A fully high-order finite-element simulation of scattering by deep cavities

Electromagnetic scattering from deep cavities is all important topic of research that has received much attention during the past decade. Recently, an efficient numerical technique has been developed for the analysis of scattering front a large, deep, and arbitrarily shaped cavity. This technique first subdivides the deep cavity into many thin layers along its depth and employs the finite element method (FEM) to discretize the field within each thin layer. In this paper, we present an even more efficient algorithm based on high-order curvilinear tetrahedral elements.