Keysight (Agilent) N9040B UXA Signal Analyzer, 2 Hz to 50 GHz

The Keysight N9040B UXA Signal Analyzer delivers signal analysis from 2 Hz to 50 GHz, with extensibility to 110 GHz using Keysight smart mixers and terahertz frequencies via third-party solutions. Purpose-built for 5G, 802.11ax/ay, satellite, radar, and electronic warfare applications, the N9040B characterizes fast-hopping, wideband, and transient signals with phase noise and spurious-free dynamic range exceeding 75 dBc across 510 MHz bandwidth.

Technical Specifications

• Frequency Range: 2 Hz to 50 GHz base; up to 110 GHz with external smart mixers; terahertz capable with third-party solutions


• Analysis Bandwidth: 25 MHz standard; optional 40 MHz, 255 MHz, 510 MHz, and 1 GHz configurations


• Real-Time Spectrum Analysis: 510 MHz maximum real-time bandwidth with 100% Probability of Intercept for signals as short as 3.51 µs


• Displayed Average Noise Level: -174 dBm @ 1 GHz (preamplifier and Noise Floor Extension enabled)


• Phase Noise: -135 dBc/Hz @ 1 GHz (10 kHz offset); -146 dBc/Hz @ 1 GHz (1 MHz offset); -126 dBc/Hz @ 10 GHz (10 kHz offset)


• Spurious-Free Dynamic Range: >75 dBc across 510 MHz bandwidth


• Third-Order Intermodulation Distortion (TOI): +23 dBm @ 2 GHz


• Amplitude Accuracy: ±0.16 dB

Key Features

• Gap-free, real-time spectrum analysis captures intermittent signals with advanced triggering


• Low-noise signal path enables detection of lower-level spurious signals


• Multi-touch interface simplifies operation and navigation


• Multiple display modes including spectrum, spectrogram, power versus time, and digital density

Typical Applications 5G and wireless standards, millimeter-wave satellite communications, radar signal characterization, and electronic warfare signal detection and analysis.

Compatibility & Integration Integrates with 89600 VSA software for advanced modulation and transient signal analysis. Supports external mixer configurations for frequency extension beyond native 50 GHz range.