Results 11 to 20 of about 911 (207)

Different Designs of Dual-Focus Perforated Transmitarray Antenna in Near/Far-Field Region

Advanced Electromagnetics, 2016
Designs of the single-focus and multi-focused transmitarray antennas for the near-field (NF) or/and far-field (FF) applications have been introduced. Perforated dielectric single sheet is used for transmitarray design for simple configuration.
H. Abd El-Azem Malhat, S. Zainud-Deen, W. Hassan   +2 more
doaj   +3 more sources

Ku band transmitarray lens for microwave applications [PDF]

AEU - International Journal of Electronics and Communications, 2011
In this document a microstrip constrained lens device for Ku band, for microwave purpose, is presented. This paper offers an overview of artificial lens-type devices and the proposed transmitarray lens is thoroughly studied in terms of design and manufacturing, with architecture discussion and selection, along with the design, manufacturing and ...
Padilla de La Torre, Pablo, Muñoz Acevedo, Alfonso, Fernández González, José Manuel, Sierra Castañer, Manuel   +3 more
openaire   +3 more sources

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

IET Microwaves, Antennas & Propagation
In this paper, a 1‐THz graphene–metal‐hybrid transmissive metasurface is proposed, which consists of six layers. By applying a dc biasing voltage, over a 360°‐phase variation of the transmitted wave is obtained. Also a transmitarray for steering a pencil‐
P. Hosseini, H. Oraizi
doaj   +2 more sources

Design and implementation of a novel wideband dual‐polarised transmitarray antenna based on tightly coupled cross dipole cells

IET Microwaves, Antennas & Propagation
A novel broadband dual‐polarised transmitarray antenna (TA) utilising tightly coupled cross dipole cells is proposed in this work. The transmitarray cell using the tightly coupling wideband principle comprises two radiation patches designed as two ...
Yong Heng Zhao, Yin Li, Li Jun Jiang, Ping Li   +3 more
doaj   +2 more sources

Wideband Transmitarray Antenna Based on Two-Layer Aperture-Coupled Metasurface Unit Cell [PDF]

Journal of Electromagnetic Engineering and Science
In this paper, a transmitarray antenna is designed and fabricated based on a two-layer aperture-coupled patch unit cell. The unit cell is composed of two layers of dielectric substrate with a simple narrow rectangular aperture between the layers. Through
Masoumeh Darwish, Hamid Reza Hassani
doaj   +2 more sources

Wideband Bifocal Dielectric Transmitarray [PDF]

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019
In this paper, some numerical results on the scanning capabilities of a bifocal dielectric transmitarray (TA) are presented. The TA surface has been discretized with three-layer unit cells: the central one presents a varying size square hole, used to control the phase of the transmission coefficient, while the two identical, external layers are ...
Andrea Massaccesi, Paola Pirinoli
openaire   +3 more sources

The Design of Broadband Circularly Polarized Multi-beam Antenna with Linearly Polarized Feeding Source and Transmitarray Unit [PDF]

Radioengineering
Among the existing circularly polarized multi-beam transmitarray antennas, circularly or linearly-to-circularly polarized transmitarray units are always required.
Z. Guo, Y. Zhou, H. Yang, S. Li, T. Li, X. Cao   +5 more
doaj   +1 more source

A reconfigurable transmitarray unit cell employing liquid metal

IET Microwaves, Antennas & Propagation
In this paper, a reconfigurable transmitarray unit cell using liquid metal is presented. It consists of three conducting layers where the geometries of the resonators, on the different layers, differ and consist of an arrow shape together with rotated ...
Zhishu Qu, Yihua Zhou, James R. Kelly, Zhengpeng Wang, Kenneth Lee Ford, Yue Gao   +5 more
doaj   +2 more sources

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.
Iqbal, Muhammad Naeem; Universiti Teknologi Malaysia, Johari, Zaharah; Universiti Teknologi Malaysia, Hamid, Mohamad Rijal; Universiti Teknologi Malaysia, Yusoff, Mohd Fairus Mohd; Universiti Teknologi Malaysia, Rahim, Mohammad Kamal A; Universiti Teknologi Malaysia, Zubir, Farid; Universiti Teknologi Malaysia, Majid, Huda Bin A; Universiti Tun Hussein Onn Malaysia   +6 more
core   +3 more sources

Combined Single-Layer K-Band Transmitarray and Beamforming S-Band Antenna Array for Satcom

IEEE Open Journal of Antennas and Propagation, 2022
In this paper, a dual-band antenna at 4.5 GHz and 25 GHz is presented. The antenna is a low-frequency phased patch antenna array combined with a high-frequency transmitarray with a fixed beam.
Daniel Edelgaard Serup, Gert Frolund Pedersen, Shuai Zhang   +2 more
doaj   +1 more source