The Agilent/Keysight 772D is a dual directional coupler engineered for broadband swept reflectometer measurements and leveling across 2 to 18 GHz. This coaxial device delivers 20 dB nominal coupling with ±1.0 dB maximum variation over frequency, high directivity (30 dB minimum at 2–12.4 GHz), and low main line SWR for excellent source match in RF and microwave systems. Single setup and calibration serve the entire operating range, reducing test cycle time and cost.
Technical Specifications
Frequency & Coupling Performance
• Frequency range: 2 to 18 GHz
• Nominal coupling: 20 dB
• Maximum coupling variation: ±1.0 dB (2–18 GHz)
• Minimum directivity: 30 dB (2–12.4 GHz), 27 dB (12.4–18 GHz)
• Tracking between auxiliary arms: <±0.7 dB
Impedance & Loss
• Maximum main line SWR: 1.28 (2–12.4 GHz), 1.40 (12.4–18 GHz)
• Maximum coupled line SWR: 1.30 (2–12.4 GHz), 1.40 (12.4–18 GHz)
• Maximum main line residual loss: <1.5 dB (2–18 GHz)
Power Handling
• 2–18 GHz: 50 W (47 dBm) average, 250 W (54 dBm) peak
• Extended range (18–20 GHz, typical): 50 W (47 dBm) average, 250 W (54 dBm) peak
– Key Features
• Dual directional architecture for simultaneous forward and reverse power measurement
• Broad 2–18 GHz coverage minimizes test equipment count
• Coupling uniformity maintained across full frequency range
• Connector configuration varies by model suffix
– Typical Applications
• Forward and reverse power measurements on transmitters and broadband subsystems
• Reflectometer-based impedance and return loss characterization
• Transmitter leveling and output power monitoring
• Component characterization in swept frequency systems
– Compatibility & Integration
The 772D integrates with Keysight power sensors and power meters for reflectometer applications. Connector types are model-dependent; consult product SKU for specific interface configuration.
Physical: 39.1 cm (L) × 13.34 cm (W) × 4.13 cm (H), 2.6 kg
