Backscattering-based measurement of reactive antenna input impedance

    Research output: Contribution to journalArticleScientificpeer-review

    24 Citations (Scopus)

    Abstract

    A scattering technique for measuring reactive antenna input impedance is described. The antenna scattering is measured with three different loads: an open circuit, a conjugate match, and a reactive match. The load reactances tune the antenna into resonance at the measurement band. Theory and error considerations are presented, as well as measurement results of two ultra high frequency radio frequency identification antennas. The measurements were performed in a gigahertz transverse electromagnetic mode cell. The measured impedances are within about 10% of the simulated values for a dipole-like antenna. The results of a planar inverted-F antenna are somewhat more complex, but also supported by the presented simulations and the coaxial impedance measurement results.
    Original languageEnglish
    Pages (from-to)469 - 474
    Number of pages6
    JournalIEEE Transactions on Antennas and Propagation
    Volume56
    Issue number2
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Backscattering
    Antennas
    Scattering
    Radio frequency identification (RFID)
    Networks (circuits)

    Keywords

    • Antenna impedance
    • backscattering
    • radio frequency identification (RFID)
    • ultra high frequency (UHF)

    Cite this

    @article{8d34cf3d87c747f2baee2edcbcc2e1d7,
    title = "Backscattering-based measurement of reactive antenna input impedance",
    abstract = "A scattering technique for measuring reactive antenna input impedance is described. The antenna scattering is measured with three different loads: an open circuit, a conjugate match, and a reactive match. The load reactances tune the antenna into resonance at the measurement band. Theory and error considerations are presented, as well as measurement results of two ultra high frequency radio frequency identification antennas. The measurements were performed in a gigahertz transverse electromagnetic mode cell. The measured impedances are within about 10{\%} of the simulated values for a dipole-like antenna. The results of a planar inverted-F antenna are somewhat more complex, but also supported by the presented simulations and the coaxial impedance measurement results.",
    keywords = "Antenna impedance, backscattering, radio frequency identification (RFID), ultra high frequency (UHF)",
    author = "Pekka Pursula and Dan Sandstr{\"o}m and Kaarle Jaakkola",
    year = "2008",
    doi = "10.1109/TAP.2007.915425",
    language = "English",
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    issn = "0018-926X",
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    Backscattering-based measurement of reactive antenna input impedance. / Pursula, Pekka; Sandström, Dan; Jaakkola, Kaarle.

    In: IEEE Transactions on Antennas and Propagation, Vol. 56, No. 2, 2008, p. 469 - 474.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Backscattering-based measurement of reactive antenna input impedance

    AU - Pursula, Pekka

    AU - Sandström, Dan

    AU - Jaakkola, Kaarle

    PY - 2008

    Y1 - 2008

    N2 - A scattering technique for measuring reactive antenna input impedance is described. The antenna scattering is measured with three different loads: an open circuit, a conjugate match, and a reactive match. The load reactances tune the antenna into resonance at the measurement band. Theory and error considerations are presented, as well as measurement results of two ultra high frequency radio frequency identification antennas. The measurements were performed in a gigahertz transverse electromagnetic mode cell. The measured impedances are within about 10% of the simulated values for a dipole-like antenna. The results of a planar inverted-F antenna are somewhat more complex, but also supported by the presented simulations and the coaxial impedance measurement results.

    AB - A scattering technique for measuring reactive antenna input impedance is described. The antenna scattering is measured with three different loads: an open circuit, a conjugate match, and a reactive match. The load reactances tune the antenna into resonance at the measurement band. Theory and error considerations are presented, as well as measurement results of two ultra high frequency radio frequency identification antennas. The measurements were performed in a gigahertz transverse electromagnetic mode cell. The measured impedances are within about 10% of the simulated values for a dipole-like antenna. The results of a planar inverted-F antenna are somewhat more complex, but also supported by the presented simulations and the coaxial impedance measurement results.

    KW - Antenna impedance

    KW - backscattering

    KW - radio frequency identification (RFID)

    KW - ultra high frequency (UHF)

    U2 - 10.1109/TAP.2007.915425

    DO - 10.1109/TAP.2007.915425

    M3 - Article

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    JO - IEEE Transactions on Antennas and Propagation

    JF - IEEE Transactions on Antennas and Propagation

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