Cyclostationary Evaluation of Voltage Crosstalk Between PCB's Transmission Lines

Abstract

Theoretical and experimental evaluation of the crosstalk between transmission lines of the printed circuit boards (PCB) induced by the electromagnetic interference emitted by the random signals with cyclostationary properties are presented. The quantitative analysis of the crosstalk between two adjacent lines was evaluated by the bit error ratio (BER) of the communication link. The interference signal measured by the real time digital oscilloscope was characterized as a cyclostationary stochastic process. The cyclic averaging of the induced interference reveals the instantaneous periodic power corresponding to the variance of the probability density function (PDF). The PDF was obtained from the amplitude histograms constructed for each instant of time over the bit duration. Experimental evaluation of the BER for the communication link influenced by the voltage crosstalk was performed.