Accurate high frequency lossy model of differential signal line including mode-conversion and common-mode propagation effect

摘要

The loss in multilayer printed circuit boards (PCB) becomes a crucial problem and lacks precise models in high-speed interconnections such as the SerDes channel. Moreover, unbalanced and discontinuous structures generate undesirable mode-conversion, differential-to-common mode and common-to-differential mode. We have propose an accurate and efficient differential line model where all of the mode-conversion, common-mode propagation and frequency-dependent loss are taken into consideration over the GHz frequency range.