What’s next after 5G? 6G at THz frequencies

November 06, 2019 //By Julien Happich
THz frequencies
While the new 5G technology is at the first stages of rollout, Rohde & Schwarz, the Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI and the Fraunhofer Institute for Applied Solid State Physics IAF are taking a step further with demonstrations in the terahertz (THz) frequency band, related to the 6th generation wireless mobile communication (6G).

The collaboration has resulted in a wireless transmit and receive system operating between 270 and 320GHz, with further frequency extensions for potential 6G bands already in preparation.

6G research is already underway in industry and academia. While 5G introduces mmWave frequencies with wider bandwidths for higher data rates and enables new applications in wireless factory automation (Industrial IoT) and for autonomous vehicles, the aim of 6G is to push the boundaries of transmission bandwidths even higher.

Although it is not clear yet which technologies 6G will entail, it is already apparent that frequency bandwidths need to be further increased to enable terabit class data rates. Wide contiguous frequency blocks can only be found at sub-THz and THz bands, i.e. in the frequency range above 100 GHz. The utilization of THz frequencies for 6G is estimated to become commercial in the next 8 to 10 years. But Rohde & Schwarz has already presented a demonstrator setup for 300 GHz to customers. The system was also displayed at the EuMW2019 in Paris as part of a workshop on mmWave and THz Wireless Communication, where it consisted of 300 GHz transceiver frontends, the R&S SMW200A vector signal generator and R&S FSW43 signal and spectrum analyzer as well as of units for synchronization of transmitter and receiver.


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