The Keysight (Agilent) E5504B Phase Noise Measurement Solution characterizes phase noise in signal sources and components from 50 kHz to 26.5 GHz. This system simplifies phase noise and AM noise measurements for VCOs, DROs, crystal oscillators, and synthesizers in both benchtop R&D and automated test environments.
– Technical Specifications
• Frequency Range: 50 kHz to 26.5 GHz; expandable to 110 GHz with appropriate configurations
• Offset Frequency Range: 0.01 Hz to 100 MHz
• System Noise Response: Typically −180 dBc/Hz at offsets greater than 10 kHz
• System Spurious Response: Typically −120 dBc
• Phase Detector Input Power (carriers below 1.6 GHz): R input 0 to +23 dBm; L input +15 to +23 dBm
– Key Features
• Phase noise measurement with sensitivity
• Direct AM noise measurement capability on carriers up to 26.5 GHz (Option 001)
• Offset frequency resolution from 0.01 Hz to 100 MHz
• Millimeter-band support through compatible harmonic mixer modules
• 26.5 GHz microwave downconverter for high-power LO drive applications
– Typical Applications
• One-port VCO characterization
• DRO and crystal oscillator phase noise assessment
• Synthesizer performance validation
• Millimeter-wave phase noise measurement (with optional accessories)
– Compatibility & Integration
The E5504B integrates hardware and software components including PC-based Windows NT 4.0 control, VXI digitizer mainframe, and RF spectrum analyzer. Optional configurations support extended frequency coverage via Agilent 11970 series millimeter harmonic mixers. Provides an upgrade path from legacy Keysight 3048 systems.



















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