Fiber weave effect, frequency dependent parameters and crosstalk on high speed interconnects

Critical measurements needs to be done for checking if a device performance is compliant. Composite substrates are mandatory to be considered in the design phase of high data rate interconnections. Frequency dependent (FD) algorithm has to be considered in a CAD tool to highlight transmission line parameters as frequency function. Critical aspects of crosstalk are evaluated in the present paper to allow correct dimensioning of a unbalanced and balanced interconnections based on evaluation of NEXT (Near End Crosstalk) and FEXT (Far End Crosstalk) parameters for the neighboring routes having in mind the fiber weave effect of glass epoxy materials. The frequency and time domain analyses will demonstrate the importance of correct model implementation for intersymbol interference (ISI) prevention, a critical aspect in signal quality evaluation.