Re:New Chip Brings Ultra-Low Power Wi-Fi Connectivity to IoT...
by beambot on Wednesday February 26, 2020 @08:29PM
(#22429480)
It's backscatter tech, which was literally invented for surveillance (see Great Seal Bug [0]) -- modern(ish) versions of which are prominently featured in the NSA's ANT Catalog [1].
This is the same technology as UHF RFID (now Rain RFID).
Using dedicated RF carriers rather than ambient WiFi signals, we've demonstrated 100Mbps at 10uW using QAM Backscatter signalling [2]. Similar tech was used to read neural data off of dragonflies in flight [3] or self-contained implantable devices [4].
This is the same technology as UHF RFID (now Rain RFID). Using dedicated RF carriers rather than ambient WiFi signals, we've demonstrated 100Mbps at 10uW using QAM Backscatter signalling [2]. Similar tech was used to read neural data off of dragonflies in flight [3] or self-contained implantable devices [4].
[0] https://en.wikipedia.org/wiki/The_Thing_(listening_device)
[1] https://en.wikipedia.org/wiki/NSA_ANT_catalog
[2] http://people.ee.duke.edu/~sjt/publications/pdf/2013_Thomas_...
[3] https://www.wired.com/2013/06/dragonfly-backpack-neuron/
[4] http://www.travisdeyle.com/publications/pdf/2017_rfic_implan...