Abstract-The Huygens subgridding (HSG) relies on the connection of two FDTD grids by means of Huygens surfaces. An earlier work has presented that the Huygens surfaces can be reduced to one sheet of current in place of the usual two sheets. This letter shows that the resulting simplified HSG may be at the origin of inaccuracy in the computed results because of the singularity of the field at edges of perfect electric or magnetic conductors. The difficulty can be easily overcome in two dimensions but not easily in three dimensions where it is preferable to use the one sheet implementation only for the outer Huygens surface.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.