Agilent / Keysight N5234A 43.5 GHz PNA-L Microwave Network Analyzer

The Keysight N5234A is a 43.5 GHz PNA-L Microwave Network Analyzer engineered for high-accuracy S-parameter measurements across R&D and manufacturing environments. This 2-port benchtop instrument delivers dynamic range to 127 dB with trace noise as low as 0.003 dB rms, making it well-suited for passive component characterization and active device measurement including amplifiers and frequency converters.

Technical Specifications

• Frequency Range: 10 MHz to 43.5 GHz


• Ports: 2 built-in ports (2 or 4-port configurations available)


• Channels: 32 independent measurement channels


• Dynamic Range: Up to 127 dB


• Trace Noise: 0.003 dB rms


• Trace Points: 32,001 points maximum


• Output Power: 6 dBm or 0 dBm


• Noise Floor: −110 dBm (10 Hz IF bandwidth)


• IF Bandwidth: 15 MHz


• Harmonics: −33 dBc

Key Features

• Single built-in source for 2-port operation


• TRL (Thru-Reflect-Line) calibration for in-fixture, on-wafer, and waveguide measurements


• N-port calibration capability


• Single-ended, balanced, and mixed-mode S-parameter measurement


• Pulsed S-parameter measurements with integrated pulse modulators and generators


• Ratioed and unratioed receiver measurements


• USB, LAN, and GPIB connectivity


• Benchtop form factor: 24 × 20 × 16 inches, 50 lbs

Typical Applications Passive component validation, active device characterization, millimeter-wave analysis, signal integrity assessment, and materials measurement.

Compatibility & Integration The N5234A shares firmware with the PNA series and maintains 100% compatibility with the N5230C, requiring no changes to existing test setups or measurement code. The N5234A entered obsolescence as of June 1, 2024, with reduced standard support; Keysight offers hardware and firmware upgrades to the N5234B model for continued technical support and serviceability.