Enviaments recents

  • A dual-band outphasing transmitter using broadband class E power amplifiers 

    Ruiz, Maria Nieves; Marante, Reinel; Rizo, Leysi; García, José Angel; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, a dual-band outphasing transmitter (able of operating either at 770 MHz or 960 MHz frequency bands) is presented. Two broadband RF power amplifiers (PAs) have been designed over packaged GaN HEMT devices, ...
  • A low-complexity memoryless model for envelope tracking RF power amplifiers 

    Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; García García, José Ángel; Ruiz Lavin, Maria de las nieves; Marante, Reinel (European Microwave Association (EuMA), 2014)
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    This paper presents a new kind of behavioral model structure for characterizing static nonlinearities in dynamically supplied RF power amplifiers. The proposed architecture is based on the combination of several basic cells ...
  • Control system of a miniature 12 MeV race-track microtron 

    Koubychine Merkulov, Youri Alexandrovich; Blasco Argente, Vicente Pablo; Romero, Juan Antonio; Sánchez, Alexandre; Montoro López, Gabriel; Shvedunov, Vasiliy (2014)
    Comunicació de congrés
    Accés obert
    A simple control system has been developed for the commissioning of a compact 12 MeV race-track microtron which is under construction at the Technical University of Catalonia. It is of modular structure and is based ...
  • Peak cancellation and digital predistortion of high-order QAM wideband signals for next generation wireless backhaul equipment 

    López Bueno, David; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bartzoudis, Nikolaos (2014)
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    This paper evaluates the linearity performance in a wideband wireless backhaul transmitter when applying crest factor reduction (CFR) and digital predistortion (DPD) techniques to enhance the transmitted output power, and ...
  • Slew-rate and efficiency trade-off in slow envelope tracking power amplifiers 

    Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Vizarreta Paz, Pedro Pablo (2012)
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    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 ...
  • Advanced design features of Doherty power amplifiers 

    Bertran Albertí, Eduardo; Gilabert Pinal, Pere Lluís; Berenguer Sau, Jordi (Unión Científica Internacional de Radio, 2012)
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    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)
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    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)
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    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)
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    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 ...
  • Comissioning of the decelerator test beam line in CTF3 

    Adli, E; Döbert, Steffan; Lillestol, R; Olvegaard, M; Syratchev, I; Carrillo, David; Toral, Fernando; Faus-Golfe, Angeles; García-Garrigos, JJ; Koubychine Merkulov, Youri Alexandrovich; Montoro López, Gabriel (2010)
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    The CLIC Test Facility (CTF3) at CERN was constructed by the CTF3 collaboration to study the feasibility of the concepts for a compact linear collider. The test beam line (TBL) recently added to the CTF3 machine was ...
  • Current status of the 12 MeV UPC race-track microtron 

    Koubychine Merkulov, Youri Alexandrovich; Berenguer Sau, Jordi; Crisol, A; Gonzalez, Xavier; Montoro López, Gabriel; Rigla Perez, Juan Pablo; Roure Fernández, Francisco; Carrillo, David; Garcia-Tabares, Luis; Toral, F; Lucas, J; Aloev, A.V.; Shvedunov, V.I. (2009)
    Comunicació de congrés
    Accés obert
    A com­pact race-track mi­crotron (RTM) with the max­i­mal out­put en­er­gy 12 MeV is under con­struc­tion at the Uni­ver­si­tat Politècnica de Catalun­ya (UPC) in col­lab­o­ra­tion with the Sko­belt­syn In­sti­tute of ...
  • RF and accelerating structure of 12 MeV UPC race-track microtron 

    Koubychine Merkulov, Youri Alexandrovich; Gonzalez, Xavier; Montoro López, Gabriel; Carrillo, David; Garcia-Tabares, Luis; Toral, Fernando; Mathot, Serge Jean; Shvedunov, V.I. (2012)
    Comunicació de congrés
    Accés obert
    We describe the design and technical characteristics of a C-band SW accelerating structure of a 12 MeV race-track microtron, which is under construction at the Technical University of Catalonia, and its RF system with a ...

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