Estimating high speed circuit interconnect performance

Abstract

A technique requiring a minimum of computational effort is presented for providing engineering estimates of the effect of package mismatch, line loss, and crosstalk. The technique entails modifying the Fourier series of a symmetrical trapezoid (which serves as a reasonable approximation to an actual digital signal) by transfer functions representing mismatch, loss, or crosstalk. Transfer functions are introduced which utilize frequently-domain data (measured or calculated) and provide the necessary transition to the time-domain performance. Sample calculations are given along with an interpretation of the results.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>