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LAUNCHXL-CC1352R1: Measurement of RSSI

Thomas Kunz
Prodigy 80 points
Part Number: LAUNCHXL-CC1352R1

Hey community,

I'm new in this forum and new in the field of microcontrollers and antennas so I apologize if this isnt an appropriate question.

I'm searching for information regarding the measurement of the RSSI value. I know how to access the RSSI value with my C-Code and I know that it represents the received power in dBm.

But how exactly is the internal measurement of the received signal strength accomplished? 

Are there schematics showing the internal structure of corresponding pins for a receiving of a Sub-1 Ghz signal (see Fig. 4-1 )? The only structural description I could find can be seen in the second picture. But it doesn't help for a decent understanding. 

 

Thanks in advance!

-Thomas

  • 0
    TI__Guru**** 317180 points

    We don't give out details of how this is implemented on the chip. 

  • 0 in reply to TER
    Prodigy 80 points

    Hi,

    thank you for your reply,

    I didn't want to know about the chip design, but more the concept behind the measurement. 

    For example, is the value of the RSSI coming from the measurement of the current and voltage at a known resistor at the antenna path?

    It would be really helpful for me if you could answer the question as I need this information to argue that the RSSI measurements are valid for my thesis results. 

    thank you

  • 0 in reply to Thomas Kunz
    TI__Guru**** 317180 points

    Why is the method behind how the RSSI is measured relevant? The RSSI dynamic range and accuracy is given in the datasheet and should give you enough information to argue that the RSSI results you are getting is valid.