Results 1 to 10 of about 3,649 (208)

Isolation Improvement in Reflectarray Antenna-Based FMCW Radar Systems [PDF]

open access: yesSensors, 2022
This paper presents an optimization of reflectarray-based RF sensors for detecting UAV and human presence. Our previous human detection radar system adapted a center-fed reflectarray antenna to a commercially available radar system, successfully ...
Hesham Yamani, Jihwan Yoon
doaj   +2 more sources

Analysis and Design of an X-Band Reflectarray Antenna for Remote Sensing Satellite System [PDF]

open access: yesSensors, 2022
This paper presents the analysis and design of an X-band reflectarray. The proposed antenna can be used for a medium Earth orbit (MEO) remote sensing satellite system in the 8.5 GHz band.
Shimaa A. M. Soliman   +2 more
doaj   +2 more sources

Design and Analysis of Wideband Single-Layer Reflectarray Antenna for Remote Sensing and Environmental Monitoring [PDF]

open access: yesSensors
In this article, a wideband single-layer reflectarray antenna for Ku-band applications is presented. The proposed reflectarray antenna is suitable for applications such as fixed satellite service (FSS), broadcasting satellite service (BSS), earth ...
Annal Joy J   +4 more
doaj   +2 more sources

Neural Network Characterization of Reflectarray Antennas [PDF]

open access: yesInternational Journal of Antennas and Propagation, 2012
An efficient artificial neural network (ANN) approach for the modeling of reflectarray elementary components is introduced to improve the numerical efficiency of the different phases of the antenna design and optimization procedure, without loss in ...
Freni, A.   +2 more
core   +6 more sources

A novel broadband reflectarray antenna employing equivalent magnetic dipole elements [PDF]

open access: yesScientific Reports
In this paper, a planar reflectarray antenna employing equivalent magnetic dipole (EMD) elements is proposed. An H-shaped patch and two coupling T-shaped patches are employed as the EMD element, in which the electric current intrinsically flows on the ...
Sen Li   +6 more
doaj   +2 more sources

Broadband single-layer reflectarray antenna loaded with meander-delay-lines for X-band applications

open access: yesAlexandria Engineering Journal, 2021
In this work, delay-lines loaded broadband reflectarray antenna is proposed for X-band applications. The array cells contain slotted square patch and quad meander delay-lines.
Tayyab Shabbir   +4 more
doaj   +1 more source

Design Procedure for a Novel LMDS Base Station Reflectarray Antenna [PDF]

open access: yesAUT Journal of Electrical Engineering, 2023
A Reflectarray Antenna is designed to operate at X-band as a Local Multipoint Distribution Service (LMDS) base station antenna. It is a center-fed single layer reflectarray consisting of 23×27 elements.
Reza Masoumi, Robab Kazemi
doaj   +1 more source

Unfermented Freeze-Dried Leaf Extract of Tongkat Ali (Eurycoma longifolia Jack.) Induced Cytotoxicity and Apoptosis in MDA-MB-231 and MCF-7 Breast Cancer Cell Lines [PDF]

open access: yes, 2021
possible anticancer mechanism of action against breast cancer cell lines: non-hormone-dependent MDA-MB-231 and hormonedependent MCF-7. -e leaves of E.
Abdul Aziz, Zaleha   +3 more
core   +1 more source

Proof-of-Concept on Misalignment Compensation for 5.8-GHz-Band Reflectarray Antennas by Varactor Diodes

open access: yesIEEE Access, 2021
Membrane reflectarray antennas with flexible support structures realize low weight and low stowage volume. However, deformation of the reflectarray membrane generally degrades antenna gain. We propose electrical misalignment compensation for 5.8-GHz-band
Keisuke Omoto   +2 more
doaj   +1 more source

Efficient Graphene Reconfigurable Reflectarray Antenna Electromagnetic Response Prediction Using Deep Learning

open access: yesIEEE Access, 2021
Aiming at the time-consuming problem of the full-wave (FW) simulation of the scattering characteristics of the traditional graphene reconfigurable reflectarray antenna, a fast prediction method of electromagnetic (EM) response based on deep learning is ...
Li Ping Shi   +4 more
doaj   +1 more source

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