Agilent/Keysight 11903B

The Keysight 11903B is a metrology-grade between-series adapter that transitions RF signals from 2.4 mm female to Type-N female connectors. Operating across DC to 18 GHz, it delivers the performance stability required for precision measurement, calibration, and system integration in high-frequency test environments.

– Technical Specifications

• Connector Configuration: 2.4 mm female input, Type-N female output
• Frequency Range: DC to 18 GHz
• Return Loss: > 28 dB
• Repeatability: −48 dB
• Electrical Length: 46.1 mm (1.85 in)
• Overall Length: 58.3 mm (2.30 in)
• Diameter: 15.7 mm (0.62 in)

– Key Features

The 11903B maintains return loss greater than 28 dB across its full frequency range, ensuring minimal signal reflection and high-fidelity measurements. Repeatability of −48 dB demonstrates exceptional mechanical stability for connector mating cycles—critical when adapters are used in production or laboratory calibration workflows. The compact form factor (58.3 mm overall length, 15.7 mm diameter) integrates easily into test fixtures and measurement systems without introducing unnecessary transmission line extension.

– Typical Applications

• RF and microwave signal routing in test and measurement systems
• Calibration accessory chains for network analyzers and impedance instruments
• Integration with slotless 2.4 mm coaxial adapters and waveguide transition equipment
• Production test fixtures requiring stable, low-loss between-series connectivity
• Telecommunications and radar measurement setups

– Compatibility & Integration

Designed for use with Keysight’s 2.4 mm coaxial to waveguide adapters and within-series adapter families, the 11903B is specified as a between-series connector solution. Its metrology-grade construction ensures compatibility with precision instrumentation and repeatable performance in demanding laboratory and manufacturing environments.