Method for extracting the equivalent model of couple transmission line in high-speed circuit

摘要

A method of extracting an equivalent model of couple transmission line in high-speed circuit includes the steps of: using signals in an even mode and odd mode to excite the couple transmission line respectively; obtaining voltages by measuring the couple transmission line in the excitation of the signals in the even mode and the odd mode respectively; based on the measured voltages, obtaining impedance profiles of a lumped circuit respectively in the even mode and the odd mode by layer peeling transmission line synthesis; obtaining circuit parameters of the lumped circuit by the genetic algorithm; and extracting an equivalent model of the couple transmission line according to the relationship of the excitation of the even mode and odd mode.