Results 71 to 80 of about 5,646 (202)

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

Design and Characterisation of All‐Dielectric Metasurface Reflector for mmWave Antennas

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
This study presents an all‐dielectric artificial magnetic conductor (AMC) operating at 77 GHz with zero‐phase reflection, featuring a −1‐dB reflection bandwidth of 3.6 and 8.2 GHz for ± 45° and ± 90° reflection phases, respectively. Simulation and measurement results validate the design's performance while highlighting discrepancies attributed to ...
Muhammad Uzair, Guillaume François, Dirk Heberling, Suramate Chalermwisutkul   +3 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

Development of a Pin Diode-Based Beam-Switching Single-Layer Reflectarray Antenna

International Journal of Antennas and Propagation, 2020
This paper presents a practical demonstration for the design and development of a switchable planar reflectarray using PIN diodes in the X-band frequency range.
Muhammad Inam Abbasi, Muhammad Yusof Ismail, Muhammad Ramlee Kamarudin   +2 more
doaj   +1 more source

All-dielectric reciprocal bianisotropic nanoparticles

, 2015
The study of high-index dielectric nanoparticles currently attracts a lot of attention. They do not suffer from absorption but promise to provide control on the properties of light comparable to plasmonic nanoparticles.
Alaee, Rasoul, Albooyeh, Mohammad, Kivshar, Yuri S., Mirmoosa, Mohammad S., Rahimzadegan, Aso, Rockstuhl, Carsten   +5 more
core   +1 more source

A Wideband Multibeam Transmitarray Antenna Based on 3‐D FSS

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna. Through numerical calculations, simulations and measurements, the TA demonstrates outstanding multibeam radiation characteristics. ABSTRACT This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna.
Longfei Wang, Wanping Zhang, Yumei Chang, Bo Li, Lei Zhu   +4 more
wiley   +1 more source

Broadband Single-layer E-Patch Reflectarray [PDF]

Radioengineering, 2017
E-shaped patch resonator is proposed for designing a novel broadband linearly polarized reflectarray for the first time. The element is made up of a shorted E-shaped patch with a polystyrene foam placed beneath it, and no dielectric substrate is needed ...
S. R. Lee, E. H. Lim, F. L. Lo
doaj  

Keberkesanan program industrial skills enhancement programme (INSEP) dalam membantu peningkatan kemahiran kebolehpekerjaan peserta program di pusat pembangunan kemahiran negeri [PDF]

, 2006
Pengangguran di kalangan siswazah merupakan satu masalah global dan ia menjadi satu isu yang hangat diperdebatkan di Malaysia baru-baru ini. Salah satu langkah untuk mengatasi masalah ini ialah dengan melaksanakan program Industrial (INSEP) di Malaysia ...
Hai Kelian, Virakwan
core  

Multifed Printed Reflectarray With Three Simultaneous Shaped Beams for LMDS Central Station Antenna [PDF]

, 2008
A two-layer reflectarray is proposed as a central station antenna for a local multipoint distribution system (LMDS) in the 24.5-26.5 GHz band. The antenna produces three independent beams in an alternate linear polarization that are shaped both in ...
Arrebola, Manuel, Barba Gea, Mariano, Encinar Garcinuño, José Antonio   +2 more
core   +3 more sources

Broadband Lumped Mirror Array mmWave Antenna for Wireless and Defense Systems

Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.
This article introduces a novel lumped mirror array mmWave antenna designed for multiband microwave applications, including 5G, satellite communication, and defense systems. The antenna operates over a broad frequency range from 4.7 to 67.63 GHz, offering excellent impedance bandwidth of 70.4%. Developed on an FR‐4 substrate with dimensions of 160 × 70 
Manish Varun Yadav, Lanston Pramith Fernandes, Swati Varun Yadav, Tanweer Ali, Dinesh Yadav, Vikas Singh, Kirti Panwar bhati, Shonak Bansal   +7 more
wiley   +1 more source