The HP/Agilent 85027B is a precision directional bridge engineered for signal separation and power measurement across RF and microwave frequencies. Operating from 10 MHz to 26.5 GHz, it delivers exceptional directivity and low insertion loss, making it essential for network analysis, impedance characterization, and directional power sensing. The bridge couples forward and reflected signals with minimal impact to the main transmission line, enabling detailed measurement of reflection characteristics and power flow direction without signal degradation.
Technical Specifications
Frequency Range: 10 MHz to 26.5 GHz
Coupling Factor: 10 dB ± 0.5 dB (typical) with ± 0.5 dB frequency response across full band
Directivity:
• Main line: ≥ 40 dB (10 MHz to 18 GHz)
• Main line: ≥ 35 dB (18 GHz to 26.5 GHz)
Insertion Loss:
• Main line: ≤ 0.7 dB (typical)
• Coupled line: ≤ 0.8 dB (typical)
VSWR:
• Main line: ≤ 1.25 (typical)
• Coupled line: ≤ 1.35 (typical)
Impedance: 50 Ω nominal
Power Handling:
• Average input: 10 W maximum (25°C ambient, natural convection)
• Peak input: 1 kW (1 µs pulse, 0.1% duty cycle)
Connectors: Type-N female
– Key Features
High directivity across an extended bandwidth ensures accurate separation of forward and reflected signals. Low insertion loss on both main and coupled lines preserves signal integrity. Excellent VSWR performance maintains impedance matching throughout the operating range. Type-N connectors provide reliable, repeatable connections suitable for laboratory and field environments.
– Typical Applications
• Vector network analysis and S-parameter characterization
• Impedance matching evaluation of transmission lines, antennas, and circuits
• Forward and reflected power monitoring with minimal main-line perturbation
• Directional power flow measurement in transmission systems
– Compatibility & Integration
Designed for use with RF test systems employing Type-N connectors, including network analyzers, spectrum analyzers, signal generators, and RF power meters operating within the 10 MHz to 26.5 GHz band.
