The transmission properties of reactance-loaded stratified dielectric slabs,especially of reactance-loaded radome wall geometries are analyzed employing Finite Element Method(FEM) in combination with Floquet theorem.FEM approach is formulated and the relevant C++ codes are developed to deal with the stratified dielectric slabs sandwiched by periodical metal strips of arbitrary cross sections.The scattering property of a PEC ended dielectric slab with metal strips of rectangular cross section is investigated...