• DocumentCode
    1378582
  • Title

    ΔΣ digitised polar transmitter with CMOS switching power amplifier

  • Author

    Paek, J.-S. ; Lee, H.-Y. ; Joo, T.H. ; Hong, Seong-Kwan

  • Author_Institution
    Sch. of Eng., Korea Advenced Institude of Sci. & Technol., Daejeon, South Korea
  • Volume
    46
  • Issue
    23
  • fYear
    2010
  • Firstpage
    1551
  • Lastpage
    1553
  • Abstract
    A delta-sigma (ΔΣ) digitised polar RF transmitter with a CMOS switching power amplifier is presented. The proposed power amplifier consists of a class-E amplifier with a modulating current source which allows high efficiency and high linearity. A current source is introduced in the proposed power amplifier to achieve ΔΣ digitised amplitude modulation. The current mode amplitude modulation is suitable for a high speed modulated signal such as an oversampled ΔΣ signal.
  • Keywords
    CMOS integrated circuits; amplitude modulation; delta-sigma modulation; power amplifiers; radio transmitters; CMOS switching power amplifier; class-E amplifier; current mode amplitude modulation; delta-sigma digitised polar RF transmitter; digitised amplitude modulation; high speed modulated signal; modulating current source; oversampled signal;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2010.2699
  • Filename
    5635398