Abstract

The accurate characterization of wireless channels is critical for optimizing communication performance, particularly in high-frequency bands such as millimeter-wave (mmWave) and sub-THz. Phased array antennas offer unique capabilities for spatially resolving multipath components and improving the efficiency of channel sounding. This paper explores advanced channel sounding techniques using phased array antennas, leveraging adaptive beamforming, angle-of-arrival estimation, and real-time beam scanning. We propose a novel method for high-resolution spatio-temporal channel characterization and evaluate its performance through simulations and real-world experiments. The findings demonstrate significant improvements in delay spread estimation, multipath detection, and angular resolution, making it a viable solution for next-generation wireless networks.