Agilent/Keysight 87301E

The Agilent/Keysight 87301E is a broadband directional sampling coupler for signal monitoring and signal leveling when paired with a coaxial detector. Operating across 2 GHz to 50 GHz, this compact module delivers 10 ± 1 dB nominal coupling with ±1 dB variation and insertion loss under 2.0 dB. Its minimal footprint and 2.4 mm connectors enable integration into microwave test interfaces and benchtop measurement systems.

– Technical Specifications

• Frequency Range: 2 GHz to 50 GHz
• Nominal Coupling: 10 ± 1 dB with ±1 dB variation across band
• Directivity: 13 dB (2–26.5 GHz), 10 dB (26.5–50 GHz)
• Maximum SWR: 1.5 (2–26.5 GHz), 1.8 (26.5–50 GHz)
• Insertion Loss: <2.0 dB
• Frequency Sensitivity: ±0.7 dB (10–50 GHz range)
• Average Power: 20 W
• Peak Power: 3 kW
• Connectors: 2.4 mm female (rated to 50 GHz)
• Dimensions: 9.7 mm length
• Weight: 34 g

– Key Features

• Wideband operation from 2 to 50 GHz minimizes need for multiple couplers
• Low insertion loss preserves signal integrity in measurement chains
• Controlled directivity ensures clean coupled port isolation
• 2.4 mm connectors provide superior durability and performance over SMA interfaces at microwave frequencies
• Compact module design supports space-constrained test setups

– Typical Applications

• In-service signal monitoring and power measurement
• Signal leveling control when integrated with coaxial detectors
• Microwave test interface unit designs
• Benchtop and field measurement systems requiring broadband sampling

– Compatibility & Integration

The 87301E integrates directly into existing 2.4 mm systems and test benches. Its electrical performance across the full 2–50 GHz band makes it suitable for both development labs and field applications where precise coupling and minimal signal degradation are required.