A conformal mesh for efficient planar electromagnetic analysis

A planar electromagnetic analysis can provide faster analysis by using larger subsections at the cost of reduced accuracy. However, even if both rectangular and triangular subsections are used, large subsections are not practical for complicated curving planar circuits. This paper describes a method for joining small subsections so that the large subsections so formed can follow the arbitrarily curving edges of a complicated circuit while still inherently including the high edge current. Using such conformal subsections, non-Manhattan geometries can be analyzed efficiently and accurately. This is especially important for continuously curving geometries (like circular spiral inductors), which cannot be efficiently meshed using rectangular and triangular subsections. These conformal subsections retain nearly all the accuracy of small subsection size while also realizing the speed of large subsections, even for complicated geometries.