300 GHz Channel Characterization of Chip-to-Chip Communication in Metal Enclosure

This paper presents the characterization of Terahertz (THz) wireless channel inside a desktop size metal box with focus on line-of-sight (LoS) and reflected-non-line-of-sight (RNloS) propagation. Measurements for LoS propagation inside the metal box show that path loss varies with respect to the transceiver’s height from the bottom wall, and for some heights, the path loss is lower than the free space value. By analyzing the relationship between the path loss and the antenna’s height, the results show that the first six modes of TE mode dominate the resonating modes inside the box. Also, the path loss analysis indicates that the resonating modes combined with the reflections happened inside the box should be responsible for the strong ripples on the path loss curve. Finally, the RNLoS measurements with dual-in-line-memory-module (DIMM) as the reflecting surface show that the differences between the average path losses measured inside the metal box and in free space are limited to 1 dB.