Agilent/Keysight 11921G

The Keysight 11921G is a precision coaxial adapter that connects 1.0 mm male connectors to 1.85 mm female connectors, enabling accurate RF and microwave measurements across DC to 67 GHz. This adapter serves as a critical interface component for engineers performing on-wafer and coaxial device characterization on 110 GHz 1 mm test systems.

– Technical Specifications

• Connector Configuration: 1.0 mm Male to 1.85 mm Female
• Frequency Range: DC to 67 GHz
• Impedance: 50 Ω
• Insertion Loss: 0.5 dB
• Return Loss: 20 dB
• Maximum CW Power: 10 W
• Repeatability: 1.0 mm connector at -35 dB; 1.85 mm connector at -40 dB

– Key Features

• Impedance matching optimized for 50 Ω systems across the full bandwidth
• Precision coaxial construction ensures minimal signal degradation and repeatable performance
• Low insertion loss of 0.5 dB maintains measurement fidelity
• High return loss specification of 20 dB reduces reflections and improves measurement accuracy
• Supports high-power operation up to 10 W CW

– Typical Applications

• On-wafer device characterization and verification
• Coaxial component measurement and calibration
• High-frequency RF and microwave test environments
• Device performance validation in millimeter-wave frequencies

– Compatibility & Integration

The 11921G integrates directly with 110 GHz 1 mm test systems, bridging measurement platforms that require transition between connector families. Its design accommodates both on-wafer probing configurations and traditional coaxial measurement setups without compromising signal integrity.