D-Band

Technical Explanation

The D-band (110 GHz to 170 GHz, centered around 140-150 GHz) is widely regarded by 3GPP and ETSI as the 'sweet spot' for early 6G Sub-THz cellular access and backhaul. Situated between the 118 GHz oxygen resonance line and the 183 GHz water vapor absorption peak, the D-band offers an exceptionally clean atmospheric transmission window capable of supporting 20-50 GHz wide channels for terabit-per-second wireless data dumping.

Key Functions

• Prime atmospheric transmission window between 118 GHz oxygen and 183 GHz water peaks
• Channel bandwidths up to 20-30 GHz enabling peak data rates exceeding 100 Gbps
• High Doppler sensitivity providing millimeter-per-second velocity resolution for ISAC
• Active industrial prototyping by leading telecom vendors for 6G street kiosks and backhaul
• Standardized by ETSI ISG THz and 3GPP Release 19 Study Items