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
Une conception optimale pour NUn absorbeur d'ondes électromagnétiques (EM) capacitif de Jaumann (arbitraire), utilisant un algorithme génétique sera présenté. Cet algorithme est une méthode d'optimisation aléatoire basée sur la relation génétique chez l'être humain. Nous montrons que la bande passante d'un absorbeur Jaumann capacitif à deux feuilles peut être étendue de plus de 108 % comme le montre le nœud, en utilisant cet algorithme et sans imposer les critères de conception à double encoche. Nous montrons également que nos résultats se rapprochent de ceux de Knot lorsque nous limitons les impédances caractéristiques et les longueurs des lignes pour qu'elles varient dans une très courte plage. Nous concevons également des absorbeurs Jaumann capacitifs à une ou trois feuilles. La seule restriction utilisée ici concerne la plage significative des variables de conception. Le but de cet algorithme est de pouvoir imposer une restriction arbitraire sur la plage de variation des variables. Nous pouvons ainsi voir le comportement des performances avec la dimension de plage des variables, et nous pouvons obtenir différents résultats optimaux pour différentes plages. Finalement, nous obtenons une bande passante d'atténuation de 20 dB supérieure à 145 % pour les absorbeurs EM à une feuille, 173 % pour les absorbeurs à deux feuilles (à comparer aux 108 % obtenus dans [1]) et à 193 % pour les absorbeurs capacitifs Jaumann EM à trois feuilles, avec des valeurs acceptables. plage courte pour les variables. Nous concevons les absorbeurs capacitifs Jaumann à une feuille et à deux feuilles à basse fréquence et les absorbeurs à trois feuilles à haute fréquence. Les bandes passantes d'atténuation de 20 dB obtenues pour les absorbeurs capacitifs Jaumann à une feuille et à deux feuilles sont respectivement de 10 à 77 MHz et de 4 à 61 MHz. Pour l'absorbeur capacitif Jaumann à trois feuilles, la bande passante d'atténuation de 20 dB obtenue est comprise entre 0.8 GHz et 280 GHz.
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Ahmad CHELDAVI, "Optimum Design of N Sheet Capacitive Jaumann Absorber Using Genetic Algorithm" in IEICE TRANSACTIONS on Fundamentals,
vol. E82-A, no. 4, pp. 704-706, April 1999, doi: .
Abstract: An optimun design for N(arbitrary)-sheet capacitive Jaumann elctromagnetic (EM) wave absorber, using genetic algorithm will be presented. This algorithm is a random optimization method based on the genetic relation in the human being. We show the bandwidth for two-sheet capacitive Jaumann absorber can be expanded even more than 108% showed by knott, by using this algorithm and without imposing the double-notch design criteria. We also show that our results approaches knott's results when we restrict the characteristic impedances and lengths of the lines to vary within a very short range. We also design one-sheet and three-sheet capacitive Jaumann absorbers. The only restriction used here is about the meaningful range for the design variables. The goal of this algorithm is that we can impose arbitrary restriction about the range of the variation of the variables. So we can see the performance behaviour with the range dimension of the variables, and we can obtain different optimum results for different ranges. Finally we obtain a 20-dB attenuation bandwidth more than 145% for one-sheet, 173% for two-sheet (compare with 108% obtained in [1]) and 193% for three-sheet capacitive Jaumann EM absorbers, with some acceptable short range for the variables. We design the one-sheet and two-sheet capacitive Jaumann absorbers at low frequency and the three-sheet at high frequency. The 20-dB attenuation bandwidth obtained for the one-sheet and two-sheet capacitive Jaumann absorbers are respectively, from 10 to 77 MHz and, from 4 to 61 MHz. For the three-sheet capacitive Jaumann absorber the 20-dB attenuation bandwidth obtained is, from 0.8 GHz to 280 GHz.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e82-a_4_704/_p
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@ARTICLE{e82-a_4_704,
author={Ahmad CHELDAVI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Optimum Design of N Sheet Capacitive Jaumann Absorber Using Genetic Algorithm},
year={1999},
volume={E82-A},
number={4},
pages={704-706},
abstract={An optimun design for N(arbitrary)-sheet capacitive Jaumann elctromagnetic (EM) wave absorber, using genetic algorithm will be presented. This algorithm is a random optimization method based on the genetic relation in the human being. We show the bandwidth for two-sheet capacitive Jaumann absorber can be expanded even more than 108% showed by knott, by using this algorithm and without imposing the double-notch design criteria. We also show that our results approaches knott's results when we restrict the characteristic impedances and lengths of the lines to vary within a very short range. We also design one-sheet and three-sheet capacitive Jaumann absorbers. The only restriction used here is about the meaningful range for the design variables. The goal of this algorithm is that we can impose arbitrary restriction about the range of the variation of the variables. So we can see the performance behaviour with the range dimension of the variables, and we can obtain different optimum results for different ranges. Finally we obtain a 20-dB attenuation bandwidth more than 145% for one-sheet, 173% for two-sheet (compare with 108% obtained in [1]) and 193% for three-sheet capacitive Jaumann EM absorbers, with some acceptable short range for the variables. We design the one-sheet and two-sheet capacitive Jaumann absorbers at low frequency and the three-sheet at high frequency. The 20-dB attenuation bandwidth obtained for the one-sheet and two-sheet capacitive Jaumann absorbers are respectively, from 10 to 77 MHz and, from 4 to 61 MHz. For the three-sheet capacitive Jaumann absorber the 20-dB attenuation bandwidth obtained is, from 0.8 GHz to 280 GHz.},
keywords={},
doi={},
ISSN={},
month={April},}
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TY - JOUR
TI - Optimum Design of N Sheet Capacitive Jaumann Absorber Using Genetic Algorithm
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 704
EP - 706
AU - Ahmad CHELDAVI
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E82-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 1999
AB - An optimun design for N(arbitrary)-sheet capacitive Jaumann elctromagnetic (EM) wave absorber, using genetic algorithm will be presented. This algorithm is a random optimization method based on the genetic relation in the human being. We show the bandwidth for two-sheet capacitive Jaumann absorber can be expanded even more than 108% showed by knott, by using this algorithm and without imposing the double-notch design criteria. We also show that our results approaches knott's results when we restrict the characteristic impedances and lengths of the lines to vary within a very short range. We also design one-sheet and three-sheet capacitive Jaumann absorbers. The only restriction used here is about the meaningful range for the design variables. The goal of this algorithm is that we can impose arbitrary restriction about the range of the variation of the variables. So we can see the performance behaviour with the range dimension of the variables, and we can obtain different optimum results for different ranges. Finally we obtain a 20-dB attenuation bandwidth more than 145% for one-sheet, 173% for two-sheet (compare with 108% obtained in [1]) and 193% for three-sheet capacitive Jaumann EM absorbers, with some acceptable short range for the variables. We design the one-sheet and two-sheet capacitive Jaumann absorbers at low frequency and the three-sheet at high frequency. The 20-dB attenuation bandwidth obtained for the one-sheet and two-sheet capacitive Jaumann absorbers are respectively, from 10 to 77 MHz and, from 4 to 61 MHz. For the three-sheet capacitive Jaumann absorber the 20-dB attenuation bandwidth obtained is, from 0.8 GHz to 280 GHz.
ER -