Fast electromagnetic field strength probes

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    Abstract

    Diode detectors and thermocouple detectors are conventionally used to measure electromagnetic field strength. Both detectors have some disadvantages for applications where a fast response and a high dynamic range is required. The diode detector is limited in dynamic range. The dynamic range is important when considering modern pulsed wireless systems with a high peak-average ratio. The thermocouple is too slow to measure fast changing fields, such as the ones created by pulsemodulated wireless systems, modern radars, and in reverberation chambers under fast mode-stirring operation. Mobile devices can dynamically measure and control their output power using a logarithmic amplifier. Circuits with a frequency range up to 10 GHz, a dynamic range of more than 80 dB and response time less than 50 ns are available. Three orthogonal monopole antennas connected to three logarithmic amplifiers result in a in-house, fast, broadband and high dynamic range field strength probe. The concept is described and simulation results are shown. Prototype probes have been built.
    Original languageUndefined
    Title of host publicationProceedings of the 2013 International Symposium on Electromagnetic Compatibility (EMC Europe)
    Place of PublicationUSA
    PublisherIEEE Electromagnetic Compatibility Society
    Pages99-103
    Number of pages5
    ISBN (Print)978-1-4673-4979-6
    Publication statusPublished - 4 Sep 2013
    EventEMC Europe 2013: International Symposium on Electromagnetic Compatibility - Brugge, Belgium
    Duration: 2 Sep 20136 Sep 2013

    Publication series

    Name
    PublisherIEEE Electromagnetic Compatibility Society

    Conference

    ConferenceEMC Europe 2013
    CountryBelgium
    CityBrugge
    Period2/09/136/09/13

    Keywords

    • Sensors
    • Electromagnetic field strength probes
    • METIS-297817
    • IR-87168
    • EWI-23657

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