A wavelet-based approach for disturbance line identification in printed circuit boards

The problem of identifying disturbance lines in printed circuit boards is addressed. Identification is achieved by estimating the disturbance frequency and the separation distance between the coupled lines. Frequency estimation uses a wavelet coefficients thresholding method to reconstruct the interference caused by the disturbance line. The separation distance is computed using two empirical laws based on physical ground and verified by simulation. The performance of the proposed method is illustrated by simulation results.