Narda 319B

The Narda 319B is a coaxial RF attenuator engineered for high-power microwave applications in the 18–26.5 GHz band. Built on WR-62 waveguide architecture with UG-419/U flange interface, this unit delivers exceptional power handling and impedance control across its operating range.

– Technical Specifications

• Frequency Range: 18–26.5 GHz
• Waveguide Size: WR-62
• Flange Interface: UG-419/U
• Average Power Handling: 250 W
• Peak Power Handling: 160 W
• Maximum VSWR: 1.15
• Weight: 0.5 lbs (0.23 kg)
• Pressurization: Yes—enables enhanced peak power capacity

– Key Features

• Low VSWR (1.15 max) ensures minimal signal reflections and maintains system integrity across the 18–26.5 GHz band
• Pressurizable design accommodates demanding peak power requirements beyond standard atmospheric operation
• Compact form factor at 0.5 lbs facilitates integration into space-constrained systems
• WR-62 waveguide and UG-419/U flange provide direct compatibility with standard microwave test and production equipment

– Typical Applications

• High-power RF test and measurement systems in Ku-band and Ka-band frequencies
• Microwave source conditioning and protection circuits
• Power scaling and attenuation in production environments
• System integration requiring precise impedance matching and minimal signal distortion

– Compatibility & Integration

The 319B integrates directly into WR-62 waveguide systems via its standard UG-419/U flange. Its VSWR specification (1.15 max) ensures compatibility with both swept-frequency and fixed-frequency applications across 18–26.5 GHz. Pressurization capability extends operational flexibility for systems requiring transient power peaks beyond the 160 W specification.