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RSSI measurement

Discussion in 'General Electronics Discussion' started by enrakeshkumar, Feb 15, 2016.

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  1. enrakeshkumar

    enrakeshkumar

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    Feb 15, 2016
    Hi,
    I have 2 tranceivers and i have to measure the rssi value at any one of those tranceivers.
    Please help me by providing any circuit to measure the Rssi value..or any other method to measure rssi value of the signal.


    Thanks in advance.
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009
    we cant do that until you supply a circuit of the receivers used in your system
    Many receiver chips have an RSSI output pin from which signal strength can be measured and or displayed on a meter


    Dave
     
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  3. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    RSSI has no fixed unit, it is an arbitrary value assigned to the relative strength of the received signal. If your receiver doesn't provide a built-in indication of received signal strength (which it may well have), it will not be easy to create such an indication by external means. You will have to tune a separate receiver to the same frequency your transceivers use and measure the received signal strength.
     
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  4. enrakeshkumar

    enrakeshkumar

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    Feb 15, 2016
    Actually one of my tranceiver is fixed and another is moving.
    Moving tranceiver has to send signal to fixed tranceiver then it has to transmit that signal again to the moving tranceiver.
    I need rssi value to deal with the distance between those tranceivers

    Help me out with any other ideas..
    Thank u.
     
  5. davenn

    davenn Moderator

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    Sep 5, 2009
    and that just makes the RSSI variable

    that cant be done with the info you have so far supplied as it is subject to so many variables
    and RSSI isn't going to tell you what you want anyway

    for the TX --- transmitter power, frequency, coax losses ( if any) antenna gain
    in between TX and RX ... obstructions etc

    for the RX --- receive antenna gain, coax losses ( if any), receiver front end gain, noise figure etc


    Dave
     
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