HF radio systems and techniques announcement

Ben A. Witvliet, Mark J. Bentum

    Research output: Contribution to journalArticleAcademicpeer-review


    Up to the 1960's most telecommunication between the continents was realized by large HF (3 to 30MHz) radio systems especially built for that purpose, using the ionosphere as a natural high altitude 'reflector'. Inventions such as adaptive beamforming, antenna diversity, and frequency diversity stem from the 1930's, an impressive achievement considering the technology of that time.
    Original languageEnglish
    Pages (from-to)146-147
    Number of pages2
    JournalIEEE antennas and propagation magazine
    Issue number6
    Publication statusPublished - 2015


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