THz Channel Sounding: Design and Validation of a High Performance Channel Sounder at 300 GHz

In this paper, a novel instrument-based time- domain THz channel sounder for the 300 GHz band is introduced. The performance is characterized by conducted measurements and verified by over-the- air measurements, which confirm the sensitivity and highlight the temporal resolution of the setup. Dynamic range, maximum measurable path loss and phase stability are evaluated. The results show that the performance in terms of dynamic range and maximum measurable path loss is, to the best knowledge of the authors, unprecedented in this frequency range.