The HP/Agilent 85027C is a coaxial directional bridge engineered for reflection coefficient measurements from 10 MHz to 18 GHz. It integrates with scalar network analyzers including the 8757, 8756, and 8755 series to enable precise characterization of microwave components in both AC and DC detection modes.
Technical Specifications
Frequency Range: 10 MHz to 18 GHz
Directivity:
• 0.01 GHz to 12.4 GHz: 36 dB
• 12.4 GHz to 18 GHz: 34 dB
Test Port Match (VSWR):
• 0.01 GHz to 8.4 GHz: <1.15
• 8.4 GHz to 12.4 GHz: <1.25
• 12.4 GHz to 18 GHz: <1.43
Connectors: Type N (female) — input and test port
Detection Modes: AC and DC (analyzer dependent)
Physical Dimensions: 8 × 6 × 4 inches
Weight: 5 lbs
– Key Features
• High directivity across the L-band through upper K-band delivers accurate forward/reverse signal separation
• Excellent test port match minimizes reflection errors and improves measurement repeatability
• Coaxial construction ensures compatibility with standard RF test benches
• Dual detection capability extends measurement flexibility across analyzer platforms
– Typical Applications
• Reflection and return loss measurements on active and passive RF/microwave devices
• Component characterization including filters, amplifiers, and antennas
• Network analyzer calibration and verification
• S-parameter acquisition in scalar measurement mode
– Compatibility & Integration
Designed for integration with HP/Agilent scalar network analyzers:
• 8757 series (AC and DC detection)
• 8756 series (AC detection)
• 8755 series (AC detection)
Standard N-type connectors enable straightforward interconnection with 50 Ω coaxial test systems. Included accessories support immediate deployment: adapter barrel (50 Ω N(m)–N(m)), open-short calibration assembly (50 Ω N(m)), protective case, and product documentation on CD.
