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  2. RF probe - Wikipedia

    en.wikipedia.org/wiki/RF_probe

    In this situation, a simple probe type sometimes called an RF detector can be used to convert the RF signal to DC. Such device will work as a RF rectifier and give a pulsed DC voltage. [2] The second kind of difficulty arises when RF energy has to be measured in a circuit which is sensitive to small changes in its electrical environment.

  3. Nonlinear junction detector - Wikipedia

    en.wikipedia.org/wiki/Nonlinear_junction_detector

    A bumblebee with a transponder acting as a non-linear junction for tracking the animal by way of harmonic radar.. The non-linear junction detector, or an NLJD, is a device that illuminates a small region of space with high-frequency RF energy.

  4. Envelope detector - Wikipedia

    en.wikipedia.org/wiki/Envelope_detector

    An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency signal as input and outputs the envelope of the original signal. Diode detector

  5. Direction finding - Wikipedia

    en.wikipedia.org/wiki/Direction_finding

    The Royal Navy also deployed direction finding equipment on ships tasked to anti-submarine warfare in order to try to locate German submarines, e.g. Captain class frigates were fitted with a medium frequency direction finding antenna (MF/DF) (the antenna was fitted in front of the bridge) and high frequency direction finding (HF/DF, "Huffduff ...

  6. The Best Radio Frequency Detectors to Buy Right Now - AOL

    www.aol.com/news/best-radio-frequency-detectors...

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  7. Lightning detector - Wikipedia

    en.wikipedia.org/wiki/Lightning_detector

    Enhanced Intracloud Lightning Detection: The addition of an optical sensor and coincidence circuit not only eliminates false alarms caused by RF noise; it also allows the RF sensor to be operated at higher sensitivity and to sense higher frequencies characteristic of IC lightning and enable the weaker high frequency components of IC signals and ...

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