Re:Ask HN: Can you recommend a radiometer to measure phone r...
by Kelbit on Tuesday May 15, 2018 @11:04AM
(#17074450)
The consensus standard for this sort of test is IEEE 1528, and you are absolutely correct. The test uses a gel phantom (the standard provides a few formulations for different frequencies but most are a mixture of water, salt, sugar, and a thickener) and it is poked at with a sensitive probe to measure local temperature rise.
I’m guessing that SAR (specific absorption rate) is usually measured with a block of soggy flesh-imitating goo that’s set up as a calorimeter, though. You could look up how the FCC defines SAR, perhaps.