Adaptive impedance matching and antenna tuning for green software-defined and cognitive radio

Y. Sun, J. Moritz, X. Zhu

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    27 Citations (Scopus)

    Abstract

    Impedance matching between the power amplifier and antenna is crucial for efficient power transfer in a green transmitter. A single antenna with a software-configurable tuning unit can serve the functions of multiple antennas which are otherwise required by multistandard wireless communications. Impedance matching and tuning must be adaptive and in real time for fast varying frequencies and surroundings of mobile communications. Small size and low power consumption must also be met in such tuning systems for mobile phones and terminals. This paper overviews automatic antenna tuning for modern and future generation mobile communications. Recent advances in impedance monitoring methods, fast tuning algorithms and programmable matching systems are discussed. Latest effort in integrating automatic impedance tuning systems on a silicon chip is also introduced.
    Original languageEnglish
    Title of host publicationMidwest Symposium on Circuits and Systems
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages1-4
    Number of pages4
    Volume12269556
    Edition1st
    ISBN (Electronic)978-1-61284-855-6
    ISBN (Print)978-1-61284-856-3
    DOIs
    Publication statusPublished - 1 Jan 2011
    Event2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS) - Korea, China
    Duration: 7 Aug 201110 Aug 2011

    Conference

    Conference2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS)
    Country/TerritoryChina
    CityKorea
    Period7/08/1110/08/11

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