Crosstalk analysis on printed circuit board by means of wavelets

in the identification problems of the source lines of crosstalk on printed circuit boards, the requirements on the electromagnetic interference are specified in voltage which is converted to a maximum distance. Only tracks up to the specified maximum distance are considered for the purpose of disturbance line identification. Unfortunately, tracks beyond the specified maximum distance can result in large crosstalk. This paper proposes a wavelet-based approach which takes into account all tracks that are susceptible to produce interferences regardless the separating distance between the coupled tracks. A wavelet-decomposition of the disturbed signal allows to characterize the source of disturbance by means of the energy of the detail coefficients of the decomposition which makes easier the identification of the source of disturbance.