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Ara es mostren els items 36-55 de 109

    • Dataset reduction for neural network based digital predistorters under strong nonlinearities 

      López Bueno, David; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
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      The artificial neural networks (ANN) are gaining momentum in the digital predistorters (DPD) thanks to their inherently good approximation capabilities. Under strong or complex power amplifier nonlinearities, the size of ...

    • Design and digital predistortion linearization of a wideband outphasing amplifier supporting 200 MHz bandwidth 

      Gilabert Pinal, Pere Lluís; Vegas, David; Ren, Zhixiong; Montoro López, Gabriel; Pérez-Cisneros, José Ramón; Ruiz, Nieves; Si, Xiaoshu; García García, José Ángel (2020)
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      This paper presents a holistic approach to design and linearize a wideband outphasing power amplifier (PA) to efficiently amplify a 200 MHz bandwidth (BW) signal compliant with the Data Over Cable Service Interface ...

    • Digital linearization of wideband envelope tracking power amplifiers for mobile terminals 

      Li, Wantao; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (IEEE Microwave Theory and Techniques Society, 2023-01)
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      This article presents a low-complexity linearization method to compensate for multisource nonlinear distortion in wideband envelope tracking (ET) power amplifiers (PAs) for 5G new radio (NR) mobile terminals. The proposed ...

    • Digital predistorters go multidimensional: DPD for concurrent multiband envelope tracking and outphasing power amplifiers 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Vegas Garcia, Ángel; Ruiz Lavin, Maria de las Nieves; García García, José Ángel (2019-05-01)
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      Over at least the last two decades, digital predistortion (DPD) has become the most common and widespread solution to cope with the power amplifier's (PA's) inherent linearity-versus-efficiency tradeoff. When compared with ...

    • Digital predistortion linearization of a GaN HEMT push-pull power amplifier for cable applications with high fractional bandwidth 

      Gilabert Pinal, Pere Lluís; Pérez-Cisneros, José Ramón; Ren, Zhixiong; Montoro López, Gabriel; Ruiz Lavin, Maria de las Nieves; García García, José Ángel (2023-03-07)
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      This paper presents two linearization strategies for a custom-designed wideband push-pull (PP) power amplifier (PA) for wired communication applications such as, for example, cable TV. Two digital predistortion (DPD) ...

    • Digital predistortion of envelope tracking amplifiers driven by slew-rate limited envelopes 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Berenguer Sau, Jordi; Bertran Albertí, Eduardo (IEEE Microwave Theory and Techniques Society, 2011)
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      This paper presents a new Digital Predistorter (DPD) to compensate for nonlinear distortion that arises in Envelope Tracking (ET) Power Amplifiers (PAs) driven by slew-rate limited versions of the real signal's envelope. ...

    • Diseño de un linealizador adaptativo y analógico para amplificadores de potencia 

      Bertran Albertí, Eduardo; Zozaya, A; Montoro López, Gabriel; Berenguer Sau, Jordi (Congrega, 2003)
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    • Dynamic selection and estimation of the digital predistorter parameters for power amplifier linearization 

      Pham, Thi Quynh Anh; Montoro López, Gabriel; López Bueno, David; Gilabert Pinal, Pere Lluís (IEEE Microwave Theory and Techniques Society, 2019-07-03)
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      This paper presents a new technique that dynamically estimates and updates the coefficients of a digital predistorter (DPD) for power amplifier (PA) linearization. The proposed technique is dynamic in the sense of estimating, ...

    • 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 (Institute of Electrical and Electronics Engineers (IEEE), 2019)
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      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 ...

    • El transmisor sostenible 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bertran Albertí, Eduardo; Berenguer Sau, Jordi (2011-03-01)
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    • Envelope amplifier based on a hybrid series converter with the slow-envelope technique 

      Cheng, P. M.; Garcia, O.; Vasic, M.; Alou, P.; Oliver, J. A.; Montoro López, Gabriel; Cobos, J. A. (2012)
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      High frequency dc-dc switching converters are used as envelope amplifiers in RF transmitters. The dc-dc converter should operate at very high frequency to track an envelope in the MHz range to supply the power amplifier. ...

    • 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 ...

    • Examen final 

      Sales Zaragozá, Vicente; Montoro López, Gabriel (Universitat Politècnica de Catalunya, 2018-06-05)
      Examen
      Accés restringit a la comunitat UPC

    • Examen final 

      García Lozano, Mario; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Pérez Díaz de Cerio, David; Rodríguez Gómez, Alejandro Antonio; Spadaro, Salvatore; Tarrés Ruiz, Francisco (Universitat Politècnica de Catalunya, 2018-06-08)
      Examen
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    • Examen final 

      García Lozano, Mario; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Pérez Díaz de Cerio, David; Rodríguez Gómez, Alejandro Antonio; Spadaro, Salvatore; Tarrés Ruiz, Francisco (Universitat Politècnica de Catalunya, 2019-01-08)
      Examen
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    • Examen MQ 

      García Lozano, Mario; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Pérez Díaz de Cerio, David; Rodríguez Gómez, Alejandro Antonio; Spadaro, Salvatore; Tarrés Ruiz, Francisco (Universitat Politècnica de Catalunya, 2018-04-09)
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    • Examen MQ 

      García Lozano, Mario; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Pérez Díaz de Cerio, David; Rodríguez Gómez, Alejandro Antonio; Spadaro, Salvatore; Tarrés Ruiz, Francisco (Universitat Politècnica de Catalunya, 2018-11-07)
      Examen
      Accés restringit a la comunitat UPC

    • FPGA implementation of an LMS-based real-time adaptive predistorter for power amplifiers 

      Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Montoro López, Gabriel; Berenguer Sau, Jordi (2009)
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    • FPGA implementation of memory-based digital predistorters with high-level synthesis 

      Li, Wantao; Guillena Berenguer, Estefanía; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2021)
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      This paper presents a scalable look-up table (LUT) architecture for implementing digital predistortion (DPD) linearizers in a field programmable gate array (FPGA) by using the high-level synthesis (HLS) software. This ...

    • FPGA-based set-up for RF power amplifier dynamic Supply with real-time digital adaptive predistortion 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bertran Albertí, Eduardo; García García, José Angel (IEEE Press and Wiley, 2010)
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