The Agilent/Keysight 11971K is a waveguide harmonic mixer that extends spectrum analyzer and signal generator measurement capability into K-band millimeter-wave frequencies. It converts RF signals from 18.0 to 26.5 GHz to lower intermediate frequencies processable by standard test equipment, enabling direct integration with compatible analyzers via external mixer ports.
Technical Specifications
• Frequency Range: 18.0 GHz to 26.5 GHz
• IF Bandwidth: 321.4 MHz
• Local Oscillator Input: +14 dBm to +18 dBm (optimum +16 dBm)
• Maximum CW RF Input Level: +20 dBm (100 mW)
• Waveguide Flange: UG-599/U
• Conversion Loss: Low (dual-diode construction)
• Frequency Response: Flat across operating range
• Operating Altitude: Less than 3,048 meters (10,000 ft)
• Non-Operating Altitude: Less than 12,195 meters (40,000 ft)
– Key Features
• Dual-diode construction delivers flat frequency response and low conversion loss
• No external DC bias or manual tuning adjustments required—simplifies both manual and automated operation
• LO input typically requires SMA connector; external amplifiers such as the HP 11975A enable optimal +16 dBm LO drive
• IF output connects directly to spectrum analyzer external mixer port via SMA cable
– Typical Applications
• K-band RF signal measurement and analysis
• Millimeter-wave component characterization
• Extended-range spectrum analyzer operation
• Signal generator frequency range extension
– Compatibility & Integration
The 11971K integrates with Agilent/Keysight spectrum analyzers including the HP 8569B, E4440A/E4446A/E4448A PSA Series (Option AYZ), E4407B ESA-E Series (Option AYZ), 856xEC Series, 8566B (with preamplifier), and 7000 modular analyzer (with 70907A/B external mixer interface module).
