A New Technique for Calibrating Dual Six-Port Networks with Application to S Parameter Measurements

This paper describes a new technique for the simultaneous calibration of two six-port networks as reflectometers. Once calibrated, the complete S parameters of an unknown two-port network can be obtained from power measurements alone. The technique requires only a uniform transmission line, of unknown length and loss, and a short circuit as calibrating standards. Its application to an automated microwave measurement system is described and potential error sources are quantitatively discussed.