Extreme beam-forming with impedance metasurfaces featuring embedded sources and auxiliary surface wave optimization

G Xu, VG Ataloglou, SV Hum, GV Eleftheriades - IEEE Access, 2022 - ieeexplore.ieee.org
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 …

Unit cell design for aperiodic metasurfaces

J Budhu, N Ventresca, A Grbic - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
A technique is presented for the design of printed unit cells in aperiodic metasurface
environments. The method begins with a solved matrix equation governing electromagnetic …

Fast and accurate optimization of metasurfaces with gradient descent and the woodbury matrix identity

J Budhu, A Grbic - IEEE Transactions on Antennas and …, 2023 - ieeexplore.ieee.org
A fast metasurface optimization strategy for finite-size metasurfaces modeled using integral
equations is presented. The metasurfaces considered are constructed from finite, patterned …

Wide-angle beam-steering and adaptive impedance matching with reconfigurable nonlocal leaky-wave antenna

G Xu, GV Eleftheriades, SV Hum - IEEE Open Journal of …, 2022 - ieeexplore.ieee.org
We present a simple reconfigurable leaky-wave antenna (LWA) capable of fixed-frequency
continuous beam-scanning, along with an efficient optimization procedure with which its …

Patterned unit cell design in aperiodic metasurfaces

J Budhu, A Grbic - … Congress on Artificial Materials for Novel …, 2022 - ieeexplore.ieee.org
A technique is presented for the design of printed-circuit unit cells in aperiodic metasurface
environments. The method begins with a matrix equation governing electromagnetic …

Analytical Method for Metasurface-Based Cloaking Under Arbitrary Oblique Illumination

Y Zhang, H Fan, Y Zhang, L Ran, D Ye… - arXiv preprint arXiv …, 2023 - arxiv.org
The performance of antennas can severely deteriorate in the presence of adjacent
electrically-large scatterers. In this work, we use a conducting hollow cylinder to shield the …

Transparent, cascaded-sheet metasurfaces for field transformations

M Almunif, J Budhu, A Grbic - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
Integral equations are used to design transparent, cascaded-sheet, metasurfaces for
arbitrary field transformations. Commonly used techniques such as the local periodicity …

Design of 3D Conformal Metasurfaces

J Budhu, L Szymanski, A Grbic - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
A general synthesis technique for 3D conformal metasurfaces is presented which utilizes
integral equation-based modeling techniques and rapid optimization methods. The …

Wide-angle Beam-steering with Electronically-scanned Leaky Wave Antenna

G Xu, GV Eleftheriades, SV Hum - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
We discuss the design of a reconfigurable leaky wave antenna capable of one-dimensional
wide-angle beam-steering. It has a simple architecture consisting of a microstrip line loaded …