The Agilent/Keysight 11974A is a preselected millimeter-wave harmonic mixer that extends spectrum analyzer frequency coverage from 26.5 GHz to 40 GHz. It converts millimeter-wave input signals to intermediate frequencies (DC to 1.3 GHz) for processing by standard spectrum analyzers, enabling accurate characterization of millimeter-wave devices without requiring signal identification or worrying about local oscillator harmonic interactions.
Technical Specifications
• RF Frequency Range: 26.5 GHz to 40 GHz
• IF Output Range: DC to 1.3 GHz
• LO Input Range: 3 GHz to 6.1 GHz
• LO Amplitude: +14.5 dBm to +16 dBm (required for specified accuracy)
• Maximum CW RF Input: +20 dBm (100 mW)
• Maximum Peak Pulse Power: +24 dBm (250 mW) for pulses < 1 µs (average power +20 dBm)
• RF Input SWR: 20 dB
• Third-Order Intercept (IP3): ≥ +13 dBm (two signals spaced < 200 MHz apart)
• IF Subharmonic Response (IP2): ≥ +45 dBm (response at fIF/2)
• Connectors: SMA female (IF/LO); BNC (TUNE IN)
• Dimensions: 210.2 mm × 84.7 mm
• Weight: 14.3 kg
– Key Features
• Preselection eliminates broadband mixer overload and reduces signal identification overhead
• No bias requirements; passive operation simplifies integration
• Built to MIL-T-28800 Type III Class 3 Style C environmental standards
• Operates across temperature range of −40 °C to +75 °C (non-operating)
• Survives shock to 30 g and vibration from 5 Hz to 55 Hz at 2 g maximum
• Meets MIL-STD-461B conducted emissions requirements
– Typical Applications
• Millimeter-wave component and system characterization
• Automated measurement software development for mmW devices
• Rapid signal detection and frequency identification in mmW bands
• Harmonic content analysis without local oscillator bleed-through
– Compatibility & Integration
Designed for use with Keysight E4440A/46A/48A PSA Series and E4407B ESA E Series spectrum analyzers.
