The Agilent/Keysight 87301B is a compact, broadband directional sampling coupler for signal monitoring and leveling applications across microwave test systems. Operating from 10 to 46 GHz, this 2.92 mm female connector device delivers 10 ±0.7 dB nominal coupling with directivity maintained across its full frequency range. Insertion loss remains below 1.9 dB, while maximum SWR is 1.8, ensuring minimal system disruption.
Designed for integration with external detectors and analyzers, the coupler samples a precise fraction of transmitted power without significantly attenuating the main signal path. This architecture makes it ideal for real-time power monitoring, frequency verification, and spectrum analysis in high-frequency measurement chains.
Technical Specifications
• Frequency range: 10 to 46 GHz
• Nominal coupling: 10 ±0.7 dB
• Directivity: 10 dB (10 to 46 GHz)
• Insertion loss: < 1.9 dB
• Maximum SWR: 1.8
• Connector type: 2.92 mm female
– Key Features
• Broad frequency coverage across X-, Ku-, and Ka-band
• Low-loss main-line path for minimal system impact
• Directional sampling port for clean signal extraction
• Compact form factor for space-constrained applications
– Typical Applications
• Power monitoring with 848X series power sensors
• Frequency verification via microwave counter connection
• Spectrum analysis using signal analyzer integration
• Real-time signal leveling in swept-frequency systems
– Compatibility & Integration
Terminate the unused port with 50 Ω load during operation. Full 2-port network analyzer calibration is recommended for highest measurement accuracy. The sampled output port accepts standard microwave test equipment, enabling modular system design across production and R&D environments.

















