• DocumentCode
    2870948
  • Title

    A 2W CMOS Hybrid Switching Amplitude Modulator for EDGE Polar Transmitters

  • Author

    Kwak, Tae-Woo ; Lee, Min-Chul ; Choi, Bae-Kun ; Le, Hanh-Phuc ; Cho, Gyu-Hyeong

  • Author_Institution
    KAIST, Daejeon
  • fYear
    2007
  • fDate
    11-15 Feb. 2007
  • Firstpage
    518
  • Lastpage
    619
  • Abstract
    An amplitude modulator for class-E2 EDGE polar transmitters is fabricated in a 0.35mum CMOS process. This hybrid switching modulator consists of a class-D amplifier with a 2MHz switching frequency and a wideband buffered analog amplifier having low output impedance of 200mOmega at high frequency. It can drive an RF PA with an equivalent impedance of 4Omega up to maximum output power of 2.25W with a maximum efficiency of 88.3%. The chip area is 4.7mm2.
  • Keywords
    CMOS integrated circuits; amplifiers; modulators; transmitters; 0.35 micron; 2 MHz; 2 W; 2.25 W; 200 mohm; 4 ohm; CMOS hybrid switching; amplitude modulator; class-D amplifier; class-E2 EDGE polar transmitters; equivalent impedance; hybrid switching modulator; wideband buffered analog amplifier; Amplitude modulation; Broadband amplifiers; CMOS process; Impedance; Power amplifiers; Power generation; Radio frequency; Radiofrequency amplifiers; Switching frequency; Transmitters;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
  • Conference_Location
    San Francisco, CA
  • ISSN
    0193-6530
  • Print_ISBN
    1-4244-0853-9
  • Electronic_ISBN
    0193-6530
  • Type

    conf

  • DOI
    10.1109/ISSCC.2007.373522
  • Filename
    4242493
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2870948