The Keysight 85320A Test Mixer Module performs frequency conversion in RF and microwave measurement systems, enabling downconversion and upconversion of signals across multiple frequency bands. This mixer module integrates into larger test setups, particularly with the 85309B Distributed Frequency Converter and N5222A network analyzer, to extend measurement capabilities beyond native instrument bandwidth.
Technical Specifications
Frequency Range
• RF input: 1 to 26.5 GHz with IF output 300 MHz to 3 GHz (standard)
• Option 85320A-H50: 2 to 50 GHz RF input
• Option 85320A-H20: 0.1 to 3.0 GHz RF input
Operating Modes
• Fundamental Mode: 2 to 18 GHz with optimized sensitivity and lower conversion loss
• Third Harmonic Mode: Extends RF measurement capability to three times maximum LO frequency; reduced sensitivity versus fundamental mode
Conversion Loss (typical)
• 2–3 GHz: 12.0 dB
• 3–5 GHz: 11.0 dB
• 5–18 GHz: 14.7 dB
• 6–8 GHz: 23.8 dB
• 8–16 GHz: 26.5 dB
• 16–26.5 GHz: 28.5 dB
LO Signal Power (1 to 18 GHz)
• Minimum: +7.5 dBm
• Typical: +11 dBm
• Maximum: +12 dBm
IF Output: Typically 20 MHz
– Key Features
• Integrated diplexer combines LO and IF signals on a single coaxial connector, reducing connection complexity
• Compact dimensions: 83 mm width × 122 mm height
• Weight: 615 g
• Operating temperature: 0 °C to +55 °C
• Storage temperature: −40 °C to +75 °C
• Humidity tolerance: 5 to 90% RH, non-condensing
– Typical Applications
Frequency extension for network analysis, RF signal characterization across X-band through Ka-band, and broadband measurement systems requiring precision downconversion to analyzable IF frequencies.
– Compatibility & Integration
Designed for integration with Keysight 85309B Distributed Frequency Converter/LO/IF Distribution Unit and N5222A network analyzer. Select options (85309B Option 400, 401, or 402) may be required for specific configurations.
