Parasitic influence, on signal integrity, of several victim lines placed asymmetrically beside and symmetrically at both sides of an attacker interconnect and mutually

Abstract

Far end crosstalk on victim lines located near an aggressor as well as rise time and propagation delay at the end of the attacker are evaluated. It is done thanks to a home made software based on full wave electromagnetic finite element and transient analysis simulation. These investigations are carried out when the aggressor lossy interconnect of less than one micron square area is symmetrically and asymmetrically placed in an arrangement of three, five and eight copper lossy lines, in case of low, medium and strong mutual effects. Our signal integrity points out that two neighbour lines on both sides of an active interconnect (i.e. the aggressor) are a good compromise to understand more complicated situation on greatest number of unintentionally coupled interconnects. We have verified this fact even in case of small spacing or high permittivity material which filled partially the spacing between interconnects (i.e. strong mutual effects).