High-Accuracy RF Amplitude Comparator

Alan D. Sokal

    Research output: Contribution to journalArticlepeer-review


    The linearity of an RF amplifier system employing envelope feedback depends crucially on the accuracy of the RF amplitude comparator. The accuracy of the comparator described-here is substantially insensitive to nonlinearities in the RF detector(s), unlike traditional comparators. This is because the two RF signal amplitudes are compared prior to, rather. than subsequent to, the potentially nonlinear detection process. The circuit is also substantially insensitive to the relative phase of the two RF signals.

    Original languageEnglish (US)
    Pages (from-to)703-706
    Number of pages4
    JournalIEEE Journal of Solid-State Circuits
    Issue number6
    StatePublished - Dec 1977

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering


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