Ara es mostren els items 25-36 de 95

    • La televisió digital terrestre: un color millor... i alguns grisos 

      Berenguer Sau, Jordi (2014-12)
      Article
      Accés restringit per política de l'editorial
      El 3 d’abril de 2010 es va produir la fi de les emissions de televisió analògica a l’Estat espanyol. És el que es coneix com l’apagada analògica. De llavors ençà s’inicià una nova etapa en la radiodifusió de la televisió ...
    • Telecomunicacions 

      Berenguer Sau, Jordi (Proa-Enciclopèdia Catalana SAU, 2014-02-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Analysis of variations of volterra series models for RF power amplifiers 

      Silveira, Daniel D.; Gilabert Pinal, Pere Lluís; Dos Santos, Alexandre B.; Gadringer, Michael E. (2013)
      Article
      Accés restringit per política de l'editorial
      This article discusses several different implementations of Volterra seriesmodels, and performs a fair comparison between them using measured data and well known figures of merit. Among the implemented models, an approach ...
    • Computationally efficient real-time digital predistortion architectures for envelope tracking power amplifiers 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (2013-03-05)
      Article
      Accés obert
      This paper presents and discusses two possible real-time digital predistortion (DPD) architectures suitable for envelope tracking (ET) power amplifiers (PAs) oriented at a final computationally efficient implementation ...
    • Special issue on power amplifier linearization 

      Wood, John; Bertran Albertí, Eduardo (2013-04)
      Article
      Accés obert
    • Slew-rate and efficiency trade-off in slow envelope tracking power amplifiers 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Vizarreta Paz, Pedro Pablo (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a study on the trade-off between the envelope's slew-rate and the drain efficiency when slower envelopes are considered to dynamically supply the power amplifier (PA). This paper discusses a method to ...
    • Telecomunicacions 

      Berenguer Sau, Jordi (Pòrtic-Enciclopèdia Catalana, 2013-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Telecomunicacions 

      Berenguer Sau, Jordi (Pòrtic-Enciclopèdia Catalana, 2012-01-31)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Advanced design features of Doherty power amplifiers 

      Bertran Albertí, Eduardo; Gilabert Pinal, Pere Lluís; Berenguer Sau, Jordi (Unión Científica Internacional de Radio, 2012)
      Text en actes de congrés
      Accés obert
      A Doherty power amplifier (DPA) is an effective structure born in 1936 which, after a scarce revival around year 2000), had been strengthened from 2005 because its capability to combine linear amplification with power ...
    • Hybrid envelope amplifier for envelope tracking power amplifier transmitters 

      Vizarreta Paz, Pedro Pablo; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents an envelope tracking (ET) Power Amplifier (PA) whose architecture includes an efficient Envelope Amplifier (EA) and a bandwidth reduction algorithm suitable for real time applications. The EA consists ...
    • Transmisor outphasing en UHF usando amplificadores clase E a GaN HEMT 

      Marante, Reinel; García, José Angel; Ruíz, Maria Nieves; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (Unión Científica Internacional de Radio, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A Chireix outphasing transmitter at UHF band is presented in this paper, based on class E RF power amplifiers. As recently proved in [1], properly transforming the load modulation path, imposed by the non-isolated ...
    • Envelope tracking amplification with reduced slew-rate and bandwidth envelopes 

      Vizarreta Paz, Pedro Pablo; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Berenguer Sau, Jordi; Gelonch Bosch, Antonio José; García, José Angel (Unión Científica Internacional de Radio, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents an Envelope Tracking Pow- er Amplifier whose architecture includes a Hybrid Envelope Amplifier (HEA) and an algorithm to adapt the envelope’s characteristics to the HEA’s limitations. The HEA attempts ...