{"id":55585,"date":"2022-12-01T18:08:41","date_gmt":"2022-12-01T16:08:41","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=55585"},"modified":"2022-12-01T18:08:41","modified_gmt":"2022-12-01T16:08:41","slug":"these-r-hubert-interface-thermique-materiaux-a-changement-de-phase-a-haute-conductivite-thermique-pour-le-management-thermique-des-composants-electroniques-de-puissance","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/theses-2022\/these-r-hubert-interface-thermique-materiaux-a-changement-de-phase-a-haute-conductivite-thermique-pour-le-management-thermique-des-composants-electroniques-de-puissance.html","title":{"rendered":"THESE :  R. HUBERT \u2013 Interface thermique \u2013 mat\u00e9riaux \u00e0 changement de phase \u00e0 haute conductivit\u00e9 thermique pour le management thermique des composants \u00e9lectroniques de puissance"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_cdwr8pd2f37r\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-55585'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lb59tifq-8acdc759b8adc0c7ae352c4db2e38f2c\">\n#top .av-special-heading.av-lb59tifq-8acdc759b8adc0c7ae352c4db2e38f2c{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-lb59tifq-8acdc759b8adc0c7ae352c4db2e38f2c .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-lb59tifq-8acdc759b8adc0c7ae352c4db2e38f2c .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-lb59tifq-8acdc759b8adc0c7ae352c4db2e38f2c av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : R. HUBERT &#8211; Interface thermique &#8211; mat\u00e9riaux \u00e0 changement de phase \u00e0 haute conductivit\u00e9 thermique pour le management thermique des composants \u00e9lectroniques de puissance <\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<p><strong>R. HUBERT<\/strong><\/p>\n<p>Soutenance : <span class=\"titre\">12 janvier<\/span> <span class=\"annee_parution\">2022<\/span><strong><br \/>\n<\/strong><span class=\"titre\">Th\u00e8se de doctorat en Micro-nanosyst\u00e8mes et capteurs, Centrale Lille, ENGSYS Sciences de l\u2019ing\u00e9nierie et des syst\u00e8mes, <\/span><\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5>Summary:<\/h5>\n<p>Les mat\u00e9riaux \u00e0 changement de phase (PCM) sont largement utilis\u00e9s du fait de leur forte chaleur latente de fusion pour des application de management thermique. Malgr\u00e9 cela, les PCM p\u00e2tissent de leur faible conductivit\u00e9 thermique qui limite la propagation de la chaleur autour de la source. Sans am\u00e9lioration notable de la conductivit\u00e9, la fusion n\u2019a lieu qu\u2019autour de la source de chaleur limitant grandement les performances du dispositif. Pour parer \u00e0 cela, une multitude de renforts thermiques ont \u00e9t\u00e9 d\u00e9velopp\u00e9s et \u00e9tudi\u00e9s ces derniers ann\u00e9es. Une revue de litt\u00e9rature d\u00e9taille l\u2019\u00e9tude de ces diff\u00e9rents renforts ainsi que de leur performances lorsqu\u2019ils sont combin\u00e9s aux PCM dans le premier chapitre de ce manuscrit. Le deuxi\u00e8me chapitre pr\u00e9sente, lui, un nouveau renfort bas\u00e9 sur l\u2019utilisation de lattices m\u00e9talliques ainsi qu\u2019un mod\u00e8le permettant d\u2019\u00e9valuer ses propri\u00e9t\u00e9s thermiques. Une comparaison avec des renforts existants, tels que des mousses m\u00e9talliques, montre une augmentation des propri\u00e9t\u00e9s thermique allant jusqu\u2019\u00e0 75%. Le chapitre suivant \u00e9tudie l\u2019utilisation d\u2019un tel renfort pour le management thermique d\u2019un cas concret, de fa\u00e7on th\u00e9orique et exp\u00e9rimentale en pr\u00e9sentant une s\u00e9rie de param\u00e8tre permettant l\u2019optimisation du dispositif. Lors de cette derni\u00e8re apparait la n\u00e9cessit\u00e9 d\u2019utiliser un mod\u00e8le dit<\/p>\n<h5>Abstract:<\/h5>\n<p>Phase change materials (PCM) are widely used due to their high latent heat of fusion for thermal management applications. Despite this, PCMs suffer from their low thermal conductivity which limits the propagation of heat around the source. Without a significant improvement in conductivity, melting only takes place around the heat source, greatly limiting the performance of the device. To counter this, a multitude of thermal reinforcements have been developed and studied in recent years. A literature review details the study of these different reinforcements and their performances when combined with PCMs in the first chapter of this manuscript. The second chapter presents a new reinforcement based on the use of metal lattices as well as a model to evaluate its thermal properties. A comparison with existing reinforcements, such as metallic foams, shows an increase in thermal properties of up to 75%. The following chapter studies the use of such a reinforcement for the thermal management of a concrete case, in a theoretical and experimental way by presenting a series of parameters allowing the optimization of the device. During the latter, the need to use a model called<\/p>\n<\/div><\/section>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='layer_slider_2'  class='avia-layerslider main_color avia-shadow  avia-builder-el-7  el_after_av_textblock  el_before_av_heading  slider-not-first container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_7ntxhz7g5mkj\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_2'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-55585'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc\">\n#top .av-special-heading.av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc av-special-heading-h2  avia-builder-el-8  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : Sara BRETIN \u2013 Communications aux fr\u00e9quences terahertz : Applications \u00e0 la vid\u00e9o haute d\u00e9finition temps r\u00e9el.<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-9  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<p><strong>Sara BRETIN<\/strong><\/p>\n<p>Soutenance : 25 septembre 2019 \u00e0 14h00<strong><br \/>\n<\/strong>IEMN Amphitheatre - Central Laboratory - Villeneuve d'Ascq<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-13  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury :<\/span><\/strong><\/h5>\n<ul>\n<li>Nathalie Rolland, Professeur, Universit\u00e9 de Lille.<\/li>\n<li>Anne-Laure Billabert, Ma\u00eetre de conf\u00e9rences HDR, ESYCOME le Cnam Paris.<\/li>\n<li>Mohammed Himdi, Professeur, IETR Rennes.<\/li>\n<li>St\u00e9phane Blin, Ma\u00eetre de conf\u00e9rences HDR, IES Montpellier.<\/li>\n<li>Rose-Marie Sauvage, Encadrant Direction G\u00e9n\u00e9rale de l\u2019Armement (DGA), Invit\u00e9.<\/li>\n<li>Malek Zegaoui, Ing\u00e9nieur de Recherche, CNRS, Invit\u00e9.<\/li>\n<li>Guillaume Ducournau, Professeur, Universit\u00e9 de Lille, Directeur de th\u00e8se.<\/li>\n<li>Mohammed Zaknoune, Directeur de Recherche, CNRS, Co-directeur de th\u00e8se.<\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>Les communications aux fr\u00e9quences terahertz sont \u00e9tudi\u00e9es dans un contexte de transmissions en espace libre. L\u2019objectif de la th\u00e8se est de proposer une \u00e9tude comparative de diff\u00e9rentes topologies d\u2019\u00e9lectrodes sup\u00e9rieures appliqu\u00e9es aux photodiodes UTC ainsi qu\u2019un module d\u2019int\u00e9gration de ces composants. Ces composants permettent de r\u00e9aliser des liens de communications sans fils aux fr\u00e9quences terahertz. Ce travail pr\u00e9sente une \u00e9tude th\u00e9orique, num\u00e9rique et exp\u00e9rimentale des photodiodes UTC r\u00e9alis\u00e9es. Une \u00e9lectrode sup\u00e9rieure d\u00e9di\u00e9e avec diff\u00e9rents motifs a \u00e9t\u00e9 d\u00e9velopp\u00e9e afin de limiter la d\u00e9pendance \u00e0 la polarisation optique de la structure et d\u2019en augmenter la fiabilit\u00e9 dans un contexte de transmission de donn\u00e9es vid\u00e9os aux fr\u00e9quences terahertz. Un module d\u2019int\u00e9gration d\u00e9di\u00e9, en guide WR-3, pour ces photodiodes, est \u00e9tudi\u00e9 num\u00e9riquement sous le logiciel CST ainsi qu\u2019un package sur antenne et des lignes de transmission au r\u00e9cepteur. Enfin, les liens terahertz r\u00e9alis\u00e9s ont permis d\u2019atteindre des distances jusqu\u2019\u00e0 800 m\u00e8tres en situation de transmission vid\u00e9o 4K en espace libre.<\/p>\n<h5>Abstract:<\/h5>\n<p>The terahertz frequency communications are studied in a context of free space transmissions. The objective of this thesis is to propose a comparative study of different topologies of top electrode applied to UTC photodiode and a module for packaging this type of components. Those components permit to produce wireless communications links at terahertz frequencies. This work presents a theoretical, numerical and experimental study of UTC photodiodes. The use of a dedicated top contact and the study of different patterns are developed in order to limit the optical polarization dependence of this structure, in order to increase the reliability in a context of data video transmission at terahertz frequencies. A dedicated WR-3 packaging module for these photodiodes is studied numerically under CST software and package on antennas and lines of transmission are studied in receiver. Finally, the terahertz links permits to reach 800 meters for a wireless transmission of 4K video.<\/p>\n<\/div><\/section>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='layer_slider_3'  class='avia-layerslider main_color avia-shadow  avia-builder-el-14  el_after_av_textblock  el_before_av_heading  slider-not-first container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_1wju1sjdvchgz\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_3'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-55585'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc\">\n#top .av-special-heading.av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-af79f94ba8da5ac6ab4dc07dbf86e7dc av-special-heading-h2  avia-builder-el-15  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : Sara BRETIN \u2013 Communications aux fr\u00e9quences terahertz : Applications \u00e0 la vid\u00e9o haute d\u00e9finition temps r\u00e9el.<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-16  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<p><strong>Sara BRETIN<\/strong><\/p>\n<p>Soutenance : 25 septembre 2019 \u00e0 14h00<strong><br \/>\n<\/strong>IEMN Amphitheatre - Central Laboratory - Villeneuve d'Ascq<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-20  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury :<\/span><\/strong><\/h5>\n<ul>\n<li>Nathalie Rolland, Professeur, Universit\u00e9 de Lille.<\/li>\n<li>Anne-Laure Billabert, Ma\u00eetre de conf\u00e9rences HDR, ESYCOME le Cnam Paris.<\/li>\n<li>Mohammed Himdi, Professeur, IETR Rennes.<\/li>\n<li>St\u00e9phane Blin, Ma\u00eetre de conf\u00e9rences HDR, IES Montpellier.<\/li>\n<li>Rose-Marie Sauvage, Encadrant Direction G\u00e9n\u00e9rale de l\u2019Armement (DGA), Invit\u00e9.<\/li>\n<li>Malek Zegaoui, Ing\u00e9nieur de Recherche, CNRS, Invit\u00e9.<\/li>\n<li>Guillaume Ducournau, Professeur, Universit\u00e9 de Lille, Directeur de th\u00e8se.<\/li>\n<li>Mohammed Zaknoune, Directeur de Recherche, CNRS, Co-directeur de th\u00e8se.<\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>Les communications aux fr\u00e9quences terahertz sont \u00e9tudi\u00e9es dans un contexte de transmissions en espace libre. L\u2019objectif de la th\u00e8se est de proposer une \u00e9tude comparative de diff\u00e9rentes topologies d\u2019\u00e9lectrodes sup\u00e9rieures appliqu\u00e9es aux photodiodes UTC ainsi qu\u2019un module d\u2019int\u00e9gration de ces composants. Ces composants permettent de r\u00e9aliser des liens de communications sans fils aux fr\u00e9quences terahertz. Ce travail pr\u00e9sente une \u00e9tude th\u00e9orique, num\u00e9rique et exp\u00e9rimentale des photodiodes UTC r\u00e9alis\u00e9es. Une \u00e9lectrode sup\u00e9rieure d\u00e9di\u00e9e avec diff\u00e9rents motifs a \u00e9t\u00e9 d\u00e9velopp\u00e9e afin de limiter la d\u00e9pendance \u00e0 la polarisation optique de la structure et d\u2019en augmenter la fiabilit\u00e9 dans un contexte de transmission de donn\u00e9es vid\u00e9os aux fr\u00e9quences terahertz. Un module d\u2019int\u00e9gration d\u00e9di\u00e9, en guide WR-3, pour ces photodiodes, est \u00e9tudi\u00e9 num\u00e9riquement sous le logiciel CST ainsi qu\u2019un package sur antenne et des lignes de transmission au r\u00e9cepteur. Enfin, les liens terahertz r\u00e9alis\u00e9s ont permis d\u2019atteindre des distances jusqu\u2019\u00e0 800 m\u00e8tres en situation de transmission vid\u00e9o 4K en espace libre.<\/p>\n<h5>Abstract:<\/h5>\n<p>The terahertz frequency communications are studied in a context of free space transmissions. The objective of this thesis is to propose a comparative study of different topologies of top electrode applied to UTC photodiode and a module for packaging this type of components. Those components permit to produce wireless communications links at terahertz frequencies. This work presents a theoretical, numerical and experimental study of UTC photodiodes. The use of a dedicated top contact and the study of different patterns are developed in order to limit the optical polarization dependence of this structure, in order to increase the reliability in a context of data video transmission at terahertz frequencies. A dedicated WR-3 packaging module for these photodiodes is studied numerically under CST software and package on antennas and lines of transmission are studied in receiver. Finally, the terahertz links permits to reach 800 meters for a wireless transmission of 4K video.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[316],"tags":[],"class_list":["post-55585","post","type-post","status-publish","format-standard","hentry","category-theses-2022"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=55585"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55585\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=55585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=55585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=55585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}