The precise integration method is employed to analyze the transient response of frequency-dependent interconnects.This method starts from frequency-domain telegrapher's equations and the time-domain equations including convolutions are obtained by inverse Laplace transform.After the discretization with respect to the space coordinate(

x

)

the spatial derivatives are eliminated and replaced by finite differences

and then

the precise integration method is used.The truncation error is efficiently decreased by interlacing the voltage and current nodes along the

x

-axis.This is in contrast to the classical methods where the samples of both voltages and currents are taken at the same points.In addition

traditional numerical convolution is replaced by recursion algorithm in the computation of inhomogeneous items in the ord

inary differential equations

such that the computational efficiency rises greatly.This method needs not decouple the telegrapher's equations for multiconductor transmission lines

and is also suitable to nonuniform coupled transmission lines.Numerical examples are presented to demonstrate the accuracy and stability of the proposed method.