Results 61 to 70 of about 1,257 (220)

An FSS-Backed Reflection/Transmission Reconfigurable Array Antenna

IEEE Access, 2020
Reflectarray and transmitarray antennas have been widely used in radar detection systems and satellite communications. Simultaneous realization of reflection and transmission of electromagnetic waves under the same antenna aperture will undoubtedly save ...
Wentao Li, Yiming Wang, Shunlai Sun, Xiaowei Shi   +3 more
doaj   +1 more source

Design of Multi-Functional Transmitarray with Active Linear Polarization Conversion and Beam Steering Capabilities

Applied Sciences, 2022
This study designed a multi-functional reconfigurable transmitarray with switchable polarization and beam steering capabilities using only a PIN diode having ON/OFF switching ability.
In-Gon Lee, Jong-Yeong Kim, Ic-Pyo Hong
doaj   +1 more source

Wideband Frequency Selective Surface Based Transmitarray Antenna at X-Band [PDF]

, 2020
In this paper, a wideband multilayer transmitarray antenna is designed for Ku frequency band. The unit cell is designed at 12GHz using frequency selective surface structure.
Hamid, Mohamad Rijal, Iqbal, Muhammad Naeem, Johari, Zaharah, Majid, Huda Bin A, Rahim, Mohammad Kamal A, Yusoff, Mohd Fairus Mohd, Zubir, Farid   +6 more
core   +2 more sources

Bandwidth Improvement Methods of Transmitarray Antennas

IEEE Transactions on Antennas and Propagation, 2015
Despite several advantages of planar transmitarray antennas compared to conventional lens antennas, they have a narrow bandwidth. The goal of this paper is to improve the bandwidth of transmitarray antennas through the control of the transmission phase range and the optimization of the phase distribution on the transmitarray aperture.
Ahmed H. Abdelrahman, Payam Nayeri, Atef Z. Elsherbeni, Fan Yang   +3 more
openaire   +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

An Extremely Low‐Profile Electronically Reconfigurable 1‐D X‐Band Leaky‐Wave Antenna

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
A 1‐bit electronically tunable 1‐D leaky‐wave antenna is proposed in this work. The theoretical basis of the proposed structure is first evaluated using the array factor and the concept is experimentally confirmed using a 21‐element prototype. ABSTRACT In this work, a simple analytical model based on the array factor to effect 1‐bit electronic ...
Kevin Kipruto Mutai, Xianbo Cao, Qiang Chen   +2 more
wiley   +1 more source

Mechanically Reconfigurable, Beam-Scanning Reflectarray and Transmitarray Antennas: A Review

Applied Sciences, 2021
We review mechanically reconfigurable reflectarray (RA) and transmitarray (TA) antennas. We categorize the proposed approaches into three major groups followed by a hybrid category that is made up of a combination of the three major approaches.
Mirhamed Mirmozafari, Zongtang Zhang, Meng Gao, Jiahao Zhao, Mohammad Mahdi Honari, John H. Booske, Nader Behdad   +6 more
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

Design of a Folded Transmitarray Antenna With Field-Controlled Gain for HIRF Protection

IEEE Open Journal of Antennas and Propagation
This paper proposed a folded transmitarray antenna for high-intensity radiation fields (HIRF) protection, which can adaptively change gain based on the intensity of the incident electromagnetic field.
Zhuang Qu, Song Zha, Jihong Zhang, Ming Xu, Zhengwei Liu, Peiguo Liu   +5 more
doaj   +1 more source

A Dual-Port Dual-Band Dual-Circularly Polarized OAM-Generating Folded Transmitarray Antenna Based on Polarization Conversion of Vortex Waves [PDF]

Journal of Electromagnetic Engineering and Science
In this study, an orbital-angular-momentum (OAM)-generating folded transmitarray antenna is proposed. The antenna is fed by dual probe ports that are excited to generate right-handed and left-handed circularly polarized (CP) vortex waves in the lower and
Li Guo, Longxin Jiao
doaj   +1 more source