Agilent/Keysight J281A

The Agilent/Keysight J281A is a coaxial-to-waveguide adapter that converts G and J band waveguide transmission lines to 50-ohm coaxial format. Operating across 5.3 to 8.2 GHz, it delivers low-loss bidirectional power transmission with a VSWR below 1.3, minimizing reflections in RF and microwave systems requiring waveguide-to-coaxial interconversion.

– Technical Specifications

• Frequency Range: 5.3 GHz to 8.2 GHz
• Waveguide Band: G and J band
• VSWR: Less than 1.3
• Coaxial Connector: Type-N female
• Characteristic Impedance: 50 ohms (coaxial side)
• Signal Direction: Bidirectional power transmission

– Key Features

• Low VSWR design ensures minimal signal reflection across the operating band
• Supports both forward and reverse power flow
• Matches standard Type-N male connectors on coaxial equipment
• Compact adapter form factor for waveguide system integration

– Typical Applications

• Interconnecting waveguide antennas to coaxial-based RF instrumentation
• Microwave measurement systems requiring waveguide-to-coaxial transitions
• Power transmission and distribution in G and J band networks
• Test and measurement setups bridging waveguide and Type-N coaxial systems

– Compatibility & Integration

The J281A interfaces G and J band waveguides with standard 50-ohm coaxial systems via its Type-N female connector. It terminates at Type-N male connectors commonly found on signal generators, spectrum analyzers, power meters, and other RF test equipment. The adapter maintains the 50-ohm impedance characteristic of coaxial transmission lines, enabling efficient impedance matching across waveguide-coaxial boundaries.

Note: This product is obsolete with no direct replacement identified by the manufacturer.