Results 51 to 60 of about 1,317 (206)

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

On the Phase Selection of Millimeter Wave Quantized Reflectarrays [PDF]

, 2017
Microstrip printed reflectarrays are becoming a potential replacement of parabolic reflector and phased array antennas due to their simple design, low cost and ease of manufacture to attain high gain and wide angle beam pointing at millimeter waves (mm ...
Ahmad, Ghulam, Loh, T.H., Underwood, Craig, Brown, Tim   +3 more
core  

Wideband Reflectarray Antennas in the Microwave Range

Известия высших учебных заведений России: Радиоэлектроника
Introduction. The development of broadband reflectarray antennas for the microwave band remains a key challenge in the context of stricter requirements imposed on telecommunications systems, including 5G/6G networks and satellite communications.
L. М. Liubina, S. V. Ballandovich, G. A. Kostikov, Yu. G. Antonov   +3 more
doaj   +1 more source

PERFORATED NANOANTENNA REFLECTARRAY

Progress In Electromagnetics Research M, 2013
This paper presents a design of perforated nanoantenna re∞ectarray. The use of metallic nanostructures made of Silver and/or Gold at appropriate wavelength cause fascinating unusual electromagnetic efiects. Re∞ectarray consists of an array of unit cell made from Silver is investigated.
Saber Helmy Zainud-Deen, Hend Abd El-Azem Malhat, Shaymaa Mostafa Gaber, Kamal Hassan Awadalla   +3 more
openaire   +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

Reconfigurable Reflectarrays: Design, Analysis and Fabrication

, 2015
Reflectarray antennas combine the advantages of both reflector and phased array antennas. Therefore, they offer low-loss, low-cost solutions for the high gain, beam steering and beam shaping applications.
AYDIN ÇİVİ, HATİCE ÖZLEM
core   +1 more source

Open Resonator System for Reflectarray Elements Characterization

International Journal of Antennas and Propagation, 2012
An open resonator system is proposed in this work to study the phase behavior of reflectarrays cells. The characterization of the single reflectarray element is performed by assuming a Gaussian plane wave normally incident on an infinite periodic array ...
G. Di Massa, S. Costanzo, O. H. Moreno
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

The Evolutions of Reflectarray Antennas for Small Satellites: Navigating to Design, Fabrication, and Performance Techniques

IEEE Access
Classical antennas in small satellites such as reflectors and phased arrays have encountered significant challenges, including restricted beam steering capabilities and complex deployment mechanisms.
Jasim Uddin, Harvinder Sing Nagi, Benjamin Falkner, Reza Akhavan, Ginu Rajan, Jon Platts, Chaminda T. E. R. Hewage, Leshan Uggalla   +7 more
doaj   +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