Measuring the isolation of the circularly polarized characteristic waves in NVIS propagation

Ben A. Witvliet, Erik van Maanen, George J. Petersen, Albert J. Westenberg, Mark J. Bentum, Cornelis H. Slump, Roel Schiphorst

    Research output: Contribution to journalArticleAcademicpeer-review

    10 Citations (Scopus)

    Abstract

    Separate excitation of the characteristic waves in the ionosphere results in two orthogonal propagation channels on the same frequency, which may be used in diversity and multiple-input, multiple-output (MIMO) systems. In this article, a method to measure the isolation between these paths is proposed and demonstrated in a near vertical incidence skywave (NVIS) experiment at a frequency of 7 MHz over a 105-km distance. Characteristic wave isolation exceeding 25 dB is measured during "Happy Hour": the interval when the propagation path just opens or closes and only the extraordinary wave propagates.
    Original languageEnglish
    Pages (from-to)120-145
    Number of pages26
    JournalIEEE antennas and propagation magazine
    Volume57
    Issue number3
    DOIs
    Publication statusPublished - Jun 2015

    Keywords

    • EWI-26669
    • IR-98994
    • METIS-315147

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