Agilent / Keysight N5280A Frequency down converter, 10 MHz to 26.5 GHz

The Keysight N5280A is a four-channel frequency down converter that extends the measurement capability of network analyzers and receivers across the 10 MHz to 26.5 GHz band. This converter operates at unity gain and provides dual IF output paths: a low-frequency path delivering 0.007 to 20 MHz with jumper configuration, and a wideband path reaching 0.007 to 1.5 GHz without jumper. The N5280A integrates with Keysight PNA-X network analyzers and measurement receivers to enable precise characterization of reflection and transmission parameters, antenna behavior, radar cross-sections, and frequency translation devices.

– Technical Specifications

• Frequency Range: 10 MHz to 26.5 GHz
• Channels: Four
• Gain: Unity gain
• IF Output Range (Low Frequency Path): 0.007 to 20 MHz (with jumper)
• IF Output Range (Wideband Path): 0.007 to 1.5 GHz (without jumper)
• Weight: 50 lbs

– Key Features

• Four independent converter channels for parallel measurement pathways
• Dual IF output configurations accommodate both narrow-band and broadband measurement requirements
• No internal calibration adjustments required; system-level calibration with compatible analyzers ensures measurement accuracy

– Typical Applications

• Reflection and transmission parameter measurement on one-port and two-port devices
• Antenna characterization and pattern analysis
• Radar cross-section (RCS) measurements
• Frequency translation device characterization

– Compatibility & Integration

The N5280A operates with Keysight N5242A PNA-X network analyzers (2-port or 4-port configurations) and the N5264A measurement receiver. Integration with external microwave accessories including couplers and power splitters is supported. System performance characteristics depend on the specific PNA model and external components such as calibration kits and measurement receivers used in the test configuration.