Basics Of Rf Amplifier Test With The Vector Net... -

Allow both the VNA and the amplifier to reach thermal equilibrium (typically 15–30 minutes) for stable measurements. 2. Calibration (The Foundation)

Similar to S11, this measures how well the output port is matched to the load. Basics of RF Amplifier Test with the Vector Net...

Derived from the phase of S21, this measures the time delay of the signal through the device. Consistent group delay is vital for maintaining signal integrity in wideband communications. Allow both the VNA and the amplifier to

This shows the amplifier's gain across the frequency sweep. Look for "flatness" (minimal variation) over the desired bandwidth. Basics of RF Amplifier Test with the Vector Net...

Before connecting your device, you must protect the VNA’s sensitive input ports.

Indicates how well the input impedance matches the system (usually 50Ω). A lower S11 (e.g., < -10 dB) means less power is reflected back to the source.