In what might be the lowest power data transmission scheme ever, researchers at the University of Washington have sent data using the Johnson noise of a 50Ω resistor – or more accurately, the difference in Johnson noise between a 50Ω resistor and an open-circuit. One of the prototypes 5bit/s was sent over ~7.3m with a …
The post Passive wireless link transmits only Johnson noise to send data appeared first on Electronics Weekly .