Agilent/Keysight M9379A

The Keysight M9379A is a single-slot PXIe RF amplifier module engineered to enhance receiver performance and expand dynamic range in Keysight's PXIe Vector Network Analyzers. It integrates dual amplifiers, RF switches, and a programmable step attenuator to improve signal-to-noise ratio and enable advanced noise figure measurements across a wide RF bandwidth.

Technical Specifications

• 50 MHz to 13.5 GHz Amplifier Performance


• Forward Gain: ≥25 dB at 3 GHz (typical)


• Saturated Output Power: ≥+21 dBm at 3 GHz (typical)


• Noise Figure: 5 dB at 3 GHz (typical) Physical & Operating Conditions


• Module Size: 1-slot PXIe format


• Operating Temperature (controlled): 20°C to 30°C ambient; 33°C to 46°C module temperature


• Operating Temperature (full range): 0°C to 55°C ambient; 10°C to 70°C module temperature

Key Features

• Dual-amplifier architecture with user-selectable signal paths


• Programmable pre-amplifier with variable gain via step attenuator or bypass path


• Fixed-gain booster amplifier for source enhancement


• Integrated RF switches for rapid path control


• Firmware-synchronized operation with M980xA VNA for coordinated S-parameter and noise figure measurements

Typical Applications

• Noise figure characterization of passive and active devices


• High-rejection filter measurements with enhanced dynamic range


• Low-level signal detection requiring improved receiver sensitivity


• Multi-port device characterization with simultaneous S-parameter and noise data

Compatibility & Integration The M9379A operates with PXIe system controllers (PXI-1 embedded controllers are not supported) and is optimized for M9485A and M980xA series PXIe Vector Network Analyzers. When paired with the M980xA, internal switches are directly controlled by the analyzer's firmware, enabling synchronized fast measurements. With the M9485A and its direct-access receivers and high-power coupler, dynamic range extends for challenging filter measurements. The module requires a 2x8, 4x4, or 1x8 PXIe system slot link configuration and operates on supported operating systems with appropriate network analyzer software and device drivers.