Patent ID: 7158921

Claim:
An electromagnetic field analyzer comprising: dividing means for dividing form data as an analysis object into coarse elements and fine elements; forming means for forming a matrix defining an electromagnetic field vector of the coarse elements divided by the dividing means related to an electromagnetic field vector of the fine elements; and calculating means for calculating an approximate solution of the electromagnetic field vector of the fine elements by applying an iteration method of simultaneous linear equations while referring to the matrix formed by the forming means; wherein the forming means forms the matrix by expressing the elements of electromagnetic field vectors at the sides at a fine element using an interpolation function in the coarse elements; and when the length of a side l i of the fine element is |l i |, an interpolation function showing a relationship between the electromagnetic field at position x of the side l i of the fine element and the electromagnetic field at a side j of the coarse element is N j C (x), and the tangential vector of the side l i of the fine element is t i , the forming means forms a matrix P ij by using the following expression: P i ⁢ ⁢ j = 1  l i  ⁢ ∫ l i ⁢ N j C ⁡ ( x ) · t i ⁢ ⁢ ⅆ l ⁢ . ( 14 )