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The characteristics of three existing S-matrix reconstruction transforms on the multiport network characterization are studied for the case of using a single kind of auxiliary terminations. Three unifying properties are discerned and experimentally verified. It is found that the three existing S-matrix transforms prefer auxiliary terminations with small reflection coefficients. When auxiliary terminations...
The concept of virtual auxiliary termination presented in 2006 APMC is further verified by an experiment of a three-port circulator to illustrate the remedy on solving its three-port scattering parameters from two-port measurements. In the results of first step, the reconstructed scattering parameters show apparent inaccuracy at certain frequency points. An indicator of accuracy is then studied. For...
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