Now showing items 21-40 of 61

  • Development of a short-range inductive coupled system for high-rate data transmission 

    Martín Prieto, Álvaro (Universitat Politècnica de Catalunya, 2017-06)
    Bachelor thesis
    Open Access
    Covenantee:  Hochschule Aalen
    The project is based on the creation of an inductive link for data transmission at a 10Mbps rate. Firstly, the frequency response of the link of coupled inductors is analysed, and it is decided, with minimum attenuation ...
  • Digital Beamforming Implementation on an FPGA Platform 

    Bernal Casas, David (Universitat Politècnica de Catalunya, 2007-07)
    Master thesis (pre-Bologna period)
    Open Access
    The objective of the work presented is to implement a Digital Beamforming (DBF) platform for an antenna array receiver designed for the S-DMB system. Our project deals with the design of antenna arrays from a hardware ...
  • Diode-clamped multilevel converters with integrable gate-driver power-supply circuits 

    Busquets Monge, Sergio; Rocabert Delgado, Joan; Crébier, Jean-Christophe; Peracaula Roura, Joan (2009)
    Conference lecture
    Open Access
    This paper presents a novel modulation for a two-stage dc-ac power converter with high-frequency isolation installed in a photovoltaic stand-alone system. The presented modulation, which is designed for the converter ...
  • Effects of nonidealities in switching frequency modulation techniques:application to Coupled Interleaved Multicellular Parallel converters 

    Mon González, Juan; González Díez, David; Ferrer Arnau, Luis Jorge; Labrousse, Denis; Costa, François (2013)
    Conference report
    Open Access
    This paper explores the application of the Variable Delay Frequency Modulation (VDFM) to an Interleaved Multicellular Parallel converter. VDFM is a modulation technique specially intended to reduce conducted EMI generated ...
  • Enhanced phase-shifted PWM carrier disposition for interleaved voltage-source inverters 

    Capellá Frau, Gabriel José; Pou Félix, Josep; Ceballos Recio, Salvador; Konstantinou, Georgios; Zaragoza Bertomeu, Jordi; Agelidis, Vassilios (2014-03-01)
    Article
    Open Access
    This letter presents a novel implementation of pulse width modulation that improves the quality of the line-to-line output voltages in interleaved multiphase voltage-source inverters (VSIs). In multiphase VSIs with n ...
  • Experimentación con sonidos en la placa de desarrollo Open18F4520 

    Manchado Gómez, Alberto (Universitat Politècnica de Catalunya, 2015-01)
    Bachelor thesis
    Open Access
    Este proyecto se centra en la experimentación de sonidos en la placa de desarrollo Open18F4520 del microcontrolador PIC18F4520, con la intención de reproducir melodías mediante la programación de este, presentándose como ...
  • FSK transceiver implementation by means of reprogramming the FPGA of the USRP 

    Lax Cortina, Jorge (Universitat Politècnica de Catalunya, 2014-12)
    Master thesis (pre-Bologna period)
    Restricted access - confidentiality agreement
    Covenantee:  Karlsruher Institut für Technologie
  • Galileo Signal Generation. Simulation Analysis 

    Canalda Pedrós, Roger (Universitat Politècnica de Catalunya, 2009-04)
    Master thesis (pre-Bologna period)
    Open Access
    This work presents the navigation signals and their allocation in the radio frequency band used in the new European Global Navigation Satellite System (GNSS): Galileo. All signals are described mathematically and then ...
  • Generalized PWM-based method for multiphase neutral-point-clamped converters with capacitor voltage balance capability 

    López, Iraide; Ceballos Recio, Salvador; Pou, Josep; Zaragoza Bertomeu, Jordi; Andreu, Jon; Ibarra Basabe, Edorta; Konstantinou, Georgios (2017-06-12)
    Article
    Open Access
    This paper presents a generalized pulse width modulation (PWM)-based control algorithm for multiphase neutral-point-clamped (NPC) converters. The proposed algorithm provides a zero sequence to be added to the reference ...
  • Gravació de senyal de veu en format sigma-delta 

    Rodríguez Estébanez, Jesús (Universitat Politècnica de Catalunya, 2005-04)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Los objetivos principales del proyecto son el estudio de sistemas de conversión de señales analógicas a digitales, para ello se prestará especial atención al sistema convencional de modulación de voz, llamado PCM, y se ...
  • Hybrid modulator for power converters in parallel topology 

    Mon González, Juan; González Díez, David; Balcells Sendra, Josep; Gago Barrio, Javier; Bogónez Franco, Francisco (2012)
    Conference lecture
    Open Access
    This paper presents a new mixed modulator that combines interleaving and spread-spectrum techniques in order to achieve the lowest level of conducted EMI generation. This modulator is addressed to power converters in ...
  • Implementació en una FPGA d'un generador de senyals modulades M-QAM 

    Pulido Escruela, Enric (Universitat Politècnica de Catalunya, 2009-04-28)
    Master thesis (pre-Bologna period)
    Open Access
  • Interleaved operation of three-level neutral point clamped converter legs and reduction of circulating currents under SHE-PWM 

    Capellá Frau, Gabriel José; Pou Félix, Josep; Konstantinou, Georgios (Institute of Electrical and Electronics Engineers (IEEE), 2016-06)
    Article
    Open Access
    Interleaving of voltage-source converter (VSC) legs enables higher output currents per phase, effectively increasing the power rating without increasing semiconductor ratings. However, the interleaved operation results ...
  • Interleaved selective harmonic elimination PWM for single-phase rectifiers in traction applications 

    Konstantinou, Georgios; Agelidis, Vassilios; Pou Félix, Josep (2013)
    Conference report
    Restricted access - publisher's policy
    Interleaved four-quadrant, single-phase rectifiers are widely used in traction applications as part of an AC-DC-AC conversion system. This paper presents selective harmonic elimination pulse-width modulation (SHE-PWM) ...
  • Investigation on Nyquist Modulation and Multiplexing for Fiber-Optic Communications 

    Jubany Ticó, Marc (Universitat Politècnica de Catalunya, 2016-02)
    Bachelor thesis
    Open Access
    Nowadays, the society in which we live, the need to communicate increases every day; therefore, there is a need to improve both spectral efficiency and methods of transmitting data faster. This thesis analyses a new ...
  • Joint temporal-spatial reference beamforming: EIG beamforming 

    Lagunas Hernandez, Miguel A.; Pérez Neira, Ana Isabel; Vázquez, Miguel Ángel (2010)
    Conference report
    Open Access
    Traditional methods for beamforming can be grouped in two families, the time reference beamformer and the spatial reference beamforming. Nevertheless, the increasing demand on receivers for location systems and high bandwidth ...
  • LCD displays performance comparison by MTF measurement using the white noise stimulus method 

    Mitja, Carles; Escofet Soteras, Jaume (2011-01-24)
    Article
    Restricted access - publisher's policy
  • Localized IR communications with Thymio II 

    Soldevila Vilarrasa, Josep (Universitat Politècnica de Catalunya / École polytechnique fédérale de Lausanne, 2014-02-10)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] The goal of this master project is to develop an IR communication protocol for the robot Thymio II in order to use the seven IR proximity sensors existing in the robot, used to detect obstacles around it) to ...
  • Modulation Format Conversion in Future Optical Networks 

    Cano Adalid, Javier (Universitat Politècnica de Catalunya, 2009-03)
    Master thesis (pre-Bologna period)
    Open Access
    The signal generation and receiver schemes of different modulation formats such as on off keying (OOK) in either non‐return to zero (NRZ) or return to zero (RZ), correlative coding and phase‐shift keying (PSK) are described ...
  • On improving phase-shifted PWM for flying capacitor multilevel converters 

    Ghias, Amer M.Y.M.; Pou Félix, Josep; Capellá Frau, Gabriel José; Acuna, Pablo; Agelidis, Vassilios (2016-08-01)
    Article
    Restricted access - publisher's policy
    This letter proposes a phase-shifted pulse-width modulation (PS-PWM) technique for the flying capacitor (FC) multilevel converter that improves the quality of the line-to-line voltages. In traditional PS-PWM, the line-to-line ...