Understanding VNAs - Power Calibration

Although not as a common as system error correction used for S-parameter measurements, scalar power calibration is an important type of VNA calibration needed when making power-related (wave) measurements, particularly for measurements such as gain compression and P1dB. This presentation provides a short technical overview of power calibration, explains the difference between source and receiver power calibration, and describes the process used for each type of power calibration. Download the Fundamentals of Vector Network Analysis primer: http://rsna.us/6051Ura2F Learn more about Vector Network Analyzers from Rohde & Schwarz: http://rsna.us/6052Ura22 Timeline: 00:00 Introduction 00:13 About VNAs and calibration 01:20 About power calibration 02:05 Measurements where power calibration is important 02:56 Two types of power calibration 03:27 About measurement and reference receivers 04:20 About reference receiver calibration 05:08 Performing reference receiver calibration 06:06 About flatness calibration 07:40 About receiver calibration 08:42 Two methods of performing receiver calibration 09:25 Summary