Results 71 to 80 of about 4,866 (225)

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

Modern Reflectarray Antennas: A Review of the Design, State-of-the-Art, and Research Challenges

IEEE Access
As communication technology advances, high-gain antennas are being investigated for a variety of long-distance applications. One such high gain antenna is reflectarray, it has combined advantageous characteristics of a reflector and phased array antennas.
J. Annal Joy, Sandeep Kumar Palaniswamy, Sachin Kumar, Malathi Kanagasabai, S. Bashyam, Mousa I. Hussein   +5 more
doaj   +1 more source

An Inhomogeneously‐Loaded Diaphragm in a Microwave Rectangular Waveguide

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
This study presents a method to control resonant transmission in a dielectric‐loaded slot within a thick conducting diaphragm embedded in a rectangular waveguide. By introducing a gap with a different dielectric constant, we can manipulate the overlap of Fabry–Perot and Fano resonances, demonstrating potential applications as a bandpass filter with a ...
Abdulaziz H. Haddab, Edward F. Kuester
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

Fully Controllable Beam‐Steering 1‐THz Transmitarray Using Graphene–Metal Hybrid Metasurface

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
The switchable hybrid graphene–metal transmiting metasurface. The transmitarray composed of the proposed metasurface, for beam steering, controlable by a microprocessing unit. ABSTRACT In this paper, a 1‐THz graphene–metal‐hybrid transmissive metasurface is proposed, which consists of six layers.
P. Hosseini, H. Oraizi
wiley   +1 more source

Wide‐Angle Scanning Array With Sidelobe Reduction Using Single Substrate Layer

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
Without the need for amplitude weighting, the proposed array can achieve beam scanning from −70° to 70° with a gain fluctuation of less than 0.8 dB while maintaining sidelobe levels below −11 dB. The proposed array has the advantages of simple structure, wide beam coverage, low gain fluctuation, and low sidelobe level.
Shang‐Yang Li, Xiaoxue Fan, Yanni Wang, Xiaoting Ma, Yan Wang, Wangzhe Li   +5 more
wiley   +1 more source

Dual-Band Shared Aperture Reflectarray and Patch Antenna Array for S- and Ka-Bands [PDF]

, 2021
Daniel E. Serup, Gert Frølund Pedersen, Shuai Zhang   +2 more
openalex   +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

Design of an Energy Selective Reflectarray Antenna for Adaptive Prevention of High‐Intensity Radiation Fields

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
This work presents an adaptive reflectarray for the high‐intensity radiation fields (HIRF) prevention in X‐band, thereby reducing the risk of interference or damage to front‐ends, receiving links, and other electronic components. ABSTRACT This paper presents an energy selective reflectarray antenna with field‐induced gain to prevent the high‐intensity ...
Jihong Zhang, Zhuang Qu, Ming Xu, Duocai Zhai, Song Zha, Peiguo Liu   +5 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