Results 51 to 60 of about 140,738 (213)

Analysis and Design of Reflectarray Antennas Based on Delay Lines: A Filter Perspective

IEEE Access, 2020
The analysis and design of reflectarray (RA) antennas based in delay lines is introduced for the first time from a filter perspective. To this purpose, each unit-cell of the RA is considered as a network composed of two ports, one being the delay line ...
Jiawei Zang, Eduardo Carrasco, Xuetian Wang, Alejandro Alvarez-Melcon, Juan Sebastian Gomez-Diaz   +4 more
doaj   +1 more source

Dipole‐Quadrupole Model and Multipole Analysis of Resonant Membrane Metasurfaces

Laser &Photonics Reviews, Volume 20, Issue 12, 18 June 2026.
Membrane metasurfaces, arrays of holes in a dielectric membrane, are appealing because they require no substrate and allow access to resonant near‐fields. However, developing a comprehensive theoretical description for them remains challenging. We introduce a semi‐analytical dipole‐quadrupole approach to analyze their resonant spectra at arbitrary ...
Izzatjon Allayarov, Andrey B. Evlyukhin, Antonio Calà Lesina   +2 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

A Dual Ka/Q-Band Reflectarray

Известия высших учебных заведений России: Радиоэлектроника, 2022
Introduction. Duplex satellite communication is commonly arranged using two spaced frequency bands, with one band receiving and the other band transmitting signals to a satellite.
S. V. Polenga, A. A. Erokhin, R. O. Ryazantsev, A. D. Poligina, R. M. Krylov, E. A. Litinskaya, E. R. Gafarov, A. M. Aleksandrin, Yu. P. Salomatov, I. Yu. Danilov   +9 more
doaj   +1 more source

Millisecond‐Switching Dual‐Band/Dual‐Polarization Ka‐Band Wavefront Control Enabled by a Complementary Liquid‐Crystal Metasurface

Advanced Materials Technologies, Volume 11, Issue 4, 19 February 2026.
An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim, Donggeun An, Hyunjae Shin, Youngno Youn, Wonbin Hong   +4 more
wiley   +1 more source

Modified Phoenix Cell for Microstrip Reflectarray Antennas [PDF]

, 2013
This paper presents a newly developed modification to the structure of a linearly polarized reflectarray antenna cell, called Phoenix [1]. The idea of Phoenix is based on employing multi-resonators to improve the antenna bandwidth characteristics ...
Hammad, Hany, Ibrahim, Sarah
core   +2 more sources

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

Terahertz broadband reflectarray with parallel elliptical dipoles

, 2015
A resonant element consisting of three parallel elliptical dipoles is proposed for the design of a broadband reflectarray at 1 THz. The phase response of the proposed radiating element is reasonably linear and its gradient is constant over a wide ...
Niu, T., Tiaoming Niu, Christophe Fumeaux, Fumeaux, C., Withawat Withayachumnankul, Withayachumnankul, W.   +5 more
core   +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

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