Patent ID: 6163762
Filing Date: 2000-12-19
Classification: G06F,G06T

Abstract:
A method for determining a current distribution in a planar circuit having a curved boundary, comprising the steps of:(a) superimposing a grid consisting of a plurality of rectangular cells over a conductive portion of the planar circuit;(b) forming at least two subsections, each comprising a plurality of the rectangular cells, corresponding as closely as possible to the boundary of the planar circuit, without modifying any characteristic of the grid;(c) grouping all the cells within each subsection into a plurality of strings, each cell in each of the plurality of strings being related such that if a current flowing through one cell in a string is assumed, the current flowing through every other cell in that string is determinable from that one cell's position in the string;(d) assigning a current value to each cell based upon both its position in a string and that string's position within a subsection of the circuit, the current varying piece-wise linearly along the length of each string;(e) determining all pairwise couplings between subsections;(f) storing the couplings in a matrix;(g) inverting at least a portion of the matrix;(h) using the inverted portion of the matrix to determine the current distribution in the circuit.