Common-mode currents in transmission line structures caused by asymmetric sources or load impedance

Abstract

This paper describes decomposition using ideal structure extraction methods (ISEM) while asymmetric sources or load impedance is given, which makes the symmetric mode model (SMM) only contain differential-mode currents and the asymmetric mode model (AMM) only contain common-mode currents. With the assistance of the moment method, numeral computation of these typical structures gives valuable results.