Agilent / Keysight N5221B 13.5 GHz PNA Microwave Network Analyzer

The Keysight N5221B is a 13.5 GHz PNA microwave network analyzer engineered for precision RF and microwave characterization from 900 Hz to 13.5 GHz. Available in 2-port and 4-port configurations with single or dual internal sources, it delivers 137 dB system dynamic range at 10 GHz and supports S-parameter, noise figure, pulsed, and active component measurements across aerospace, defense, and communications sectors.

Technical Specifications

Frequency Range: 900 Hz to 13.5 GHz; 10 MHz to 13.5 GHz Port Configuration: 2-port and 4-port models Sources: Single source (2-port); dual source (4-port). Internal second source for IMD, hot-S22, and high-speed swept-LO measurements. Dynamic Range: 137 dB system dynamic range @ 10 GHz. Receiver compression at 0.1 dB (typical) at test port. Output Power: +13 dBm maximum leveled output; 38 dB power sweep range. Test Ports: 50 Ω ruggedized 3.5 mm male connectors. Measurement Performance:

• Trace noise magnitude: 0.003 dB RMS


• Trace noise phase: 0.007 deg RMS (typical, 100 MHz to 13.5 GHz)


• Test port noise floor: −140 dBm @ 10 Hz IFBW (typical)


• Receiver compression: 0.1 dB (typical) Measurement Speed: 201-point sweep in 5.5 to 6.3 ms. Interfaces: USB, LAN, multi-touch display, solid-state drive. Physical: 24 × 20 × 16 inches; 50 lbs. Operating Conditions: Specifications valid 25 °C ±5 °C, 90 minutes after power-on.

Key Features

• High-accuracy S-parameter measurements with stability suited for production and R&D


• Pulsed S-parameter capability with built-in pulse modulators and generators


• Noise figure characterization


• Mixer, frequency converter, and group delay measurements with frequency-tracking software


• Amplifier testing: gain, return loss, harmonics, and IMD


• Active component characterization with simplified setup

Typical Applications Aerospace and defense RF component validation, communications amplifier characterization, mixer and converter analysis, and high-volume manufacturing test.

Compatibility & Integration USB and LAN connectivity support automated test environments and integration into production workflows.