1. A method of modeling bond wires and corresponding pads in an integrated circuit (IC) package design for predicting noise effects of the bond wires and the corresponding pads in IC signal transmission paths, the method comprising: a) setting parameters related to an IC package layout geometry of a group of bond wires and their corresponding pads; b) sub-dividing said group of bond wires and their corresponding pads into regions, each region including a portion of each bond wire or its corresponding pad, and generating dissection planes for said regions comprising said bond wires; c) performing 3D simulations with a computer on said regions comprising said corresponding pads, and a 2D simulation for each dissection plane; d) constructing equivalent circuit models for said group of bond wires and their corresponding pads based on results from said 3D and 2D simulations; and e) inputting said equivalent circuit models into a circuit simulator, and modifying said layout to meet noise targets.