A wideband supply modulator for 20MHz RF bandwidth polar PAs in 65nm CMOS

R. Shrestha, R.A.R. van der Zee, A.J.M. de Graauw, B. Nauta

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    5 Citations (Scopus)
    116 Downloads (Pure)

    Abstract

    A wideband modulator for a 20MHz bandwidth polarmodulated PA is presented which achieves a maximumefficiency of 87.5% and a small signal -3dB bandwidth of285MHz. Realized in 65nm CMOS, it consists of a cascodednested Miller compensated linear amplifier and a class Dswitching amplifier. It can deliver 22.7dBm output power to a5.3Ω load. With a switching frequency of 118MHz, the outputswitching ripple is 4.3mVrms.Keywords: supply modulator, power amplifier, CMOS andcascoded nested Miller.
    Original languageEnglish
    Title of host publication2008 IEEE Symposium on VLSI Circuits
    Place of PublicationPiscataway
    PublisherIEEE
    Pages92-93
    Number of pages2
    ISBN (Electronic)978-1-4244-1805-3
    ISBN (Print)978-1-4244-1804-6
    DOIs
    Publication statusPublished - 19 Jun 2008
    Event2008 IEEE Symposium on VLSI Circuits, VLSIC 2008 - Honolulu, United States
    Duration: 19 Jun 200819 Jun 2008

    Conference

    Conference2008 IEEE Symposium on VLSI Circuits, VLSIC 2008
    Abbreviated titleVLSIC
    CountryUnited States
    CityHonolulu
    Period19/06/0819/06/08

    Keywords

    • Supply modulator
    • Power amplifier
    • CMOS and cascoded nested Miller

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  • Cite this

    Shrestha, R., van der Zee, R. A. R., de Graauw, A. J. M., & Nauta, B. (2008). A wideband supply modulator for 20MHz RF bandwidth polar PAs in 65nm CMOS. In 2008 IEEE Symposium on VLSI Circuits (pp. 92-93). Piscataway: IEEE. https://doi.org/10.1109/VLSIC.2008.4585964