Wireless link could match fibre data rates
Researchers from the Fraunhofer Institute for Applied Solid State Physics and the Karlsruhe Institute for Technology have transmitted data wirelessly at 40Gbit/s over a distance of 1km using a carrier frequency of 240GHz.
The demonstration is said to set a new world record and match the capacity of optical fibre transmission. This, the researchers suggest, may allow such radio links to supplement the broadband network in rural areas.
The transmitter and receiver chip, which measures 4 x 1.5mm, features high carrier mobility (HEMT)transistors. This, says the team, makes it possible to use frequencies between 200 and 280GHz using active transmitters and receivers in the form of compact integrated circuits.
