Détail de l'auteur
Auteur Abdelmadjid Benghalia |
Documents disponibles écrits par cet auteur (13)
Affiner la recherche Interroger des sources externesAnalyse et realisation d’antennes patch microbande montees sur substrat de formes cylindriques / Nadjet Sahnoun
Titre : Analyse et realisation d’antennes patch microbande montees sur substrat de formes cylindriques : Applications ULB Type de document : texte imprimé Auteurs : Nadjet Sahnoun, Auteur ; Abdelmadjid Benghalia, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 123 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : vpolymophismes génétiques maladie thromboembolique veineuse thrombophilie hypperhomocystéinémie C677T de la MTHFR JAK2-V617F calréticuline hémostase Microstrip antennas dielectric resonator antennas finite differences
time-domain method (FDTD) ultra-wideband antennas cylindrical antennas هوائيات ذات نطاق دقيق هوائيات ذات رنان عازل طريقة الفروق المحدودة في المجال الزمني
(FDTD) هوائيات ذات نطاق فائق العرض هوائيات اسطوانية"Index. décimale : 621 Electronique Résumé : This work proposes a contribution to studying, designing of the non planar
antennas having a wide band for wireless communications. The first part is concerned to
study planar antennas such as microstrip antenna (MSA) and dielectric resonator antenna
(DRA). The electromagnetic characteristics of both antennas are calculated by the finite
difference method in the time domain using the Perfectly Matched Layer (PML) as the
boundary conditions and Ansoft HFSS software. The results comparison shows that the
RD antenna offer high performance such as high bandwidth and a low quality factor Q.
In the second part, two new cylindrical antennas were designed and fabricated for ultra
wide band applications (ULB) (a bandwidth of 3.1GHz to 10.6 GHz). The first structure
integrates two antennas; one has a UW band for dynamic spectrum sensing and the other
has a narrow band for transmission, this antenna has a transmission coefficient less than
-20 dB which ensures effective integration. The second structure is an UWB dualpolarized antenna for transmission and reception of signals on two orthogonal
polarizations with a good separation between the two polarization ports
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/SAH7085.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10516 Analyse et realisation d’antennes patch microbande montees sur substrat de formes cylindriques : Applications ULB [texte imprimé] / Nadjet Sahnoun, Auteur ; Abdelmadjid Benghalia, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 123 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : vpolymophismes génétiques maladie thromboembolique veineuse thrombophilie hypperhomocystéinémie C677T de la MTHFR JAK2-V617F calréticuline hémostase Microstrip antennas dielectric resonator antennas finite differences
time-domain method (FDTD) ultra-wideband antennas cylindrical antennas هوائيات ذات نطاق دقيق هوائيات ذات رنان عازل طريقة الفروق المحدودة في المجال الزمني
(FDTD) هوائيات ذات نطاق فائق العرض هوائيات اسطوانية"Index. décimale : 621 Electronique Résumé : This work proposes a contribution to studying, designing of the non planar
antennas having a wide band for wireless communications. The first part is concerned to
study planar antennas such as microstrip antenna (MSA) and dielectric resonator antenna
(DRA). The electromagnetic characteristics of both antennas are calculated by the finite
difference method in the time domain using the Perfectly Matched Layer (PML) as the
boundary conditions and Ansoft HFSS software. The results comparison shows that the
RD antenna offer high performance such as high bandwidth and a low quality factor Q.
In the second part, two new cylindrical antennas were designed and fabricated for ultra
wide band applications (ULB) (a bandwidth of 3.1GHz to 10.6 GHz). The first structure
integrates two antennas; one has a UW band for dynamic spectrum sensing and the other
has a narrow band for transmission, this antenna has a transmission coefficient less than
-20 dB which ensures effective integration. The second structure is an UWB dualpolarized antenna for transmission and reception of signals on two orthogonal
polarizations with a good separation between the two polarization ports
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/SAH7085.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10516 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SAH/7085 SAH/7085 Thèse Bibliothèque principale Thèses Disponible
Titre : Application de la technique du domaine spectrale aux lignes de transmission planaires multicouches et à l'antenne micro-ruban triangulaire Type de document : texte imprimé Auteurs : Chafika Aissaoui ; Univ. de Constantine, Éditeur scientifique ; Abdelmadjid Benghalia, Directeur de thèse Année de publication : 2002 Importance : 81 f. Note générale : 01 disponible dans la salle de recherche
02 disponibles au magasin de la bibliothèque centraleLangues : Français (fre) Catégories : Français - Anglais
ElectroniqueIndex. décimale : 621 Electronique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2488 Application de la technique du domaine spectrale aux lignes de transmission planaires multicouches et à l'antenne micro-ruban triangulaire [texte imprimé] / Chafika Aissaoui ; Univ. de Constantine, Éditeur scientifique ; Abdelmadjid Benghalia, Directeur de thèse . - 2002 . - 81 f.
01 disponible dans la salle de recherche
02 disponibles au magasin de la bibliothèque centrale
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueIndex. décimale : 621 Electronique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2488 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité AIS/3695 AIS/3695 Thèse Bibliothèque principale Thèses Disponible
Titre : Caractérisation d’une antenne microbande couplée par une ouverture de forme rectangulaire. Application à la réalisation d’une antenne multibande. Type de document : texte imprimé Auteurs : Leila Chouti, Auteur ; Abdelmadjid Benghalia, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 112 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Antenne microruban antenne microruban couplée par une ouverture méthode des différences finies (FDTD) système MIMO antenne multi bande microstrip antenna aperture microstrip antenna FDTD method MIMO system multiband antenna ھوائیات میكرو شریطیة ھوائیات المیكرو شریطیة المقترنة بفتحة طریقة FDTD
نظام MIMOھوائي متعدد النطاقاتIndex. décimale : 621 Electronique Résumé : The main purpose of this thesis was to study, modeling and design of printed antennas. Three main parts have formed the body of this thesis. In the first part, we have developed two methods for modeling a rectangular microstrip antenna with a rectangular aperture in the ground plane. The first method is based on the determination of hybrid dyadic Green’s functions in the spectral domain, while in the second method, we have applied the finite difference time domain for the analysis of the microstrip antenna. The two methods have been
validated by comparing our numerical results with experimental measurements as well as with results obtained using the HFSS simulation software.
The second part has been devoted to the study of performances of two multi-antennas systems. Each system has eight radiating elements having as a basic element a microstrip patch. The main difference between these two systems lies in the excitation technique, where the radiating elements of the second multi-antenna system have been fed through apertures cut into the ground plane. The performances in terms of adaptation and isolation for these two systems have been discussed. Results concerning the radiation patterns and gain have been also presented.
In the third part of this thesis, our efforts were directed towards the design of a new tri-band triangular monopole antenna structure. A rectangle-shaped aperture has been etched on the radiating element to generate the second resonant frequency. To obtain the third resonant frequency, a pair of symmetrical L-shaped parasitic elements has been added on both sides of the triangular monopole antenna. A coplanar waveguide feeding mechanism has been used to provide good performances on all bands. The CST simulation software has been used in the
optimization of the parameters of the proposed antenna. A prototype of the proposed antenna has been fabricated in the RF laboratory of the INRS in Montreal, Canada.
The simulated results in terms of reflection coefficient and radiation pattern have been compared with experimental measurements and a good agreement has been obtained.
Measured and simulated results demonstrate that the proposed antenna can achieve three desired operating bands, higher isolation characteristic between adjacent bands. A stable gain and a good omnidirectional radiation in the H-plane have also been achieved. As a result, the performances offered by the proposed antenna are very promising for practical WLAN/WiMAX applications.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/CHO7294.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10909 Caractérisation d’une antenne microbande couplée par une ouverture de forme rectangulaire. Application à la réalisation d’une antenne multibande. [texte imprimé] / Leila Chouti, Auteur ; Abdelmadjid Benghalia, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 112 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Antenne microruban antenne microruban couplée par une ouverture méthode des différences finies (FDTD) système MIMO antenne multi bande microstrip antenna aperture microstrip antenna FDTD method MIMO system multiband antenna ھوائیات میكرو شریطیة ھوائیات المیكرو شریطیة المقترنة بفتحة طریقة FDTD
نظام MIMOھوائي متعدد النطاقاتIndex. décimale : 621 Electronique Résumé : The main purpose of this thesis was to study, modeling and design of printed antennas. Three main parts have formed the body of this thesis. In the first part, we have developed two methods for modeling a rectangular microstrip antenna with a rectangular aperture in the ground plane. The first method is based on the determination of hybrid dyadic Green’s functions in the spectral domain, while in the second method, we have applied the finite difference time domain for the analysis of the microstrip antenna. The two methods have been
validated by comparing our numerical results with experimental measurements as well as with results obtained using the HFSS simulation software.
The second part has been devoted to the study of performances of two multi-antennas systems. Each system has eight radiating elements having as a basic element a microstrip patch. The main difference between these two systems lies in the excitation technique, where the radiating elements of the second multi-antenna system have been fed through apertures cut into the ground plane. The performances in terms of adaptation and isolation for these two systems have been discussed. Results concerning the radiation patterns and gain have been also presented.
In the third part of this thesis, our efforts were directed towards the design of a new tri-band triangular monopole antenna structure. A rectangle-shaped aperture has been etched on the radiating element to generate the second resonant frequency. To obtain the third resonant frequency, a pair of symmetrical L-shaped parasitic elements has been added on both sides of the triangular monopole antenna. A coplanar waveguide feeding mechanism has been used to provide good performances on all bands. The CST simulation software has been used in the
optimization of the parameters of the proposed antenna. A prototype of the proposed antenna has been fabricated in the RF laboratory of the INRS in Montreal, Canada.
The simulated results in terms of reflection coefficient and radiation pattern have been compared with experimental measurements and a good agreement has been obtained.
Measured and simulated results demonstrate that the proposed antenna can achieve three desired operating bands, higher isolation characteristic between adjacent bands. A stable gain and a good omnidirectional radiation in the H-plane have also been achieved. As a result, the performances offered by the proposed antenna are very promising for practical WLAN/WiMAX applications.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/CHO7294.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10909 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHO/7294 CHO/7294 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution à l’analyse des antennes microbandes avec excitation par la méthode du domaine spectral - Application à un réseau d’antennes microbandes Type de document : texte imprimé Auteurs : Chafika Aissaoui, Auteur ; Abdelmadjid Benghalia, Auteur Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 108 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : l’antenne microbande le domaine spectral patch réseau Index. décimale : 621 Electronique Résumé : The whole of this work is a characterization of the micro band antennas with and
without excitation by the technique of the spectral domain. The solution of a single
microstrip antenna is applied to an array of antennas. The analysis is based on an integral
method using the spectral tensor of Green function and the method of moments. As a
resolution tool, we used the Galerkin procedure, where we injected three specific basic
functions for the shape of the isosceles, equilateral and rectangular patch. We have also
demonstrated the effect of the uniaxiale anisotropy of the substrate on the resonance
frequency and observed the effect of the position of the feed probe on the input impedance
of the antenna. Finally, we were interested to plot the radiation patterns of the array of
antennas with triangular patches taken in a circular arrangement and then in a rectilinear
arrangement by varying the number of elements N of the network, the distance between
elements d, the phase shift of the elements current δ and the steering angle θ0.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/AIS7098.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10503 Contribution à l’analyse des antennes microbandes avec excitation par la méthode du domaine spectral - Application à un réseau d’antennes microbandes [texte imprimé] / Chafika Aissaoui, Auteur ; Abdelmadjid Benghalia, Auteur . - جامعة الإخوة منتوري قسنطينة, 2017 . - 108 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : l’antenne microbande le domaine spectral patch réseau Index. décimale : 621 Electronique Résumé : The whole of this work is a characterization of the micro band antennas with and
without excitation by the technique of the spectral domain. The solution of a single
microstrip antenna is applied to an array of antennas. The analysis is based on an integral
method using the spectral tensor of Green function and the method of moments. As a
resolution tool, we used the Galerkin procedure, where we injected three specific basic
functions for the shape of the isosceles, equilateral and rectangular patch. We have also
demonstrated the effect of the uniaxiale anisotropy of the substrate on the resonance
frequency and observed the effect of the position of the feed probe on the input impedance
of the antenna. Finally, we were interested to plot the radiation patterns of the array of
antennas with triangular patches taken in a circular arrangement and then in a rectilinear
arrangement by varying the number of elements N of the network, the distance between
elements d, the phase shift of the elements current δ and the steering angle θ0.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/AIS7098.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10503 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité AIS/7098 AIS/7098 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution à l'étude d'antennes imprimées rectangulaires double bande et multi-bandes tenant compte de l'effet de couplage. Type de document : texte imprimé Auteurs : Leila Chouti, Auteur ; Abdelmadjid Benghalia, Directeur de thèse Mention d'édition : 13/01/2009 Editeur : Constantine : Université Mentouri Constantine Année de publication : 2009 Importance : 81 f. Format : 30 cm. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Micro-ondes Antennes imprimées Effet de couplage Index. décimale : 621 Electronique Résumé : In this memory, we are interested in the characterization of a rectangular microstrip antenna. Initially we use an integral method, method of moments which enabled us to exploit the spectral tensor of Green. The resolution of the integral equations of the electric field by the procedure of Galerkin makes it possible to lead to a system of equations homogenous from which we calculate the frequency of resonance, the others parameters of the micro strip antenna like; the factor of quality, the band width and the radiated field, are deduced.
An analysis of printed antennas feeded and disposed on periodic etwork, while taking account of the effect of coupling, was treated.
The coupling between two elements was taken into account. The study was extended to the calculation of the coupling between several elements in a general configuration. The diagram of radiation of a network of antennas microrubans depends on the determination of the current of each antenna supply; we employ the method of moments to compute the matrix potantiel and mutual impedance between microstrip
antennas.The numerical results obtained, show that the coupling is very significant when the two antennas are close, but when the distance is large, the coefficient of coupling east decreases.Note de contenu : Annexe. Diplôme : Magistère En ligne : ../theses/electronique/CHO5273.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2811 Contribution à l'étude d'antennes imprimées rectangulaires double bande et multi-bandes tenant compte de l'effet de couplage. [texte imprimé] / Leila Chouti, Auteur ; Abdelmadjid Benghalia, Directeur de thèse . - 13/01/2009 . - Constantine : Université Mentouri Constantine, 2009 . - 81 f. ; 30 cm.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Micro-ondes Antennes imprimées Effet de couplage Index. décimale : 621 Electronique Résumé : In this memory, we are interested in the characterization of a rectangular microstrip antenna. Initially we use an integral method, method of moments which enabled us to exploit the spectral tensor of Green. The resolution of the integral equations of the electric field by the procedure of Galerkin makes it possible to lead to a system of equations homogenous from which we calculate the frequency of resonance, the others parameters of the micro strip antenna like; the factor of quality, the band width and the radiated field, are deduced.
An analysis of printed antennas feeded and disposed on periodic etwork, while taking account of the effect of coupling, was treated.
The coupling between two elements was taken into account. The study was extended to the calculation of the coupling between several elements in a general configuration. The diagram of radiation of a network of antennas microrubans depends on the determination of the current of each antenna supply; we employ the method of moments to compute the matrix potantiel and mutual impedance between microstrip
antennas.The numerical results obtained, show that the coupling is very significant when the two antennas are close, but when the distance is large, the coefficient of coupling east decreases.Note de contenu : Annexe. Diplôme : Magistère En ligne : ../theses/electronique/CHO5273.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2811 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHO/5273 CHO/5273 Thèse Bibliothèque principale Thèses Disponible
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