Exploració per tema "Amplificadors -- Alta freqüència"

Ara es mostren els items 1-5 de 5

    • A new digital predictive predistorter for behavioral power amplifier linearization 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Cesari Bohigas, Albert; Silveira, Daniel D. (Institute of Electrical and Electronics Engineers (IEEE), 2007-06)
      Article
      Accés obert
      This letter presents a new digital adaptive predistorter (PD) for power amplifier (PA) linearization based on a nonlinear auto-regressive moving average (NARMA) structure. The distinctive characteristic of this PD is ...

    • Amplificador clase F para telefonía móvil celular 

      Sanchez Henckell, Grey Franck (Universitat Politècnica de Catalunya, 2012-07)
      Projecte/Treball Final de Carrera
      Accés obert
      Actualmente, con el rápido crecimiento de las tecnologías de telefonía móvil celular, cada vez se pide más eficiencia energética a los terminales móviles. Para poder satisfacer esta necesidad, este proyecto presenta el ...

    • Design and assembly of a class E power amplifier @2GHz 

      Ambrós Moreno, Jordi (Universitat Politècnica de Catalunya, 2011-09-05)
      Projecte Final de Màster Oficial
      Accés obert
      This project aims to achieve the design and construction of a class E RF power amplifier (PA) with the maximum efficiency in 2GHz band. This device will be used for broadband wireless transmissions. In addition, the other ...

    • Digital Predistortion of Wideband Satellite Communication Signals with Reduced Observational Bandwidth and Reduced Model Order Complexity 

      Brinco De Sousa, Pedro Miguel (Universitat Politècnica de Catalunya, 2014-10-17)
      Projecte Final de Màster Oficial
      Accés obert
      The increase in the demand for wireless communications from the user-end point of view calls for an infrastructure that is constantly more capable, reliable and efficient. One of the critical nodes in the telecommunications ...

    • Incremental behavioral modeling of envelope-dependent nonlinear distortion in dynamic supply power amplifiers 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Vizarreta Paz, Pedro Pablo (Unión Científica Internacional de Radio, 2011)
      Text en actes de congrés
      Accés obert
      This paper presents behavioral modeling of an envelope tracking (ET) power amplifier (PA) excited by an slewrate limited envelope. In order to relax the slew-rate requirements of current efficient envelope amplifiers ...