Variable Reference Structure for Channel Sounding in the Low Terahertz Range

In this paper, a structure is presented that can be used as a common reference for different channel sounding systems. The structure is designed to create a defined channel impulse response with two multipath components. The delay of the second multipath component can be varied due to a variable part of the structure. Initial measurements with a correlation-based time-domain channel sounder evaluate the functional behavior of the structure. The results illustrate the expected variation of the channel impulse response for horizontal polarization. However, additional multipath components appear in the channel impulse response, and the behavior for vertical polarization deviates from theoretical predictions.