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Sub-Terahertz Channel Characterization in a Lecture Room from Measurements with Phase Drift by a Rotating Horn Antenna
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- Authors
- Kyung-Won Kim, Myung-Don Kim, Jae-Joon Park, Juyul Lee, Heon-Kook Kwon
- Issue Date
- 2025-02
- Citation
- IEEE Transactions on Antennas and Propagation, v.73, no.2, pp.1110-1124
- ISSN
- 0018-926X
- Publisher
- Institute of Electrical and Electronics Engineers
- Language
- English
- Type
- Journal Article
- Abstract
- As the frequency bands for mobile communication increase, the study of the spatial characteristics of wireless channel for beamforming becomes increasingly important. To overcome high path loss and achieve high angular resolution, a method of measuring channels by rotating a directional antenna is widely used in wireless channel study. However, this method is vulnerable to phase drift. This article reports the severity of phase drift in a rotating antenna system in the sub-terahertz (THz) band through measurement and analysis results. This article also introduces a method for estimating multipath components (MPCs) from data affected by phase drift due to antenna rotation, and presents the results of channel characterization in a lecture room at a frequency band of 159 GHz using the proposed method.
- KSP Keywords
- Directional Antenna, Horn Antenna, Measurement and analysis, Path loss, Spatial characteristics, Wireless Channel, channel characterization, distributed antenna systems(DAS), frequency band, high angular resolution, measuring channel