[hornej]

Power consumption for radar can get down to around 0.5mW (edit)

But I imagine for 60GHz WiFi it's probably pretty power hungry.

At this point there's not much noise in the mmWave spectrum (it won't be competing with 2.4GHz and 5GHz anyways). And mmWave doesn't travel that far which is one of the main reasons the FCC unlicensed it in the first place.

Might be worth keeping an eye on UWB for AR/VR headsets https://www.embedded.com/wireless-transceivers-use-uwb-for-l...

[BenjiWiebe]

Checking some point to point wireless radios and it doesn't look like 60Ghz needs much more power. Well, it might be a few times as much, but definitely the same order of magnitude.