The Agilent/Keysight 85518A is a spectrum analyzer adapter that extends frequency coverage and measurement capability across waveguide bands. It bridges waveguide signal sources to coaxial spectrum analyzer inputs, enabling RF and microwave characterization in laboratory and field environments.
Technical Specifications
• Input connector: Waveguide interface (flange type per product specification)
• Output connector: Coaxial connector (Type N or SMA, design-dependent)
• Insertion loss: Specified per product datasheet
• VSWR: Low-impedance design for minimal signal reflections
• Power handling: Maximum RF input power rating per specification
• Harmonic distortion: Quantified to support high-purity signal applications
• Spurious responses: Minimized non-harmonic output signals
– Key Features
• Waveguide-to-coaxial conversion for extended frequency reach
• Impedance-matched design to reduce measurement error from reflections
• Low insertion loss for system budget accuracy
• Passive design with no external power requirement
• Calibrated performance across specified frequency bands
– Typical Applications
• Microwave signal analysis across multiple waveguide bands
• RF component and subsystem characterization
• Network analyzer and spectrum analyzer extension for higher frequencies
• Field and laboratory measurement of waveguide-coupled sources
– Compatibility & Integration
The 85518A interfaces with compatible Agilent/Keysight spectrum analyzers via coaxial connection and accepts standard waveguide inputs. Physical construction supports laboratory and field deployment. Integration requires host spectrum analyzer supporting the adapter’s output connector type and input impedance.
