The Keysight (Agilent) U9391G Comb Generator produces harmonically related frequencies spanning 10 MHz to 67 GHz, functioning as a precision phase reference standard for nonlinear measurements. Engineered around InP MMIC technology, it delivers superior phase stability and enables phase calibration of PNA and PNA-X network analyzers without external reference or calibration mixers. The device accepts input signals from 10 MHz to 6 GHz at power levels between −15 dBm and +15 dBm, and features a USB-controlled frequency divider with selectable divide ratios (1, 2, 4, 8, or 16× PRF). Minimum output tone spacing is 10 MHz, and calibration at a single input power level and frequency extends across a wider measurement range.
Technical Specifications
• Output frequency range: 10 MHz to 67 GHz
• Input frequency range: 10 MHz to 6 GHz
• Input power range: −15 dBm to +15 dBm
• Minimum output power per picket: −80 dBm at 10 MHz input PRF
• Amplitude flatness vs. output frequency: < 12 dB at 10 MHz input PRF
• Amplitude flatness vs. input power: 0.1 dB (typical)
• Phase flatness: ±8.5° (10 MHz to 3 GHz), ±6.5° (3 GHz to 20 GHz), ±8.5° (20 GHz to 26.5 GHz)
• Pulse width: 10 dB (10 MHz to 6 GHz)
• Output return loss (S22): > 10 dB (10 MHz to 26.5 GHz)
• Power supply: 15 VDC ± 10%
• Current draw: 300 mA (nominal)
• Operating temperature: 0 to +40 °C
• Storage temperature: −40 to +70 °C
– Key Features
• Selectable divide ratio (1, 2, 4, 8, 16× PRF) via USB control
• Compact form factor: 0.435 kg with integrated handgrip for improved handling and thermal management
• Output connectors available with female (Option FFF) or male (Option FFM) configurations
• Includes U9391-60009 sine-to-square wave converter for optimal performance with sine inputs below 100 MHz, especially above 26.5 GHz output frequencies
– Typical Applications
• Phase reference calibration for nonlinear vector network analyzer measurements
• Frequency converter phase and delay characterization
• Multiharmonic signal generation across microwave and millimeter-wave bands
– Compatibility & Integration
Designed for integration with Keysight PNA-X nonlinear vector network analyzers. PNA-X Options 400, 419, 080, and 510 are required for full compatibility.
