The Agilent/Keysight 11921H is a precision coaxial adapter that bridges 1.0 mm and 1.85 mm connector formats for high-frequency RF and microwave measurements. Operating from DC to 67 GHz with 50 ohm impedance, it delivers insertion loss of 0.5 dB and return loss of 20 dB, making it suitable for network analyzer and spectrum analyzer applications requiring minimal signal degradation.
Technical Specifications
• Connector Configuration: 1.0 mm female to 1.85 mm male
• Frequency Range: DC to 67 GHz
• Characteristic Impedance: 50 ohms
• Insertion Loss: 0.5 dB
• Return Loss: 20 dB
• Maximum CW Power: 10 W
• Repeatability: −35 dB (1.0 mm connector), −40 dB (1.85 mm connector)
• Dielectric Construction: Air dielectric with low-loss plastic bead–supported center conductor
– Key Features
• Optimized for 110 GHz test systems and general-purpose adapter applications
• Low-loss air dielectric interface preserves signal integrity across the full frequency band
• High repeatability values ensure consistent, traceable measurements in precision test setups
• Handles 10 W CW power for both passive and active device characterization
– Typical Applications
• On-wafer device characterization and S-parameter measurement
• Coaxial test configurations requiring minimal adapter loss
• Network analyzer measurements in the 1 mm test system family
• Integration with Agilent 8510XF and similar high-frequency analyzers
– Compatibility & Integration
The 11921H connects directly into 1.0 mm female ports on test probes, on-wafer fixtures, and network analyzer test ports, while presenting a 1.85 mm male interface for coaxial cables and components. This adapter expands measurement flexibility within 110 GHz test systems without introducing significant impedance discontinuities or loss.
