors leads to converters with better efficiency and high power density. On the other hand, fast switching generates some consequences like overshoots and higher switching ...

    • A single antenna ambient noise cancellation method for in-situ radiated EMI measurements in the time-domain 

      Azpúrua Auyanet, Marco Aurelio; Pous Solà, Marc; Silva Martínez, Fernando (2016)
      Conference report
      Open Access
      This paper presents a single antenna ambient noise cancellation method for in-situ radiated emissions measurements performed using an entirely time-domain approach and the sliding window Empirical Mode Decomposition. The ...

    • Accurate, grid-robust and versatile combined-field discretization for the electromagnetic scattering analysis of perfectly conducting targets 

      Úbeda Farré, Eduard; Sekulic, Ivan; Rius Casals, Juan Manuel; Heldring, Alexander (2020-04-15)
      Article
      Open Access
      Recent implementations of the Electric-Field Integral Equation (EFIE) for the electromagnetic scattering analysis of perfectly conducting targets rely on the electric current expansion with the monopolar-RWG basis functions, ...

    • Active control of surface plasmons in hybrid nanostructures 

      Randhawa, Sukanya (Universitat Politècnica de Catalunya, 2012-12-04)
      Doctoral thesis
      Open Access
      Plasmonics nanostructures are becoming remarkably important as tools towards manipulating photons at the nanoscale. They are poised to revolutionize a wide range of applications ranging from integrated optical circuits, ...

    • Adapted ACA algorithm with improved efficiency and compression rate 

      Heldring, Alexander; Úbeda Farré, Eduard; Rius Casals, Juan Manuel (2015)
      Conference report
      Open Access
      This contribution proposes an adapted version of the popular Adaptive Cross Approximation algorithm for block wise compression of Method of Moments impedance matrices. The estimation of the matrix block ...

    • Additive manufacturing of mode converters in Ku and Q bands by selective laser sintering: experience and results 

      Montejo-Garai, José R.; González-Calvo, Miguel; Ruiz-Cruz, Jorge A.; Rebollar, Jesús (Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
      Conference report
      Open Access
      In recent years, Additive Manufacturing (AM) has turned out as a disruptive technology [1]. Fast production, rapid prototyping or adaptability, are essential concepts in sectors such as automotive, aerospace, biotech, ...