We review the basic physics and applications of a special class of planar metamaterials,
often called metasurfaces, which are composed of optically thin and densely packed planar …

Circuit analysis of frequency selective surfaces is reviewed with the aim to underline range
of validity of different models and their advantages in terms of simplicity and physical insight …

The transmission and reflection properties of frequency-selective surfaces (FSSs) are
evaluated through a simple and accurate first-order circuit approach. The approximate …

An effective synthesis procedure for planar antennas realized with nonuniform metasurfaces
(MTSs) excited by a point source is presented. This synthesis potentiates previous …

Simple analytical formulas are introduced for the grid impedance of electrically dense arrays
of square patches and for the surface impedance of high-impedance surfaces based on the …

A simple procedure for designing a sinusoidally-modulated reactance surface (SMRS) that
radiates at an arbitrary off-broadside angle is outlined. The procedure allows for nearly …

Metasurfaces constitute a class of thin metamaterials, which are used from microwave to
optical frequencies to create new antennas and microwave devices. Here, we propose the …

Different kinds of spiral planar circularly polarized (CP) antennas are presented. These
antennas are based on an interaction between a cylindrical surface-wave excited by an …

Theory, design, realization and measurements of an X-band isoflux circularly polarized
antenna for LEO satellite platforms are presented. The antenna is based on a metasurface …

A metasurfing concept is demonstrated and applied in the design of Luneburg lens
antennas. Using an array of size-varying circular patches on a dielectric substrate inside a …