Results 41 to 50 of about 409 (184)

A 1-Bit Electronically Reconfigurable Reflectarray Antenna in X Band

IEEE Access, 2019
In this paper, a fully electronically reconfigurable reflectarray antenna that has 14×14 reflecting elements and features a higher aperture efficiency was designed, fabricated, and tested.
Hai Zhang, Xuxiang Chen, Zhenglong Wang, Yuehe Ge, Jixiong Pu   +4 more
doaj   +1 more source

Do We Really Need Frequency‐Selective Surface and Metasurface Reflectors for Antenna Gain Enhancement, or Are Metallic Reflectors Enough?

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Enhancing antenna gain remains a key requirement in modern wireless systems, particularly with the rapid evolution of 5G, emerging 6G networks, satellite links, and high‐resolution radar. Recent research trends increasingly rely on frequency‐selective surfaces (FSSs) and metasurface‐based reflectors, which offer precise electromagnetic wave control ...
A. J. A. Al-Gburi, Mohammad Rezwan Habib
wiley   +1 more source

Wideband Single‐Layer Reflectarray Antenna for Millimeter‐Wave 5G Communications

Journal of Sensors, Volume 2026, Issue 1, 2026.
The rapid evolution of intelligent applications has driven the demand for high‐performance antenna systems. Reflectarrays (RAs), also referred to as planar reflectors, have emerged as a promising solution for modern wireless and satellite communication systems due to their beam‐steering capability and high‐gain characteristics.
S. D. Khan, M. I. Abbasi, I. M. Ibrahim, N. H. Sulaiman, M. H. Dahri, M. A. Humayun, Hela Elmannai, Deepali   +7 more
wiley   +1 more source

Tunable Reflectarray Cell for Wide Angle Beam-Steering Radar Applications

Journal of Electrical and Computer Engineering, 2013
An electronically tunable reflectarray element is proposed in this work to design beam-steering antennas useful for radar applications. A reduced size reflectarray unit cell is properly synthesized in order to extend the antenna beam scanning ...
F. Venneri, S. Costanzo, G. Di Massa
doaj   +1 more source

Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems

Advanced Optical Materials, Volume 13, Issue 33, November 25, 2025.
The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley   +1 more source

Design and Analysis of Square and Torus ring Shaped Material - Unit cells for X-Band Reflectarray [PDF]

EPJ Web of Conferences
A Reflectarray antenna is considered a hybrid antenna fed with microstrip, and elements of the antenna are designed to comprise features of both reflector and phased array antennas.
Chitra S., Aishwarya L. K., Hema R., Sundararajan M.   +3 more
doaj   +1 more source

Broadband, Single‐Layered, and Optically Transparent Reflective Phase‐Shifting‐Surface Array for Beam Manipulation and Enhanced Wireless Communications

Advanced Electronic Materials, Volume 11, Issue 9, June 2025.
A novel optically transparent reflectarray design approach based on multi‐resonant phase‐shifting elements with minimal fine metal line (FML) structures and low‐loss single‐layer cyclic olefin copolymer (COC) substrate is proposed. The design achieves exceptional antenna performance while ensuring high optical transparency, validated through wireless ...
Longzhu Cai, Jianjing Zhou, Jiaqi Zhou, Lei Zhang, Zhi Hao Jiang, Wei Hong   +5 more
wiley   +1 more source

Multi-Beam Circular Polarized Reflectarray on Parabolic Reflector by Variable Rotation Technique

Applied Sciences, 2019
Multi-beams antennas are currently being used for direct broadcast satellite, personal communication satellite, military communication satellite, and high-speed internet applications.
Álvaro Somolinos, Rafael Florencio, Iván González, Felipe Cátedra   +3 more
doaj   +1 more source

Single‐Layer Reflectarray Providing Broadband Linear‐to‐Circular Polarization Conversion

Microwave and Optical Technology Letters, Volume 67, Issue 2, February 2025.
ABSTRACT This paper introduces a single‐layer reflectarray (RA) design capable of converting incoming linearly polarized waves into outgoing circularly polarized ones while focusing the beam. The design employs nonresonant unit cells, extending the classical concept of meander‐line polarizers.
Samara Gharbieh, Renaud Loison, Akil Jrad, Ali Harmouch, María García‐Vigueras   +4 more
wiley   +1 more source

1‐Bit reconfigurable reflectarray antenna with T‐shaped parasitic structure

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
An electronically 1‐bit reconfigurable reflectarray antenna (RRA) with wide‐angle beam‐scanning and high efficiency performance is presented. A 180‐degree phase difference can be generated by controlling the state of the PIN dipole in the configurable element comprising a double split ring (DSR) patch and two T‐shaped parasitic structures.
Sen Li, Yang Cai, Hong Ma, Lijun Bu, Siyu Qi, Yufan Cao, Tao Wu   +6 more
wiley   +1 more source