Agilent/Keysight E281ES

The Keysight E281ES is an in-line coaxial-to-waveguide adapter that bridges ruggedized 1.0 mm coaxial connectors to WR-12 waveguide devices across the E-band spectrum. Operating from 60 GHz to 90 GHz, this metrology-grade adapter delivers consistent return loss performance of 20 dB typical (≥16 dB minimum) and insertion loss of 0.5 dB typical (≤0.7 dB maximum), enabling high-accuracy RF measurements and precise device interconnection.

– Technical Specifications

• Frequency Range: 60 GHz to 90 GHz
• Return Loss: ≥16 dB (20 dB typical)
• Insertion Loss: ≤0.7 dB (0.5 dB typical)
• Coaxial Interface: Ruggedized 1.0 mm (female)
• Waveguide Interface: WR-12

– Key Features

• Metrology-grade waveguide port with anti-cocking ring for repeatable, aligned connections
• Precision alignment holes above and below the broad wall enable direct engagement with calibration standards
• Ruggedized coaxial connector design enhances mechanical durability in field and lab environments
• In-line configuration simplifies system integration without requiring external mounting hardware

– Typical Applications

• E-band RF test and measurement systems
• Component characterization and calibration procedures
• Research and development signal chain validation
• Manufacturing test fixtures requiring coaxial-to-waveguide transitions

– Compatibility & Integration

The E281ES mates with instruments equipped with ruggedized 1.0 mm male connectors and terminates into standard WR-12 waveguide ports. Its metrology-grade construction and precision alignment features support VNA and power meter integration across the 60 GHz to 90 GHz band.