On the realization of the generalized soft-and-hard surface

Boundary conditions generalizing those of the soft-and-hard surface were re cently introduced as an example of an ideal boundary on which the complex P oynting vector cannot have a normal component. It was shown that under such conditions a boundary surface can be used as a polarization transformer fo r a reflected plane wave. The question of how to realize the generalized so ft-and-hard surface is considered here. Various possibilities are discussed based on a medium interface, a slab of an anisotropic medium, and a config uration of antennas.