Results 51 to 60 of about 435 (182)

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

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

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

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

Beam Shaping of a Dual-Reflector Antenna Using a Reflectarray as Subreflector and Embedded Unit Cell Patterns

IEEE Open Journal of Antennas and Propagation
This work proposes a phase-only synthesis technique for shaping the beam of a circularly polarized dual-reflector antenna with a subreflector consisting of a reflectarray and a main parabolic reflector.
Marzieh Mehri Dehnavi, Jean-Jacques Laurin   +1 more
doaj   +1 more source

A Ka-Band High-Efficiency Transparent Reflectarray Antenna Integrated With Solar Cells

IEEE Access, 2018
A transparent reflectarray antenna integrated with solar cells is presented for satellite communications in the paper. The electromagnetic characteristics of solar cells at Ka-band are investigated, and a sub-wavelength X-shaped dipole element is ...
Wenxing An, Lin Xiong, Shenheng Xu, Fan Yang, Hai-Peng Fu, Jian-Guo Ma   +5 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

Lightweight Single Planar Microstrip Array Fed Dual-Polarized Dual-Band Reflectarray Antenna for GBS Uplink and Downlink Satellite Communication

IEEE Access
A lightweight dual-band dual-polarized (DBDP) single-layer reflectarray antenna is designed and investigated in this paper for global broadcast service (GBS) in K and Ka-bands (satellite downlink frequency of 20.77 and uplink frequency of 30.49 GHz).
Sukhendu Jana, Anumoy Ghosh, Arijit Majumder, Sarosh Ahmad, Adnan Ghaffar, Muhammad Faheem   +5 more
doaj   +1 more source

A Frequency‐Reconfigurable Dual‐Band Nematic Liquid‐Crystal Reflectarray Antenna With Angular Beam Separation for Satellite Communication

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This paper presents a frequency‐reconfigurable dual‐band nematic liquid‐crystal (LC) reflectarray antenna with angular beam separation for satellite communication. Dual‐band operation at 12 and 28 GHz is achieved through voltage‐controlled reconfiguration of the LC layer.
Hsi‐Hsir Chou, Ping‐Hsun Tsai, T. D. Wilkinson, Wing‐Kit Choi   +3 more
wiley   +1 more source

Anisotropic Metallic Grating With an Inhomogeneous Superstrate as a Broadband Reflective Polarization Converter: Design and Fabrication

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
An efficient and broad‐band reflective microstrip polariser converter is proposed that converts linear polarization plane waves to circular polarization ones. It is experimentally shown that the designed device converts the LP plane‐waves to a CP one within 7.2∼12.6 GHz with 3‐dB AR bandwidth = 54.5%.
Mahdieh Bozorgi, Mahmood Rafaei‐Booket
wiley   +1 more source