Metasurfaces are thin two-dimensional metamaterial layers that allow or inhibit the
propagation of electromagnetic waves in desired directions. For example, metasurfaces …

The dispersion characteristics of a glide-symmetric holey periodic surface are investigated,
with special emphasis on a detailed study of its stopbands. The unit cell is modeled as a …

Tunable THz antennas based on a single unpatterned graphene sheet placed inside a
grounded dielectric multilayer are studied with the aim of characterizing their performance in …

We present a Bessel-beam launcher based on a leaky radial waveguide consisting of a
capacitive sheet over a ground plane that supports higher-order leaky modes. A propagating …

In a previous work, we derived optimum conditions for the design of finite-size 1-D
unidirectional leaky-wave antennas (LWAs) in the general case. The bandwidth and the …

In this work, we analyze in detail the modal properties of a graphene-based planar
waveguide (GPW) in the terahertz (THz) frequency range. The structure consists of a …

Ces dernières années, la thématique des métasurfaces est devenue un sujet de recherche
en pleine expansion dans plusieurs domaines de l'ingénierie et de la physique appliquée …

Leaky‐wave antennas (LWAs) represent a class of radiators whose features can efficiently
be described in terms of an electromagnetic traveling wave with complex wavenumber …

Closed-form expressions are derived for the number of surface waves propagating along a
general multilayered structure with media having positive material parameters. The …

We propose and study a new type of double-layer holey structure with a wide bandgap. The
structure can have glide symmetry in two orthogonal directions but not 2-D glide symmetry …