method for calibration of a network analyser according to the seven term principle

摘要

The calibration system is used for a network analyser with two measuring gates and at least four measuring positions, via successive measurement of transmission and reflection parameters at three calibration standards connected across the measuring gates in a given order using a seven-term principle. A line which is used for the first calibration measurement has a known wave resistance and unknown complex electrical propagation constants, which are calculated from the measured values obtained for all three calibration standards.