Patent Document ID: 7643980
Application ID: 11342750
Patent Flag: 1

Claim One:
1. An electromagnetic field analysis apparatus, comprising: an information input device configured to input information regarding wirings and components of an analysis object; a modeling device configured to generate a simulation model of the analysis object based on the input information regarding the wirings and the components of the analysis object; a model simplification device configured to simplify the simulation model into a simplified simulation model by dividing the analysis object according to the simulation model into a plurality of cells and thinning out, when a plurality of elements are included in a cell, the plurality of elements included in the cell; an electromagnetic field distribution calculation device configured to calculate an updated electromagnetic field distribution of the analysis object according to the simplified simulation model; and an output device configured to output a calculation result of the updated electromagnetic field distribution of the analysis object according to the simplified simulation model, wherein: the electromagnetic field analysis apparatus includes hardware, the elements, which are thinned out by the model simplification device, are vias of the analysis object, and the model simplification device is configured to set pairs of a current input terminal and a current output terminal of each component of the analysis object according to the simulation model, is configured to set an interval of meshes defining a size of each cell, is configured to set an impedance calculation area for each pair of a current input terminal and a current output terminal, is configured to calculate impedances of all current paths passing through vias in each impedance calculation area, and is configured to thin out vias included in each cell in the impedance calculation area such that a via belonging to a current path having the lowest impedance among current paths passing through the vias in the cell remains.