Sub-THz Propagation for 6G: The W, D, and G Band Windows Explained
Why 6G uses sub-THz — and why only narrow windows work. Atmospheric absorption peaks at 60, 118, 183, 325, and 380 GHz make only W-band (75-110 GHz) and parts of D-band (110-170 GHz) practical for wireless. Visual guide with ITU-R data.