Keysight (Agilent) M1971E Waveguide Harmonic Mixer

The Keysight M1971E Waveguide Harmonic Mixer extends signal analyzer frequency coverage into the millimeter-wave band, enabling precision measurements across 5G, automotive radar, and aerospace/defense applications. This mixer uses harmonic mixing principles (LO × N = RF + IF) with automatic LO harmonic selection based on frequency range. USB plug-and-play integration with X-Series signal analyzers delivers automatic model detection, conversion loss data download, and LO path loss compensation—reducing setup time while optimizing system noise floor and third-order intercept performance.

– Technical Specifications

Frequency Range
• M1971E Option 001: 60 GHz to 90 GHz
• M1971E Option 003: 55 GHz to 90 GHz

Harmonic Operation
• Harmonic -6: 50 GHz to 70 GHz
• Harmonic -8: 69.5 GHz and above
• LO frequency determined by host signal analyzer IF path setting

IF Bandwidth & Paths
• Normal Path: ~1.2 GHz IF bandwidth; supports I/Q measurements
• Dual Conversion Path: Wideband modulated carrier swept measurements; utilizes host instrument 10 MHz external reference for second LO generation; image-free range optimized
• Auxiliary Equipment Path: User-defined IF frequency output on separate port; designed for I/Q acquisitions exceeding internal instrument IF bandwidth; conversion loss and IF flatness data provided via host signal analyzer file

– Key Features

• Automatic mixer model detection and configuration
• Conversion loss data auto-download via USB
• LO path loss compensation integrated
• Multiple IF path options for diverse measurement requirements
• Compatible with Keysight external reference outputs for dual-conversion operation

– Typical Applications

• 5G mmWave signal characterization
• Automotive radar system validation
• Aerospace and defense RF measurements
• Wideband modulated signal analysis
• High-bandwidth I/Q acquisitions

– Compatibility & Integration

Signal Analyzers: Keysight N9040B UXA, N9030A PXA, N9020A MXA, N9010A EXA

Oscilloscopes: Keysight MSOS404/604/804A and DSOS404/604/804A

Interface: USB plug-and-play with automatic detection