Détail de l'auteur
Auteur Tayeb A Denidni |
Documents disponibles écrits par cet auteur (4)
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 : 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 : 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 : Etude et conception d’antennes à résonateurs diélectriques : Application à la réalisation d’une antenne reconfigurable Type de document : texte imprimé Auteurs : Abla Behloul èp Bachkhaznadji, Auteur ; Abdelmadjid Benghalia, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 100 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Antennes à résonateur diélectrique méthode des différences finies dans le
domaine temporel (FDTD) effet de couplage antenne reconfigurable en diagramme de
rayonnement Variability Temperature Forest NDVI GIS MODIS Eastern Algeria Cartography هوائي رو رنان عازل طريقة الفروق المحذودة في المجال انسمني (FDTD) هوائي اعادة تشكيم نمط
الاشعاع و تاثير الاقترانIndex. décimale : 621 Electronique Résumé : This work consists of a contribution to the modeling and the conception of dielectric resonator
antennas with application to the realization of reconfigurable antenna. The dielectric resonator
antennas are important antenna for the flexibility and the ease of integration in wireless
systems (WLAN), where they allow to use several shapes (rectangular, triangular,etc) and
several power supplies (coupling slot, coaxial cable,etc.). We are also interested by the
coupling effect due to the presence of another antenna or a presence of a coupling slot. The
calculated program based on the FDTD method to modeling a dielectric resonator antenna, we
enable to calculate the reflection coefficient, the input impedance electrical and the magnetic
fields. The HFSS simulator is used to validate these results. Then, this study has been
extended to the conception and the fabrication of a reconfigurable dielectric resonator
antenna. For this purpose, we studied and simulated a reconfigurable antenna structure by
using two simulator (HFSS, CST), then we proposed another structure which is a triangular
reconfigurable dielectric resonator antenna simulated by CST simulator and fabricated in RF
laboratory, of the National Institute of Scientific Research, INRS, Canada. The numerical
results are presented in terms of the reflection coefficient, radiation pattern, gain, and
efficiency. In addition, we have studied an dielectric resonator antenna with reconfigurable by
diodes PIN. Two distinct radiation patterns were obtained by maintaining the same resonance
frequency, which shows that the insertion of electrically-driven semiconductor components
into the antenna base structure provides an effective means for reconfigurability of the
radiation
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BEH7084.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10517 Etude et conception d’antennes à résonateurs diélectriques : Application à la réalisation d’une antenne reconfigurable [texte imprimé] / Abla Behloul èp Bachkhaznadji, Auteur ; Abdelmadjid Benghalia, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 100 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Antennes à résonateur diélectrique méthode des différences finies dans le
domaine temporel (FDTD) effet de couplage antenne reconfigurable en diagramme de
rayonnement Variability Temperature Forest NDVI GIS MODIS Eastern Algeria Cartography هوائي رو رنان عازل طريقة الفروق المحذودة في المجال انسمني (FDTD) هوائي اعادة تشكيم نمط
الاشعاع و تاثير الاقترانIndex. décimale : 621 Electronique Résumé : This work consists of a contribution to the modeling and the conception of dielectric resonator
antennas with application to the realization of reconfigurable antenna. The dielectric resonator
antennas are important antenna for the flexibility and the ease of integration in wireless
systems (WLAN), where they allow to use several shapes (rectangular, triangular,etc) and
several power supplies (coupling slot, coaxial cable,etc.). We are also interested by the
coupling effect due to the presence of another antenna or a presence of a coupling slot. The
calculated program based on the FDTD method to modeling a dielectric resonator antenna, we
enable to calculate the reflection coefficient, the input impedance electrical and the magnetic
fields. The HFSS simulator is used to validate these results. Then, this study has been
extended to the conception and the fabrication of a reconfigurable dielectric resonator
antenna. For this purpose, we studied and simulated a reconfigurable antenna structure by
using two simulator (HFSS, CST), then we proposed another structure which is a triangular
reconfigurable dielectric resonator antenna simulated by CST simulator and fabricated in RF
laboratory, of the National Institute of Scientific Research, INRS, Canada. The numerical
results are presented in terms of the reflection coefficient, radiation pattern, gain, and
efficiency. In addition, we have studied an dielectric resonator antenna with reconfigurable by
diodes PIN. Two distinct radiation patterns were obtained by maintaining the same resonance
frequency, which shows that the insertion of electrically-driven semiconductor components
into the antenna base structure provides an effective means for reconfigurability of the
radiation
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BEH7084.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10517 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEH/7084 BEH/7084 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude, conception et développement d’antennes compactes pour les applications ULB. Type de document : texte imprimé Auteurs : Boualem Hammache, Auteur ; Abderraouf Messai, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse Mention d'édition : 23-mai-21 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 128 f. Format : 30 cm. Note générale : Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Electronique:Dispositifs et Systèmes pour les Télécommunications Antennes Compactes Ultra Large Bande (ULB) Technologie ULB Antenne Planaire miniaturisation monopole réjections des bandes diagramme de rayonnement coefficient de réflexion polarisation circulaire Compact Antenna Ultra Wide Band (UWB) UWB Technology Planar Antenna miniaturization Notched Band radiation Pattern reflection coefficient circular polarization هوائيات مدمجة النطاق فائق العرض هوائي مستوي التصغير أحادي القطب خصائص رفض النطاق نمط الإشعاع معامل الانعكاس الاستقطاب الدائري Index. décimale : 621 Electronique Résumé :
The objective of this work concerns the study, design and development of compact antennas for Ultra Wide Band (UWB) applications. This work is divided into two essential parts. In the first part, we have presented the theoretical study, characteristics of compact UWB antennas and generalities of UWB technology. We also detailed all the necessary points related to the terms of the UWB compact antennas such as, the bandwidth enlargement of the compact planar antenna, the different geometries of compact antennas and the iniaturization techniques. Then, a state of art on UWB compact antennas was carried out to show the different techniques that are used in compact UWB antennas. The second part of this work is dedicated to the study, development and practical realization of compact UWB antenna structures operating in the 3.1 GHz to 10.6 GHz band. Two different antenna types are studied therein. The first type is a compact hexagonal planar monopole antenna with rejected narrow bands characteristics. This fabricated antenna shows a good agreement between measured and simulated results in terms of radiation pattern and reflection coefficient. The second type is a slot antenna with two feeding types. A compact slot antenna is fed by microstrip line. In this antenna, a stepped slot has been integrated in the ground plane to obtain an ultra-wideband resonance. In order to reject frequency bands, L-shaped slots are etched in the ground plane. After the fabrication process of this antenna, we have compared the measured and simulation results, which were very probatory. The other antenna is fed by coplanar wave guide (CPW) to achieve circular polarization. Both types of antennas have a very compact size compared to other antennas in the literature.
Diplôme : Doctorat En ligne : ../theses/electronique/HAM7757.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11590 Etude, conception et développement d’antennes compactes pour les applications ULB. [texte imprimé] / Boualem Hammache, Auteur ; Abderraouf Messai, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse . - 23-mai-21 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 128 f. ; 30 cm.
Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Electronique:Dispositifs et Systèmes pour les Télécommunications Antennes Compactes Ultra Large Bande (ULB) Technologie ULB Antenne Planaire miniaturisation monopole réjections des bandes diagramme de rayonnement coefficient de réflexion polarisation circulaire Compact Antenna Ultra Wide Band (UWB) UWB Technology Planar Antenna miniaturization Notched Band radiation Pattern reflection coefficient circular polarization هوائيات مدمجة النطاق فائق العرض هوائي مستوي التصغير أحادي القطب خصائص رفض النطاق نمط الإشعاع معامل الانعكاس الاستقطاب الدائري Index. décimale : 621 Electronique Résumé :
The objective of this work concerns the study, design and development of compact antennas for Ultra Wide Band (UWB) applications. This work is divided into two essential parts. In the first part, we have presented the theoretical study, characteristics of compact UWB antennas and generalities of UWB technology. We also detailed all the necessary points related to the terms of the UWB compact antennas such as, the bandwidth enlargement of the compact planar antenna, the different geometries of compact antennas and the iniaturization techniques. Then, a state of art on UWB compact antennas was carried out to show the different techniques that are used in compact UWB antennas. The second part of this work is dedicated to the study, development and practical realization of compact UWB antenna structures operating in the 3.1 GHz to 10.6 GHz band. Two different antenna types are studied therein. The first type is a compact hexagonal planar monopole antenna with rejected narrow bands characteristics. This fabricated antenna shows a good agreement between measured and simulated results in terms of radiation pattern and reflection coefficient. The second type is a slot antenna with two feeding types. A compact slot antenna is fed by microstrip line. In this antenna, a stepped slot has been integrated in the ground plane to obtain an ultra-wideband resonance. In order to reject frequency bands, L-shaped slots are etched in the ground plane. After the fabrication process of this antenna, we have compared the measured and simulation results, which were very probatory. The other antenna is fed by coplanar wave guide (CPW) to achieve circular polarization. Both types of antennas have a very compact size compared to other antennas in the literature.
Diplôme : Doctorat En ligne : ../theses/electronique/HAM7757.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11590 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité HAM/7757 HAM/7757 Thèse Bibliothèque principale Thèses Disponible
Titre : Modelisation et realisation de nouvelles antennes dielectriquqes larges bandes pour les communications sans fil Type de document : texte imprimé Auteurs : Idris Messaoudene, Auteur ; Abdelmadjid Benghalai, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2014 Importance : 154 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Antennes à résonateur diélectrique méthode des différences finies dans le domaine temporel (FDTD) antennes ultra Large Bande(ULB) structures à deux antennes intégrées applications sans fil Dielectric resonator antenna (DRA) finite differences time-domain(FDTD) ultra Wide-Band(UWB) antennas,structure integrated two antennas,wireless applications هوائيات ذات عازل رنان طريقة الفروق المحدودةفي المجال الزمني هوائيات ذات النطاق الفائق هياكل تدمج هوائيين تطبيقات لاسلكية Index. décimale : 621 Electronique Résumé : In this work, we propose contribution to modeling, designing and fabricating new dielectric resonator antennas for wireless applications. The first part is devoted to the theoretical study of the characteristics of this type of antennas, including conical forms, modes of operation and feeding techniques, and the description of the finite differences in the time domain (FDTD) method. Then, this method (FDTD) and two other simulation software ( CST Microwave Studio and Ansoft HFSS ) are used to calculate the electromagnetic characteristics of a new stacked dielectric resonator antenna proposed to operate at the frequency band allocated by the Federal Communications Commission (FCC) for Ultra Wideband (UWB) applications, this band is between 3.1 GHz and 10.6 GHz. The second part of this thesis is focused on the practical implementation of the dielectric resonator antennas for wireless systems. The first fabricated antenna consists of a U-shaped resonator fed by an electric printed monopole. This antenna operates in the UWB spectrum and shows an omni-directional radiation pattern. Finally, two original structures that incorporate two hybrid antennas (dielectric / metal) are designed and manufactured. The two structures -proposed for cognitive radio (CR) applications, detection of weapons systems and medical imaging systems -show a transmission coefficient less than -20 dB, which allows an efficient integration. Diplôme : Doctorat En ligne : ../theses/electronique/MES6588.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9700 Modelisation et realisation de nouvelles antennes dielectriquqes larges bandes pour les communications sans fil [texte imprimé] / Idris Messaoudene, Auteur ; Abdelmadjid Benghalai, Directeur de thèse ; Tayeb A Denidni, Directeur de thèse . - constantine [Algérie] : Université Constantine 1, 2014 . - 154 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Antennes à résonateur diélectrique méthode des différences finies dans le domaine temporel (FDTD) antennes ultra Large Bande(ULB) structures à deux antennes intégrées applications sans fil Dielectric resonator antenna (DRA) finite differences time-domain(FDTD) ultra Wide-Band(UWB) antennas,structure integrated two antennas,wireless applications هوائيات ذات عازل رنان طريقة الفروق المحدودةفي المجال الزمني هوائيات ذات النطاق الفائق هياكل تدمج هوائيين تطبيقات لاسلكية Index. décimale : 621 Electronique Résumé : In this work, we propose contribution to modeling, designing and fabricating new dielectric resonator antennas for wireless applications. The first part is devoted to the theoretical study of the characteristics of this type of antennas, including conical forms, modes of operation and feeding techniques, and the description of the finite differences in the time domain (FDTD) method. Then, this method (FDTD) and two other simulation software ( CST Microwave Studio and Ansoft HFSS ) are used to calculate the electromagnetic characteristics of a new stacked dielectric resonator antenna proposed to operate at the frequency band allocated by the Federal Communications Commission (FCC) for Ultra Wideband (UWB) applications, this band is between 3.1 GHz and 10.6 GHz. The second part of this thesis is focused on the practical implementation of the dielectric resonator antennas for wireless systems. The first fabricated antenna consists of a U-shaped resonator fed by an electric printed monopole. This antenna operates in the UWB spectrum and shows an omni-directional radiation pattern. Finally, two original structures that incorporate two hybrid antennas (dielectric / metal) are designed and manufactured. The two structures -proposed for cognitive radio (CR) applications, detection of weapons systems and medical imaging systems -show a transmission coefficient less than -20 dB, which allows an efficient integration. Diplôme : Doctorat En ligne : ../theses/electronique/MES6588.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9700 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MES/6588 MES/6588 Thèse Bibliothèque principale Thèses Disponible
