A wavelet-based approach for crosstalk frequency estimation in printed circuit boards

This paper proposes a wavelet-based approach for frequency estimation of the source of interference in a PCB. The frequency constitutes a relevant information that characterizes the disturbance signal and may lead to the identification of the source of disturbance, we consider two parallel lines on a PCB. A high frequency digital signal is propagating down the first track which induces an electromagnetic interference that affects the signal propagating down the second line. The estimation procedure is based only on the disturbed signal, already available, from which the interference signal is reconstructed by performing a wavelet decomposition at level one. The estimated interference is then appropriately processed to determine its frequency.