Results 61 to 70 of about 4,264 (215)

Sub‐THz Multifunctional Metasurfaces for Independent Transmission or Reflection Phase Manipulation

Advanced Optical Materials, Volume 14, Issue 4, 27 January 2026.
This article presents a rigorous analysis, design, and characterization of a novel sub‐THz metalens and reflective metasurface. Unlike bulky optical systems, the proposed thin, planar metasurface enables dual‐band full‐space wavefront control, via low‐loss transmission and reflection phase tuning, offering compact integration and improved ...
Bilal Ouardi, Orestis Koutsos, Olivier de Sagazan, Malo Robin, Ronan Sauleau, Antonio Clemente   +5 more
wiley   +1 more source

Broadband Single-layer E-Patch Reflectarray [PDF]

Radioengineering, 2017
E-shaped patch resonator is proposed for designing a novel broadband linearly polarized reflectarray for the first time. The element is made up of a shorted E-shaped patch with a polystyrene foam placed beneath it, and no dielectric substrate is needed ...
S. R. Lee, E. H. Lim, F. L. Lo
doaj  

A Scalable and Integrated Reconfigurable Intelligent Surface

Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.
A scalable X‐band reconfigurable intelligent surface is presented using one‐bit phase‐tunable unit cells with integrated FPGA control. The RIS supports fast, high‐speed reconfiguration through WiFi, LAN, and USB interfaces and can be scaled to multiple tiles. The design achieves over 20 dBi broadside gain and reliable 2D beam steering in both elevation
Zaid Akram, Mostafa Elsayed, Hira Hameed, Mirza Shujaat Ali, Jalil ur Rehman Kazim, Muhammad Ali Imran, Qammer H. Abbasi   +6 more
wiley   +1 more source

Analysis of dual-reflector antennas with a reflectarray as subreflector [PDF]

, 2008
In this paper, a modular technique is described for the analysis of dual-reflector antennas using a reflectarray as a subreflector. An antenna configuration based on a sub-reflectarray and a parabolic main reflector provides better bandwidth than a ...
Leandro De Haro, Encinar Garcinuño, José Antonio, Haro, Leandro de, Manuel Arrebola, Jose A. Encinar, Haro Ariet, Leandro de, Arrebola Baena, Manuel, Arrebola, Manuel   +7 more
core   +1 more source

Wideband Circularly Polarized Dielectric Reflectarray Using Sequential Rotation of L‐Shaped Dielectric Resonators

Electronics Letters, Volume 62, Issue 1, January/December 2026.
An asymmetric L‐shaped dielectric Pancharatnam–Berry phase unit cell is proposed to enable CP‐preserving reflection with an intrinsic 180 phase difference between the orthogonal linear components. ABSTRACT In this work, we detail the design and experimental validation of a wideband circularly polarized dielectric reflectarray.
Kitch Mensah‐Bonsu, Binbin Yang
wiley   +1 more source

Broadband Single-Layer Reflectarray Antenna Employing Circular Ring Elements Dented With Sectorial Slits

IEEE Access, 2019
A broadband single-layer reflectarray antenna comprising circular ring elements dented with sectorial slits is presented. The sizes of circular rings are fixed and equal for all elements, while the variation of the reflected phase is obtained by varying ...
Huiting Yu, Lu Guo
doaj   +1 more source

Geometric Phase Metasurface for Lens Antenna System With High Polarisation Purity and Efficiency

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This work presents a millimetre‐wave antenna–metalens system based on the Pancharatnam–Berry phase principle, operating efficiently from 82 to 95 GHz. The system achieves high directivity (up to 34.7 dB), excellent polarisation purity (AR < 2 dB) and aperture efficiency exceeding 30%. The same metalens is also characterised at 75 and 105 GHz, where the
Alexia Moreno‐Peñarrubia, Sheyly Ortiz‐Reyes, Jorge Teniente, Sergei Kuznetsov, Bakhtiyar Orazbayev, Miguel Beruete   +5 more
wiley   +1 more source

Design of a High‐Gain H‐Shaped 1‐Bit Linearly Polarised Reconfigurable Intelligent Surface for Single and Multibeam Scanning

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This study introduces a compact H‐shaped 1‐bit linearly polarised Reconfigurable Intelligent Surface (RIS) prototype, specifically engineered for high‐gain and beam‐scanning applications at 5.1 GHz. The fabricated 20 × 20 RIS array exhibited a gain of 23.1 dBi, a scanning capability of ± 60° and an aperture efficiency of approximately 57%, as validated
Rocky Chakma, Jie Tang, Zijun Yan, Yongan Feng, Guohao Chen   +4 more
wiley   +1 more source

Reflectarray Antenna for Simultaneous Near-Field Fronthaul and Far-Field Backhaul Links in Next 5G FR2 Femtocells

IEEE Open Journal of Antennas and Propagation
This work presents a reflectarray-based base station antenna to integrate both backhaul (BH) and fronthaul (FH). The reflectarray operates at 28 GHz in dual linear polarization, using one polarization for the BH and another for the FH. The BH is a pencil
Alvaro F. Vaquero, Borja Imaz-Lueje, Marcos R. Pino, Manuel Arrebola   +3 more
doaj   +1 more source

X-band reflectarray antenna with arbitrarily (elliptical) polarization for high-power microwave applications

Engineering Science and Technology, an International Journal, 2020
An X-band high-power microwave antenna with arbitrarily (elliptical) polarization is proposed and investigated in this paper. The proposed antenna is founded on a reflectarray composed of printed elements and excited by the microwave energy in the ...
Sahar Abdi Tazehabadi, Shahrokh Jam
doaj   +1 more source