Antenna effective aperture measurement with backscattering modulation

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    A scattering measurement method for antenna characterization is described. The antenna backscattering is modulated by an oscillator circuit. The modulation begins, when a known RF power is transferred to the oscillator circuit from the antenna. This enables the measurement of the effective aperture of the antenna, from which the antenna bandwidth and radiation pattern are obtained. A theory for antenna aperture measurement is developed using a simple circuit model for the antenna-oscillator system. A dipole and a PIFA with a reactive input impedance at the application frequency were measured. The antenna aperture was measured to an accuracy of 9%, and the measurements complied with simulated and measured references. The method provides simple and accurate bandwidth and radiation pattern measurements with the reactive load the antenna is designed to work with.
    Original languageEnglish
    Pages (from-to)2836-2843
    JournalIEEE Transactions on Antennas and Propagation
    Issue number10
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed


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