Ubiquiti AF-5G23-S45-US airFiber Wireless Bridge

Ubiquiti AF-5G23-S45-US Wireless Bridge Antenna

Overview

The Ubiquiti AF-5G23-S45-US is a directional antenna designed for the airFiber wireless bridge platform, enabling long-distance point-to-point connectivity in licensed 5 GHz bands. This model delivers focused RF energy across extended distances, making it suitable for infrastructure deployments where traditional fiber routing is impractical or cost-prohibitive. Manufactured in China and weighing 11.35 pounds, the AF-5G23-S45-US integrates with Ubiquiti's airFiber ecosystem to support high-capacity backhaul and bridging applications.

Key Features

The directional form factor concentrates signal in a defined coverage pattern, reducing multipath interference and improving link reliability over long distances. As part of the Ubiquiti airFiber Antennas product family, the AF-5G23-S45-US maintains compatibility with airFiber radio units, allowing integrators to configure dual-polarization and MIMO architectures. The antenna's mechanical design facilitates both tower and wall mounting, with standard U-bolt provisions for secure installation on structural mounts.

Deployment Scenarios

This antenna supports campus interconnection, remote site backhaul, and licensed spectrum point-to-point links. Organizations bridging geographically separated facilities—data centers, branch offices, or distributed networks—benefit from the AF-5G23-S45-US's gain characteristics and directional rejection of off-axis interference. The model is well-suited for deployments requiring multi-gigabit throughput without reliance on carrier fiber or leased circuits.

Network Integration

Pair the AF-5G23-S45-US with compatible airFiber radio modules to establish licensed 5 GHz wireless links. Proper azimuth and elevation alignment is critical; use professional RF survey tools and link budget calculations during site design. The antenna's specifications should be factored into fade margin analysis, particularly for links exceeding 10 km or traversing variable terrain.

Installation Notes

Mount the 11.35 lb antenna on structures rated for combined wind and ice loads. Ensure clear line-of-sight between endpoints and minimize nearby obstruction within the antenna's main lobe. Cable runs should use low-loss connectors and shielded jumpers to maintain system performance. Professional installation and RF verification are recommended before activating production links.

Marty Allison, Infrastructure Architect

"The AF-5G23-S45-US works exceptionally well for licensed band deployments where you need reliable, high-capacity backhaul without the cost and complexity of fiber. I've used this antenna across hundreds of campus links and remote bridging projects. The directional gain helps isolate your link from neighboring systems, which matters in congested spectrum bands. Key takeaway: invest time in proper site surveys and alignment—this antenna rewards precision. The Ubiquiti AF-5G23-S45-US is production-proven infrastructure, and paired with disciplined RF engineering, it delivers consistent uptime."