Wideband Efficient Amplifiers for On-Chip Adaptive Power Management Applications

  • Lázaro Marco
  • Vahid Yousefzadeh
  • Albert García-Tormo
  • Alberto Poveda
  • Dragan Maksimović
  • Eduard Alarcón


This chapter provides a review of system-level and circuit-level implementation aspects of strategic adaptive power management techniques which require wideband efficient power amplification, and that are crucial for power demanding loads in portable devices, such as envelope tracking for polar RF power transmitters, and on-chip line drivers for power line communications. The stringent specifications of such amplifiers pose relevant challenges both to assess the system-level impact of the amplifier limitations, as well as to design the power converter both in terms of converter topology and control. A discussion on advanced topologies aiming miniaturization and wideband low-distortion operation, both multi-level conversion and linear-assisted scheme, is presented. Details of advanced modulation and control methods are shown, namely low-oversampling ratio sigma-delta modulation with high-order filter, and digital predistortion of output filter dynamics built-in in PWM modulation.


Switching Frequency Power Converter Design Space Exploration Buck Converter Switching Loss 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Lázaro Marco
  • Vahid Yousefzadeh
  • Albert García-Tormo
  • Alberto Poveda
  • Dragan Maksimović
  • Eduard Alarcón
    • 1
  1. 1.Technical University of CatalunyaBarcelonaSpain

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