Exploració per tema "Modulation (Electronics)"

Ara es mostren els items 21-40 de 64

    • Development of a 15W dual automotive wireless charger 

      Centeno Arjona, Joan (Universitat Politècnica de Catalunya, 2020-01)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      The purpose of this thesis is to show the design of an automotive system from a hardware engineer trainee point of view, developed in a technological company. The system designed is a dual on-board wireless charger for ...

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

      Martín Prieto, Álvaro (Universitat Politècnica de Catalunya, 2017-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   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)
      Projecte/Treball Final de Carrera
      Accés obert
      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)
      Comunicació de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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
      Accés obert
      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)
      Treball Final de Grau
      Accés obert
      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 ...

    • Frequency domain analysis and filter design of continuous wave frequency modulated optical feedback signal for photonic sensing 

      Jha, Ajit; Cenkeramadi, Linga Reddy; Royo Royo, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Optical feedback (OF) refers to the beating of the frequency shifted back reflected laser emission from the remote (vibrating) object with that of incident radiation in the laser cavity cause rapid fluctuation of the laser ...

    • FSK transceiver implementation by means of reprogramming the FPGA of the USRP 

      Lax Cortina, Jorge (Universitat Politècnica de Catalunya, 2014-12)
      Projecte/Treball Final de Carrera
      Accés restringit per acord de confidencialitat
      Realitzat a/amb:   Karlsruher Institut für Technologie

    • Galileo Signal Generation. Simulation Analysis 

      Canalda Pedrós, Roger (Universitat Politècnica de Catalunya, 2009-04)
      Projecte/Treball Final de Carrera
      Accés obert
      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
      Accés obert
      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)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      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 ...

    • Hedy Lamarr: cinema, torpedes i cintes de paper perforat 

      Oliver Segura, José (2023-03-02)
      Text en actes de congrés
      Accés obert
      Hedy Lamarr va ser, durant molts anys, una estrella de Hollywood, i així va passar a la posteritat. Tanmateix, Hedy Lamarr també era una inventora que no va veure reconeguda la seva aportació fins al final de la seva vida, ...

    • 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
      Accés obert
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Treball Final de Grau
      Accés obert
      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 ...

    • LCD displays performance comparison by MTF measurement using the white noise stimulus method 

      Mitja, Carles; Escofet Soteras, Jaume (2011-01-24)
      Article
      Accés restringit per política de l'editorial

    • Localized IR communications with Thymio II 

      Soldevila Vilarrasa, Josep (Universitat Politècnica de Catalunya / École polytechnique fédérale de Lausanne, 2014-02-10)
      Projecte/Treball Final de Carrera
      Accés obert
      [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)
      Projecte/Treball Final de Carrera
      Accés obert
      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 ...

    • Multiple lookup table predistortion for adaptive modulation 

      Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Montoro López, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2005-12)
      Article
      Accés obert
      This paper presents a multiple LUT digital adaptive predistorter based on a Hammerstein model that uses the return channel to feed back information from the receiver, concretely the bit error rate (BER), in order to ...