Ion-Linear Measurements Using Six-Port Network Analyzer

The six-port junction has already proven to be very useful in small-signal measurements of multi-port networks. The aim of this paper is to demonstrate that it can also be used to determine equivalent non-linear circuit models of selected components, through measurements only at the fundamental frequency. The examples taken are packaged PIN and varactor diodes. Small-signal measurements are presented together with the plan to obtain optimized linear and non-linear models.