The Agilent/Keysight 11921E is a precision coaxial adapter that bridges 1.0 mm and 1.85 mm connector systems for RF and microwave measurements. Operating from DC to 67 GHz, this 50 Ω adapter enables seamless transitions between different coaxial interfaces while maintaining critical electrical performance in high-frequency test environments.
Technical Specifications
Frequency Range: DC to 67 GHz
Impedance: 50 Ω
Insertion Loss: 0.5 dB
Return Loss: 20 dB
Maximum CW Power: 10 W
Connector Configuration: 1.0 mm (male) to 1.85 mm (male)
Repeatability:
• 1.0 mm connector: −35 dB
• 1.85 mm connector: −40 dB
– Key Features
Low insertion loss of 0.5 dB minimizes signal attenuation across the full frequency band. Return loss of 20 dB provides controlled impedance matching for accurate S-parameter and power measurements. The adapter handles up to 10 W continuous power, suitable for both small-signal and moderate-power test applications. High repeatability values ensure consistent connector mating performance across multiple engagement cycles.
– Typical Applications
The 11921E serves on-wafer device characterization and coaxial measurement scenarios where direct 1.0 mm-to-1.85 mm conversion is required. It is particularly useful in automated test environments demanding reliable, repeatable transitions without external calibration.
– Compatibility & Integration
Designed for 110 GHz 1 mm test systems, the adapter integrates with measurement platforms using either 1.0 mm or 1.85 mm probe and cable assemblies. Its male-to-male configuration supports chaining with additional adapters or direct connection to test ports on network analyzers and signal sources.
