Method of Power Recycling in CoAxial Mach-Zehnder Interferometers for Low Noise Measurements

Stephen Parker, Eugene Ivanov, Michael Tobar

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    We present the first experimental study of a newtype of power recycling microwave interferometer designed forlow noise measurements. This system enhances sensitivity tophase fluctuations in a device under test, independent of inputpower levels. The single sideband thermal white phase noisefloor of the system has been lowered by 8 dB (reaching −185dBc/Hz at 1 kHz offset frequency) at relatively low powerlevels (13 dBm).
    Original languageEnglish
    Pages (from-to)921-925
    JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    Volume56
    Issue number5
    DOIs
    Publication statusPublished - 2009

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