Results 1 to 10 of about 409 (184)

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

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

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

Single-Layer, Multimode OAM Reflectarray Antennas

open access: yesIEEE Antennas and Wireless Propagation Letters, 2023
In this letter, an innovative ReflectArray (RA) antenna able to radiate in the same direction multiple Orbital Angular Momentum (OAM) modes, is presented: depending on the direction of arrival of the impinging field, the RA radiates a broadside beam carrying on an OAM mode with different index.
Michele Beccaria   +2 more
openaire   +2 more sources

Reflectarray Antennas printed on convex surfaces [PDF]

open access: yes2015 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2015
The characteristics of Reflectarray Antennas printed on convex curved surfaces are discussed in this paper. In particular, results will be presented on the radiation performances of Reflectarrays designed to fit cylinders with different radii of curvature, and with different types of radiating elements.
Bui Van H.a.   +4 more
openaire   +1 more source

X-band reflectarray antenna with arbitrarily (elliptical) polarization for high-power microwave applications

open access: yesEngineering Science and Technology, an International Journal, 2020
An X-band high-power microwave antenna with arbitrarily (elliptical) polarization is proposed and investigated in this paper. The proposed antenna is founded on a reflectarray composed of printed elements and excited by the microwave energy in the ...
Sahar Abdi Tazehabadi, Shahrokh Jam
doaj   +1 more source

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