High speed link features uwb communications
CEA-Leti and Nokia Research Center have developed an rf front end circuit that allows very high data rate content exchange between a reader – typically a mobile phone – and a memory tag. The circuit – currently used in the Nokia Explore and Share research prototype first shown at Nokia World last year – supports a data rate of 112Mbit/s, described as a 'dramatic' improvement over traditional rfid systems.
According to the collaborators, the communication system uses Ultra Wide Band communications for data transfer and narrow band uhf, for synchronisation and remote powering.
The circuit also manages physical layer communication at both ends of the communication link, which means the device can be used either in a memory tag or in a reader. While the circuit can power itself from the narrow band signal and provide power for an external non volatile memory, a battery powered mode is included to increase the reading distance.
In demonstrations of the device, Nokia has shown a cd being downloaded in 10s.
