Constellation diagram of a 56 Gbit/s QPSK signal
Constellation diagram of a 56 Gbit/s QPSK signal, transmitted over a distance of 1 m.

Transmission experiments with the TERAPAN modules of the first generation were performed at the University of Stuttgart for various modulation formats and symbol rates. The transmission distance was up to 2 meters. Date rates in the order of 60 Gbit/s were achieved for lower order modulation schemes.

Currently, the project team of investigates how the data rates can be increased by employing higher order modulation schemes.

Quantity Symbol Value
Transmit power PT -7 dBm
Carrier frequency fc 300 GHz
Wavelength λc 1 mm
Distance d 1 m
Free space path loss FSPL ~80 dB
Antenna gain GA ~25 dBi