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 Electronique
Tags :	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 :	pdf
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 Electronique
Tags :	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 :	pdf
Permalink :	index.php?lvl=notice_display&id=10516