Crosstalk reduction by matrix matching

Abstract

Based on the recognition that propagating near-end crosstalk is the primary source of crosstalk noise in short unterminated channels we describe and demonstrate an approach to improve the signal integrity on such channels significantly. The basic physics and Norton formulation of crosstalk reduction by matrix matching are described. We then show large potential gains for two on-package interconnect application examples. A nominal strip line configuration based on standard package design rules and including realistic modeling assumptions yields 50.4% reduced channel power at iso-performance. The same design can be converted to microstrip without degrading eye height and channel power.