The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Cet article présente un métaréseau rétrodirectif conforme avec une capacité de fonctionnement multi-angle azimutal. Tout d'abord, un métaréseau plat composé d'un réseau périodique d'éléments de patch rectangulaires uniques, de substrats empilés à deux couches et d'un plan de masse est mis en œuvre pour obtenir une rétroréflexion unidirectionnelle à un angle spécifique. L'angle d'élévation de la rétroréflexion est manipulé en réglant précisément la valeur de la période. Pour contrôler le couplage énergétique au mode rétrodirectif, les dimensions de longueur et de largeur du patch rectangulaire sont étudiées sous l'effet du changement d'épaisseur du substrat. Trois valeurs de longueur, de largeur et d'épaisseur sont ensuite choisies pour obtenir un rendement de puissance de rétroréflexion élevé. Ensuite, pour créer une conception conforme fonctionnant simultanément à plusieurs angles azimutaux, le réseau de patchs rectangulaires utilisant une couche de guidage ultra-mince et flexible est conformé à un substrat cylindrique diélectrique soutenu par un plan de masse conducteur électrique parfait. De plus, pour optimiser davantage l'efficacité de la rétroréflexion, deux plaques métalliques circulaires sont ajoutées aux deux extrémités du substrat cylindrique pour éliminer la réflexion spéculaire à l'intérieur de l'espace du cylindre. La section efficace radar mesurée montre une efficacité énergétique du métaréseau rétrodirectif d'environ 91 % et 93 % pour un angle d'élévation rétrodirigé de 30° aux angles azimutaux de 0° et 90°, respectivement, à 5.8 GHz.
The Viet HOANG
Hongik University
Jeong-Hae LEE
Hongik University
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The Viet HOANG, Jeong-Hae LEE, "Efficient Conformal Retrodirective Metagrating Operating Simultaneously at Multiple Azimuthal Angles" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 1, pp. 73-79, January 2021, doi: 10.1587/transcom.2020EBP3037.
Abstract: This paper presents a conformal retrodirective metagrating with multi-azimuthal-angle operating ability. First, a flat metagrating composed of a periodic array of single rectangular patch elements, two-layer stacked substrates, and a ground plane is implemented to achieve one-directional retroreflection at a specific angle. The elevation angle of the retroreflection is manipulated by precisely tuning the value of the period. To control the energy coupling to the retrodirective mode, the dimensions of the length and width of the rectangular patch are investigated under the effect of changing the substrate thickness. Three values of the length, width, and thickness are then chosen to obtain a high retroreflection power efficiency. Next, to create a conformal design operating simultaneously at multiple azimuthal angles, the rectangular patch array using a flexible ultra-thin guiding layer is conformed to a dielectric cylindrical substrate backed by a perfect electric conductor ground plane. Furthermore, to further optimize the retroreflection efficiency, two circular metallic plates are added at the two ends of the cylindrical substrate to eliminate the specular reflection inside the space of the cylinder. The measured radar cross-section shows a power efficiency of the retrodirective metagrating of approximately 91% and 93% for 30° retrodirected elevation angle at the azimuthal angles of 0° and 90°, respectively, at 5.8GHz.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020EBP3037/_p
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@ARTICLE{e104-b_1_73,
author={The Viet HOANG, Jeong-Hae LEE, },
journal={IEICE TRANSACTIONS on Communications},
title={Efficient Conformal Retrodirective Metagrating Operating Simultaneously at Multiple Azimuthal Angles},
year={2021},
volume={E104-B},
number={1},
pages={73-79},
abstract={This paper presents a conformal retrodirective metagrating with multi-azimuthal-angle operating ability. First, a flat metagrating composed of a periodic array of single rectangular patch elements, two-layer stacked substrates, and a ground plane is implemented to achieve one-directional retroreflection at a specific angle. The elevation angle of the retroreflection is manipulated by precisely tuning the value of the period. To control the energy coupling to the retrodirective mode, the dimensions of the length and width of the rectangular patch are investigated under the effect of changing the substrate thickness. Three values of the length, width, and thickness are then chosen to obtain a high retroreflection power efficiency. Next, to create a conformal design operating simultaneously at multiple azimuthal angles, the rectangular patch array using a flexible ultra-thin guiding layer is conformed to a dielectric cylindrical substrate backed by a perfect electric conductor ground plane. Furthermore, to further optimize the retroreflection efficiency, two circular metallic plates are added at the two ends of the cylindrical substrate to eliminate the specular reflection inside the space of the cylinder. The measured radar cross-section shows a power efficiency of the retrodirective metagrating of approximately 91% and 93% for 30° retrodirected elevation angle at the azimuthal angles of 0° and 90°, respectively, at 5.8GHz.},
keywords={},
doi={10.1587/transcom.2020EBP3037},
ISSN={1745-1345},
month={January},}
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TY - JOUR
TI - Efficient Conformal Retrodirective Metagrating Operating Simultaneously at Multiple Azimuthal Angles
T2 - IEICE TRANSACTIONS on Communications
SP - 73
EP - 79
AU - The Viet HOANG
AU - Jeong-Hae LEE
PY - 2021
DO - 10.1587/transcom.2020EBP3037
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2021
AB - This paper presents a conformal retrodirective metagrating with multi-azimuthal-angle operating ability. First, a flat metagrating composed of a periodic array of single rectangular patch elements, two-layer stacked substrates, and a ground plane is implemented to achieve one-directional retroreflection at a specific angle. The elevation angle of the retroreflection is manipulated by precisely tuning the value of the period. To control the energy coupling to the retrodirective mode, the dimensions of the length and width of the rectangular patch are investigated under the effect of changing the substrate thickness. Three values of the length, width, and thickness are then chosen to obtain a high retroreflection power efficiency. Next, to create a conformal design operating simultaneously at multiple azimuthal angles, the rectangular patch array using a flexible ultra-thin guiding layer is conformed to a dielectric cylindrical substrate backed by a perfect electric conductor ground plane. Furthermore, to further optimize the retroreflection efficiency, two circular metallic plates are added at the two ends of the cylindrical substrate to eliminate the specular reflection inside the space of the cylinder. The measured radar cross-section shows a power efficiency of the retrodirective metagrating of approximately 91% and 93% for 30° retrodirected elevation angle at the azimuthal angles of 0° and 90°, respectively, at 5.8GHz.
ER -