Patent ID: 7313509

Claim:
A simulation method for making a noise analysis based on parameters including a conductor resistance which takes skin effect into consideration, comprising: calculating a first resistance of a conductor having a largest cross-sectional area of a plurality of conductors; obtaining a predetermined pitch which saturates a diagonal component of a second resistance of a conductor with reference to the first resistance and makes the diagonal component substantially constant, by varying a pitch of the conductors; calculating at least one of the parameters for each pitch with respect to one of the pitches larger than or equal to the predetermined pitch and the pitches smaller than the predetermined pitch, and substituting the at least one parameter calculated for said one of the pitches with respect to the other of the pitches larger than or equal to the predetermined pitch and the pitches smaller than the predetermined pitch; omitting calculations for at least one parameter that saturates and becomes approximately constant when a pitch between the conductors becomes greater than or equal to the predetermined pitch; and outputting calculation results of the calculating at least one of the parameters which take the skin effect into consideration.