Agilent/Keysight 11921F

The Keysight 11921F is a precision coaxial adapter that connects 1.0 mm female and 1.85 mm female connectors for high-frequency RF measurements. It extends measurement capability to 67 GHz across 50 Ω systems, delivering the electrical performance required for on-wafer probing and component characterization in 110 GHz test environments.

– Technical Specifications

• Frequency Range: DC to 67 GHz
• Impedance: 50 Ω
• Insertion Loss: 0.5 dB (typical)
• Return Loss: 20 dB (typical)
• Maximum CW Power: 10 W
• Repeatability: −35 dB (1.0 mm connector), −40 dB (1.85 mm connector)

– Key Features

• Precision coax-to-coax design minimizes measurement uncertainty in high-frequency applications. The adapter achieves −35 dB repeatability at the 1.0 mm port and −40 dB at the 1.85 mm port, supporting reproducible on-wafer and coaxial measurements. Low insertion loss (0.5 dB typical) and strong return loss (20 dB typical) preserve signal integrity across the full frequency range. Rated for 10 W continuous power operation, it handles standard RF power levels without degradation.

– Typical Applications

• Component measurement in 110 GHz 1 mm test systems
• On-wafer probing and characterization
• Coaxial device testing requiring 50 Ω impedance
• High-frequency adapter extensions for precision measurement systems

– Compatibility & Integration

The 11921F interfaces directly with equipment and components using 1.0 mm and 1.85 mm coaxial connectors. It is designed specifically for integration into 110 GHz 1 mm test systems where connector transition accuracy is critical to measurement performance.