WR-90 Waveguide to SMA Female Adapter – X-Band 8.2–12.4 GHz

WR-90 to SMA Female Adapter for Professional X-Band Applications

This WR-90 waveguide to SMA female coaxial adapter is designed to ensure a stable, precise and low-loss transition across the 8.2–12.4 GHz range, covering the full X-Band. It is a professional QAXIAL solution ideal for advanced RF systems, radar applications, microwave telecommunications and laboratory measurement setups.

The SMA female interface, an industry standard up to 26.5 GHz, offers an excellent balance of RF performance, mechanical robustness and cost efficiency. The UBR-100 square flange ensures full mechanical compatibility with WR-90 waveguide interfaces, while the internal geometry is optimized to minimize insertion loss and maintain a low VSWR across the entire operating band.

Reliable RF Performance in X-Band

In the 8.2–12.4 GHz region, machining precision, internal alignment and connector stability are essential to ensure predictable and repeatable performance. Each QAXIAL WR-90 to SMA female adapter is manufactured using high-precision machining and strict dimensional controls, guaranteeing a stable and reliable waveguide–coaxial transition even in demanding or industrial environments.

These features make it an excellent choice for X-Band radar systems, microwave links, professional RF systems and laboratory measurements up to 12.4 GHz.

Main Features

• WR-90 / X-Band 8.2–12.4 GHz with optimized RF performance
• SMA female connector suitable up to 26.5 GHz
• UBR-100 square flange compliant with WR-90 standards
• Low insertion loss and low VSWR across the band
• High-precision mechanical construction with quality materials
• Compatible with RF systems, test instruments and industrial applications

Applications

• X-Band radar systems for surveillance, navigation and sensing
• Microwave telecommunications for point-to-point and backhaul links
• RF test benches with VNAs and instruments up to 12.4 GHz
• RF front-ends for WR-90 transmitter/receiver modules
• High-frequency industrial systems for diagnostics, control and automation
• Microwave R&D in laboratories and universities
• X-Band component characterization (antennas, filters, active modules, mixers)
• Integration in RF development and validation platforms

Designed for Long-Term Stability and Reliability

The combination of the SMA connector, WR-90/UBR-100 flange and precise mechanical construction ensures stable and repeatable RF performance over time, even under frequent connection cycles or variable environmental conditions. It is ideal for intensive test benches and continuous-operation RF systems.

Thanks to its build quality, compliance with X-Band standards and reliable RF behavior, the WR-90 to SMA female adapter is an excellent choice for system integrators, telecom companies, laboratories, research institutions and industrial users requiring professional waveguide components.

Dedicated Technical Support

For complex applications or specific integration needs, QAXIAL provides dedicated technical support. We assist in selecting the most suitable adapter and can evaluate custom configurations to ensure optimal performance in the user’s RF system.