6G • RAN
Metamaterial Lens Collimators
Flat Gradient-Index (GRIN) Metamaterial Lens for 6G Wireless Backhaul
Flat engineered metasurface lens replacing bulky parabolic dish antennas to produce ultra-high-gain pencil beams for tower-to-tower backhaul.
Technical Explanation
Heavy, wind-vulnerable parabolic dish antennas are difficult to deploy on lightweight streetlamps and rooftop poles. Metamaterial Lens Collimators utilize a flat gradient-index (GRIN) metamaterial plate whose refractive index varies across its surface. Light as a flat panel, it transforms diverging sub-THz waves into a collimated high-gain (>35 dBi) pencil beam with zero spherical aberration, enabling multi-kilometer terabit wireless links between cell towers.
Key Functions
- Delivers >35 dBi antenna gain in a lightweight, flat-panel form factor
- Replaces heavy curved parabolic dish antennas on city rooftop poles
- Collimates sub-THz radio beams with zero geometric spherical aberration
- Withstands high urban wind loads while maintaining millimeter beam alignment
Specifications
IEEE Trans. Antennas and Propagation Metamaterial Lens, 3GPP Rel-19 Backhaul
Interfaces
Sub-THz Feed HornFlat Collimator Aperture
Related 6G Concepts
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