METHOD FOR CONTROLLING IMPEDANCE

摘要

A method for controlling impedance of a multi-layer PCB includes establishing a geometric model using simulation software according to a structure of the multi-layer PCB. A first variable (S) and a second variable (W) are respectively defined in the simulation software. The variable S is set equal to a first desired value. An impedance (R) of the transmission line is set equal to a second desired value. The variable W is set to a value according to a relationship between R, S, and W.