Keysight (Agilent) V85104A WR-15 Test Set Module, 50 GHz to 75 GHz

The Keysight (Agilent) V85104A WR-15 Test Set Module is a millimeter-wave test accessory designed for S-parameter characterization in the 50 GHz to 75 GHz frequency band. This module integrates waveguide hardware components—frequency multiplier, isolators, directional couplers, and harmonic mixers—into a compact unit optimized for quick integration into network analyzer systems. It connects directly to the Keysight 85105A millimeter-wave controller and terminates in a WR-15 waveguide connector for direct device-under-test coupling.

– Technical Specifications

• Frequency Range: 50 GHz to 75 GHz
• Waveguide Standard: WR-15
• Integrated Components: Frequency multiplier, isolators, directional couplers, harmonic mixers
• Weight: 10 lbs

– Key Features

• Single integrated module eliminates separate component assembly
• Harmonic mixer topology extends measurement capability across full 50–75 GHz band
• Directional coupling enables incident and reflected wave monitoring
• Isolation circuits minimize source pulling and enhance measurement fidelity
• WR-15 test port accepts standard millimeter-wave DUT fixtures

– Typical Applications

• Millimeter-wave component S-parameter measurement (reflection and transmission)
• Active device characterization at Ka/Q/V band frequencies
• Waveguide filter and antenna network analysis
• Frequency multiplier and mixer evaluation
• Amplifier small-signal parameter extraction

– Compatibility & Integration

The V85104A operates exclusively with the Keysight 85105A millimeter-wave controller, which provides the IF signal generation, receiver conditioning, and measurement processing required for coherent S-parameter detection. The controller supplies the fundamental frequency drive; the onboard frequency multiplier upconverts to the 50–75 GHz test band. The WR-15 port accepts standard rectangular waveguide test fixtures and direct-flange component connections.