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Design of Liquid Based Frequency Selective Surfaces Operating as AbsorbersDE SABATA, A.   , SILAGHI, A. , IONICA, C. , PACURAR, O. |
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Author keywords
absorbers, electromagnetic compatibility, electromagnetic modeling, frequency selective surfaces, reflection coefficient
References keywords
dielectric(22), frequency(11), selective(10), metamaterial(10), propag(9), antennas(9), access(8), water(7), surface(7), band(6)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2024-11-30
Volume 24, Issue 4, Year 2024, On page(s): 75 - 82
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2024.04008
Abstract
Liquid-based absorbers using frequency selective surfaces (FSSs) rely on 2D periodic lattices. Each unit cell contains one or more resonators filled with liquids, which dissipate electromagnetic energy. Water is preferred because of its wide availability and its high real and imaginary permittivity components. In this paper, we propose and optimize an all-dielectric unit cell structure placed on a metallic plane to function as an absorber when filled with water. A sharp and deep absorption resonance is obtained at 2 GHz, with a relative bandwidth of 14.5%. When optimized to work with methanol as absorbing liquid, the structure presents a resonance frequency of 1.25 GHz, with a relative bandwidth of 36.9%, and a second wide absorption band between 3.56 and 5 GHz. Field images are used to gain insight into the operation of the absorber. The sensitivity of the design to polarization, angle of incidence and temperature has been investigated. The proposed absorber has potential applications in scattering reduction, electromagnetic compatibility and energy harvesting. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.
