Network Analyzer

Frequency range: Covers from (for example) kHz up into GHz (even tens of GHz) depending on application.

S‑parameter measurement capability: Especially S11 (reflection), S21 (transmission), etc.

Magnitude AND phase measurement: For full vector analysis of signal behavior (important for matching, impedance, antenna design).

Calibration and error‑correcting features: To ensure measurement accuracy, especially at high frequency.

Portability / form factor options: Some analyzers are lab‑grade racks, others portable or field‑use models.

User interface & data export: Graphical displays (Smith charts, log magnitude, phase plots), ability to export data for further analysis.