The ever increasing number of wireless devices and systems has led to a crowded spectrum
and increased the demand for versatile and multi-functional wireless apparatuses. Recently …

Metasurfaces are ultrathin, two-dimensional structures composed of periodic or quasi-
periodic arrays of sub-wavelength scatterers. They possess the unique ability to …

In this article, we review the topic of Huygens' metasurfaces with an emphasis on existing
and emerging applications at microwave frequencies. Huygens' metasurfaces have …

A general technique for synthesizing both planar and conformal beamforming metasurfaces
is presented that utilizes full-wave modeling techniques and rapid optimization methods …

We present the end-to-end design of compact passive and lossless metasurface antennas
with integrated feeds. The complete low-profile system consists of a single-layered reactive …

Huygens' metasurfaces (HMSs) have demonstrated the ability to tailor electromagnetic
wavefronts with passive low-profile structures. The fundamental constraint enabling passive …

We show that the use of the electromagnetic inverse source framework offers great flexibility
in the design of metasurfaces. In particular, this approach is advantageous for antenna …

An accurate equivalent circuit model (ECM) for general multiwire multiorder printed circuit
board (PCB) metagratings (MGs) is developed. The effective impedances of the grating …

In recent years, new functionality and unprecedented wavefront control has been enabled
by the introduction of bianisotropic metasurfaces. A bianisotropic metasurface is …

A method based on electromagnetic inversion is extended to facilitate the design of passive,
lossless, and reciprocal metasurfaces. More specifically, the inversion step is modified to …