Agilent / Keysight N5191A UXG X-Series Agile Signal Generator, Modified Version

The Keysight N5191A UXG X-Series Agile Signal Generator, Modified Version, is a RF signal source engineered for complex waveform generation in aerospace, defense, and wireless communication testing. It delivers fast frequency switching, phase coherency, and advanced modulation across a wide frequency range, enabling multi-emitter simulation, radar signal generation, antenna testing, and electronic warfare applications. The instrument's agile architecture supports complex pulse modulation, variable rise/fall times, and arbitrary waveforms with switching speeds as fast as 370 ns.

Technical Specifications

• Range: 10 MHz to 40 GHz (option dependent)


• CW Frequency Resolution: 10 kHz


• Fine Frequency Resolution (Option FR1): 0.001 Hz Output Power


• Standard Output Power: +10 dBm to −10 dBm Switching Speed


• Standard: 100 µs up to 31.6 GHz; 500 µs up to 40 GHz


• Optional: 1 µs and 370 ns available


• DDS Switching: 170 ns for frequency, amplitude, and phase updates Phase Noise


• Standard: −117 dBc/Hz (typical) at 20 kHz offset, 10 GHz carrier Output Impedance


• 50 Ω nominal

Key Features Modulation Capabilities

• AM, FM, phase modulation, and narrowband chirp


• FMCW chirp via Fast Control Port (FCP) in Normal mode


• Wideband Chirp (minimum 10%) with Options UT1 and PM2


• Pulse modulation with 90 dB on/off ratio for narrow pulses Agile Performance


• Phase coherent switching returns to prior phase trajectory at repeated frequencies


• Phase continuous switching minimizes spectral splatter during band transitions


• Frequency and amplitude hopping enabled by UXG custom semiconductors Interfaces & Connectivity


• 50-pin BCD I/O interface


• 10 GB Ethernet I/O interface


• Connector adapters: 3.5 mm (20 GHz model); 2.4 mm and 2.4 mm to 2.9 mm (40 GHz model)


• External reference input support

Typical Applications Radar signal simulation, threat emulation, antenna characterization, EW system testing, multi-emitter environment replication, and RF subsystem validation requiring agile frequency control and phase coherency.

Compatibility & Integration Designed for integration into existing threat simulators or deployment as a standalone RF source. Supports SCPI command control and external reference synchronization for networked test environments.