Now showing items 1-14 of 14

  • Design and linearization of an efficient class E power amplifier using a test bench based on development boards 

    Flomenbaum, Julieta (Universitat Politècnica de Catalunya, 2017-02-14)
    Master thesis
    Open Access
    Covenantee:  Universidad de Cantabria
    Nowadays, with the increase in small satellites applications for Earth observation, the need for high efficient transmitters capable of delivering the required power, taking into account not only the power consumption ...
  • Disseny d'amplificador d'àudio DCI-NPC de 5 nivells i estudi d'errors en el modulador 

    Resano Inza, Tomás (Universitat Politècnica de Catalunya, 2012-06-28)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] Implementation of a prototype and modellating of the errors in the modulator.
  • Disseny d’un amplificador d’àudio basat en inversor amb topologia DCI-NPC multinivell 

    Ruiz Illana, Germán (Universitat Politècnica de Catalunya, 2008)
    Master thesis
    Restricted access - author's decision
    Un amplificador de tres nivells proporciona una sèrie d’avantatges: la tensió a suportar per els interruptors es redueix a la meitat en relació a un disseny de dos nivells. Per tant, podem obtenir dos avantatges contraposats: ...
  • Dynamic selection and update of digital predistorter coefficients for power amplifier linearization 

    Pham, Thi Quynh Anh; López Bueno, David; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís
    Conference lecture
    Restricted access - publisher's policy
    In this paper, a new method for dynamically estimating and updating the coefficients of a digital predistortion (DPD) linearizer is presented. By means of the partial least squares (PLS) algorithm, the basis matrix used ...
  • Equalizer and amplifier 

    Subirana, Jordi (Cork Institute of Technology, 2005)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
  • Evaluation of digital linearization techniques for PAs under 5G waveform operation in spectrum sharing scenarios 

    Cañal Blanco, Mireia; Mars Perez, Aitor (Universitat Politècnica de Catalunya, 2016-09-15)
    Bachelor thesis
    Open Access
    This project has been oriented to improve the efficiency and the linearization of power amplifiers (PA) with the combination of crest factor reduction (CFR) techniques and digital predistortion techniques (DPD). These ...
  • Low-power current-reused RF front-end based on optimized transformers topology 

    Gil Galí, Ignacio; Cairó, Ignasi; Sieiro, Javier José; López-Villegas, José María (2009-10-09)
    Article
    Open Access
    This paper discusses the design, analysis and performance of a 2.4 GHz fully integrated low-power current-reused receiver front-end implemented in 0.18 μm CMOS technology. The front-end is composed of a single-to-differential ...
  • Low-power RF front-end design for wireless applications 

    Gil Galí, Ignacio (2010-02-11)
    Conference lecture
    Restricted access - publisher's policy
  • Model order reduction techniques for power amplifier digital predistortion linearization 

    Mozos Ruiz, José Miguel (Universitat Politècnica de Catalunya, 2016-07-25)
    Bachelor thesis
    Open Access
    To address the known trade-off between linearity and efficiency of the PA, several linearization techniques have been proposed in the literature. Among them, the most widespread technique is now digital predistortion (DPD) ...
  • Optimized passive devices for low-power LNA design 

    Gil Galí, Ignacio; Fernández García, Raúl; Sieiro, Javier; López-Villegas, José María (2010)
    Conference report
    Open Access
    This paper addresses the design of high-Q passive inductors and differential transformers in a low-power lownoise amplifier (LNA) application. The passives quality in resonant LC tanks as well as in the matching network ...
  • Planck-LFI 44-GHz back end module 

    Aja, Beatriz; Pascual, Juan Pablo; Fuente, Luisa de la; Detratti, M.; Artal Latorre, Eduardo; Mediavilla, Asier; Paco Sánchez, Pedro Antonio de; Pradell i Cara, Lluís (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-10-31)
    Article
    Open Access
    This work describes the principle of operation, assembly and performance of one branch of the 44 GHz back end module (BEM) for the Planck low frequency instrument (LFI). This subsystem constitutes a fully representative ...
  • Provisión de servicios de acceso de banda ancha a internet/intranet para ubicaciones de difícil cobertura 

    Mas Ortoneda, Joan Marc (Universitat Politècnica de Catalunya, 2016-05)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    The objective of this work was to design and ultimately provide a two-way universal broadband connectivity service for a national Spanish public entity and all its regional branches where IP traffic could be routed end-to-end ...
  • Rejection of periodic disturbances using MRAC with minimal controller synthesis 

    Larco Barros, Ciro Mauricio; Olm Miras, Josep Maria; Costa Castelló, Ramon (2016)
    Conference report
    Restricted access - publisher's policy
    The tracking/rejection of periodic disturbances in linear systems is achievable via internal model principle-based techniques, such as repetitive control. However, when the frequency of the signal to track/reject is uncertain ...
  • X-band UAV-SAR optimization and validation 

    Royo, Miquel (Universitat Politècnica de Catalunya, 2018-07)
    Bachelor thesis
    Open Access
    This project consists on the improvement of an already validated System, as it is the work of a finished PhD Thesis. Due to the wide range of that thesis, many sub blocs need to be revaluated and optimized. That is the ...