The Agilent/Keysight 5086-7489 is a 50 Ohm bias test port coupler that enables DC bias injection and RF signal coupling for active device characterization in network analyzer systems. Operating across 300 kHz to 6.0 GHz, it functions as a bias tee—applying DC voltage to a Device Under Test through a dedicated port while preserving RF signal integrity on the main measurement path. This capability is essential for S-parameter measurements on biased components such as amplifiers and transistors that require specific operating voltages.
Technical Specifications
• Impedance: 50 Ohms
• Frequency Range: 300 kHz to 6.0 GHz
• Connector Type: Standardized RF connectors (SMA or 3.5 mm typical)
• Form Factor: Compact coupler module for bench and system integration
– Key Features
• Bias tee architecture separates DC bias path from RF signal path
• Maintains signal integrity across RF and lower microwave frequencies
• Designed for integration into swept-frequency test environments
• Supports measurement of active devices requiring DC bias during RF characterization
– Typical Applications
• S-parameter measurement of biased amplifiers and transistors
• Active component characterization requiring simultaneous bias and RF stimulus
• Device-under-test (DUT) biasing in network analyzer workflows
• RF/microwave component testing with DC operating point control
– Compatibility & Integration
Primarily designed for use with Agilent/Keysight 8753X series network analyzers and compatible vector network analyzer platforms. Interfaces with standard RF test equipment through conventional connector types, enabling seamless integration into existing measurement systems where bias injection is required.
