Agilent/Keysight 70907B – Microwave Preamplifier Module

The Keysight 70907B is an External Mixer Interface Module (EMIM) that integrates preselected millimeter-wave mixers with Keysight 70000 series modular spectrum analyzers. The module supplies swept Local Oscillator (LO) and tune/span signals to external mixers, receives the resulting intermediate frequency (IF) signal, converts it to 21.4 MHz, and outputs it to a compatible IF module. This architecture extends spectrum analyzer measurement capability into the millimeter-wave band.

Technical Specifications

• IF output frequency: 21.4 MHz


• Compatible with Keysight 11974 series preselected millimeter mixers


• Compatible with Keysight 11970 series mixers (frequency range to 110 GHz)


• Compatible with third-party external millimeter mixers (frequency range to 325 GHz, non-preselected)


• Requires Keysight 70900A or 70900B LO module with specific date code compatibility

Key Features

• Swept LO signal generation and distribution to external mixers


• Tune and span signal control for external mixer operation


• IF signal reception and conversion to standardized 21.4 MHz output


• Software-selectable external mixer configuration via softkeys


• Modular form factor for direct 70000 series chassis integration

Compatibility & Integration The 70907B works with the Keysight 70000 series modular spectrum analyzer platform. It accepts IF and control signals from external millimeter mixers and interfaces directly with compatible 70000 series IF modules. Users operating a Keysight 70907A can upgrade to the 70907B using the 70907A K74 upgrade kit, which supports customer installation.

Typical Applications

• Millimeter-wave spectrum analysis from external mixer interfaces


• Extended frequency range measurements beyond standalone analyzer capability


• Preselected mixer integration for improved selectivity


• Multi-mixer configurations selectable via software control