Patent ID: 6397158
Filing Date: 2002-05-28
Classification: G01R

Abstract:
A method for determining the value of at least one capacitance required to be placed in a conductive path on a printed circuit board, the method comprising:determining a target signal spectrum for the conductive path; determining an actual signal spectrum for the conductive path; comparing said actual signal spectrum against said target signal spectrum to determine whether a voltage exists on said conductive path which is higher than a maximum allowed voltage; performing, if said actual signal spectrum is in amplitude versus time form, for each time having a voltage which is higher than the maximum allowed voltage on said conductive path, a fourier transform on said amplitude versus time data, resulting in amplitude versus frequency data; determining at least one frequency having an amplitude which significantly contributes to said out of tolerance condition; and computing for at least one of said at least one frequencies, a value of capacitance which would diminish the amplitude of at least one of said at least one frequencies to a value which is within desired tolerances.