The Ubiquiti airFiber X AF-5G23-S45 is a high-performance 5 GHz MIMO antenna designed for long-range Point-to-Point (PtP) wireless links and carrier backhaul deployments. Featuring a 23 dBi gain and a specialized slant 45° polarization, it significantly improves interference avoidance in crowded RF environments. Its 2×2 dual-linear (MIMO) polarization supports robust wireless throughput and noise isolation when paired with airFiber X radios.

Engineered for durable outdoor operation, this antenna comes with weatherproof RF connectors and a solid mechanical structure designed to endure wind speeds up to 200 km/h (125 mph). The universal pole mount accommodates poles from 38 to 64 mm diameter, providing flexible installation options such as tower-to-tower or building-to-building bridges.

The compact dimensions (378 × 378 × 290 mm) and lightweight design (3.4 kg including mount) make it ideal for various backhaul scenarios. It operates across the 5.1–5.9 GHz frequency band, maintaining a maximum VSWR of 1.5:1, and complies with ETSI EN 302 326 DN2 standards while being NDAA compliant.

Additional resources such as antenna data files and technical documentation are available from Ubiquiti support portals. This antenna is compatible with airFiber X radios and certain connectors for LTU/Rocket style radios supporting MIMO antennas.