Engineered Electromagnetic Surfaces and Their Applications

Average Transition Conditions for Electromagnetic Fields at a Metascreen of Vanishing Thickness

“…cut out of the surface polarization and magnetization sheets located at z = ±δ respectively [the prime in (7) denotes that the term with m = n = 0 is to be omitted from the summation]. The situation is illustrated in Figure 3 for the array of magnetic dipoles; a similar configuration holds for the electric dipoles.…”

“…R ECENT years have seen a large body of research into the field of electromagnetic metamaterials, and in particular into metasurfaces, which are two-dimensional (surface) versions of engineered artificial magnetodielectric materials (see, e. g., [1]- [7]). Not only do metasurfaces offer the possibility of devices with lower loss than those based on bulk metamaterials, but they have found application in controlling reflection, transmission and polarization of waves; as filters, absorbers, sensors and beamformers; and performing the functions of focusing and field transformation.…”

Design and experimental validation of dual‐band circularly polarised horn filtenna

“…Design and numerical simulations: The filtering module proposed in [5] consists of two orthogonally crossed meandered slots with a subwavelength dimension drilled on a metallic screen. As shown in [9], by applying Babinet's principle to its complementary structure, i.e. two meandered metallic dipoles, the operative frequency of the filter can be determined as a function of its geometrical dimensions.…”