METHOD AND DEVICE FOR ELECTROMAGNETIC FIELD ANALYSIS OF CIRCUIT BOARD, AND CIRCUIT BOARD AND ITS DESIGN METHOD

摘要

An electromagnetic field analyzing method includes a step (S1) of initializing a conductor pattern form in each layer of a multilayer circuit board, a step (S2) of initializing a port for signal input/output from/to outside in the conductor pattern, a step (S3) of two-dimensionally dividing the multilayer circuit board into a plurality of areas, steps (S4a, S4b) of setting an additional port on the edge of the new conductor pattern formed by the area division, steps (S5a, S5b) of setting individual analysis conditions for the initial port and the additional port, steps (S6a, S6b) of conducting the electromagnetic field analysis for every divided area on the multilayer circuit board based on the corresponding analysis conditions, and a step (S8) of combining the results of electromagnetic analysis on the divided areas and obtaining the electromagnetic analysis result on the entire board. In this way, an electromagnetic analysis on a multilayer circuit board can be conducted in a short time, greatly reducing the time and cost needed for circuit board design.