The following question was posted on element-14.
Michael asked: “Hi Sir, I would like to design a project that functions depending on the signal strength of a RF signal. I read about received signal strength indicator, and somehow I think this is useful info. The concept of the project is to vary the output (e.g. a transducer) depending on the signal strength of an oncoming transmitter. What IC can i use? Thanks ”
Chris Pinter responded: ”
Hello Michael, There are many ic’s that can do this for you. What you want to measure is “Receiver signal strength indicator” or RSSI. Most IC’s have this available as a register in the IC and can be accessed through a firmware command.
I should mention that RSSI is not a very accurate measurement. Environmental noise and distance between the receiver and transmitter will affect the RSSI reading. So if you want to use it as a precision measurement RSSI is not the best choose.
Here are a number of manufactures that provide RSSI with their IC.
If you need more help with wireless development check this out.