Agilent/Keysight 11904B

The Agilent/Keysight 11904B is a metrology-grade RF adapter that interconnects 2.4 mm and 2.92 mm connectors for precision high-frequency measurement systems. Operating from DC to 40 GHz, this adapter delivers >24 dB return loss and -40 dB repeatability, ensuring signal integrity across demanding RF and microwave test environments.

– Technical Specifications

• Connector Interface: 2.4 mm female to 2.92 mm female
• Frequency Range: DC to 40 GHz
• Return Loss: >24 dB
• Repeatability: -40 dB
• Electrical Length: 11.3 mm (0.45 in)
• Overall Mechanical Length: 16.3 mm (0.64 in)
• Diameter: 8.0 mm (0.31 in)
• Impedance: 50 Ω
• Grade: Metrology grade

– Key Features

• Metrology-grade construction for precision interconnection across the DC to 40 GHz band
• High return loss specification (>24 dB) minimizes reflections and measurement errors
• Excellent repeatability at -40 dB supports accurate, repeatable measurements
• Compact form factor: 16.3 mm length and 8.0 mm diameter fits tight test setups
• Female-to-female configuration enables cascade connection with compatible test instruments

– Typical Applications

• Radar and satellite system characterization
• Wireless communications testing
• Microwave backhaul measurement
• General RF and microwave metrology in production and laboratory environments
• Component and subsystem validation in development testing

– Compatibility & Integration

The 2.4 mm connector supports operation to 50 GHz with enhanced mechanical robustness compared to SMA and 2.92 mm designs, providing thicker outer walls and strengthened female contacts. The 2.92 mm connector mates with SMA and 3.5 mm connectors and is rated to 40 GHz. Both connectors integrate readily into existing RF test benches requiring precision adapters for multi-connector environments.