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Automatic Optimization of Input Split and Bias Voltage in Digitally Controlled Dual-Input Doherty RF PAs

Author

Listed:
  • Mattia Mengozzi

    (Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi“, University of Bologna, 40136 Bologna, Italy)

  • Gian Piero Gibiino

    (Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi“, University of Bologna, 40136 Bologna, Italy)

  • Alberto Maria Angelotti

    (Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi“, University of Bologna, 40136 Bologna, Italy)

  • Alberto Santarelli

    (Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi“, University of Bologna, 40136 Bologna, Italy)

  • Corrado Florian

    (Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi“, University of Bologna, 40136 Bologna, Italy)

  • Paolo Colantonio

    (Department of Electronic Engineering, University of Roma Tor Vergata, 00133 Rome, Italy)

Abstract

Digitally controlled Dual-Input Doherty Power Amplifiers (DIDPAs) are becoming increasingly popular due to the flexible input signal splitting between the main and auxiliary stages. Nevertheless, the presence of many degrees of freedom, e.g., input amplitude split and phase displacement as well as biasing for multiple stages, often involves inefficient trial-and-error procedures to reach a suitable PA performance. This article presents automated parameter setting based on coordinate descent or Bayesian optimizations, demonstrating an improvement in the performance in terms of RF output power and power-added efficiency (PAE) in the presence of broadband-modulated signals, yet maintaining suitable linear behavior for, e.g., communications applications.

Suggested Citation

  • Mattia Mengozzi & Gian Piero Gibiino & Alberto Maria Angelotti & Alberto Santarelli & Corrado Florian & Paolo Colantonio, 2022. "Automatic Optimization of Input Split and Bias Voltage in Digitally Controlled Dual-Input Doherty RF PAs," Energies, MDPI, vol. 15(13), pages 1-16, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:13:p:4892-:d:855432
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    References listed on IDEAS

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    1. Markus Hartikainen & Kaisa Miettinen & Margaret Wiecek, 2012. "PAINT: Pareto front interpolation for nonlinear multiobjective optimization," Computational Optimization and Applications, Springer, vol. 52(3), pages 845-867, July.
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    Cited by:

    1. Yu Zhang & Chunyu Hu & Xia Liu & Jun Wang & Wenxu Zhong & Ping Tian & Shuai Lin & Weimin Shi, 2023. "Development Review of Broadband and Multi-Band Outphasing Power Amplifiers for High-Efficiency Amplification," Energies, MDPI, vol. 17(1), pages 1-14, December.

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