Rohde & Schwarz ZNB20 20GHz Vector Network Analyzer

The Rohde & Schwarz ZNB20 is a 2- or 4-port vector network analyzer delivering S-parameter measurements across 100 kHz to 20 GHz with exceptional dynamic range and measurement speed. Built for RF and microwave characterization in research, development, and production, it combines 140 dB dynamic range, sub-5 microsecond measurement points, and trace noise below 0.004 dB RMS to enable precise device and circuit validation in communications, aerospace, and high-speed digital design.

Technical Specifications

• Frequency Range: 100 kHz to 20 GHz


• Ports: 2 or 4, expandable to 48 using switch matrices


• Impedance: 50 Ω


• Test Port Connector: 3.5 mm male, ruggedized


• Output Power: Up to +13 dBm, electronically adjustable over 95 dB range


• IF Bandwidth: 1 Hz to 10 MHz (1, 1.5, 2, 3, 5, 7, 10 steps)


• Dynamic Range: 140 dB standard; 150 dB with ZNB8-B5x option at 1 Hz measurement bandwidth


• Trace Noise: <0.004 dB RMS at 10 kHz IF bandwidth


• Measurement Speed: Better than 5 µs per point; 4 ms sweep for 401 points


• Temperature Stability: Magnitude drift <0.01 dB/°C; phase drift <0.15°/°C

Key Features

• Large 12.1" high-resolution touchscreen display


• Remote control via LAN (RSIB, VXI-11, HiSLIP) or USB


• Electronic calibration kit with automatic calibration units supporting up to 24 ports; 30-second calibration cycle for 201 points


• Embedding/de-embedding for DUT characterization


• Mixed-mode and redefined S-parameter support


• Low power consumption and quiet operation

Typical Applications Device characterization in communications infrastructure, aerospace subsystems, RF/microwave component development, and high-speed digital interconnect validation.

Compatibility & Integration Supports switch matrix expansion to 48 ports. Automatic calibration units accelerate production workflows. Time-domain capabilities enable transient and impulse response analysis.