The Keysight 87310B is a 90-degree coaxial hybrid coupler delivering precise 3 dB coupling across the 1 GHz to 18 GHz frequency band. Engineered for RF and microwave measurement systems, it provides the phase and amplitude stability required for signal monitoring, power measurement, and detector-based leveling applications. SMA female connectors ensure standard integration into existing test setups.
Technical Specifications
• Frequency Range: 1 GHz to 18 GHz
• Nominal Coupling: 3 dB
• Amplitude Imbalance: ±0.5 dB at each port (centered at –3 dB)
• Phase Imbalance: ±10 degrees
• Isolation: Greater than 17 dB
• Maximum SWR: 1.35
• Insertion Loss: Less than 2 dB
• Average Power Rating: 20 W
• Connectors: SMA Female
– Key Features
• Maintains ±10 degree phase relationship between output ports—critical for coherent measurement applications.
• Amplitude balance within ±0.5 dB ensures predictable coupling ratios across the operating band.
• Greater than 17 dB isolation between coupled and isolated ports minimizes unwanted signal leakage.
• Insertion loss below 2 dB preserves signal integrity in cascade configurations.
• Low SWR (1.35 maximum) provides good impedance match and reduces reflections.
– Typical Applications
• Signal monitoring and power measurement with coaxial detectors and power sensors
• Signal leveling in automated test equipment
• Frequency monitoring when connected to microwave counters
• Spectrum analysis via signal analyzer integration
• Component in multi-port microwave measurement and calibration systems
– Compatibility & Integration
SMA female connectors interface directly with standard SMA-terminated test equipment, signal sources, detectors, and analyzers. The 1–18 GHz operating range aligns with common measurement bands in communications, radar, and component characterization work.
