{"id":42310,"date":"2020-08-31T11:20:53","date_gmt":"2020-08-31T09:20:53","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=42310"},"modified":"2020-08-31T11:20:53","modified_gmt":"2020-08-31T09:20:53","slug":"these-romain-pecheux-optimisation-de-la-technologie-gan-pour-lamplification-de-puissance-en-bande-ku-specifique-aux-applications-senseurs-aeroportes","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/articles-temporaires\/these-romain-pecheux-optimisation-de-la-technologie-gan-pour-lamplification-de-puissance-en-bande-ku-specifique-aux-applications-senseurs-aeroportes.html","title":{"rendered":"THESE : Romain PECHEUX \u2013 Optimisation de la technologie GaN pour l\u2019amplification de puissance en bande Ku sp\u00e9cifique aux applications senseurs a\u00e9roport\u00e9s"},"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_azbz3b6x1dl6\" 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-42310'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-keib4zdw-858dff543957bc944688673acd2bb8bd\">\n#top .av-special-heading.av-keib4zdw-858dff543957bc944688673acd2bb8bd{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-keib4zdw-858dff543957bc944688673acd2bb8bd .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-keib4zdw-858dff543957bc944688673acd2bb8bd .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-keib4zdw-858dff543957bc944688673acd2bb8bd 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 : Romain PECHEUX \u2013 Optimisation de la technologie GaN pour l\u2019amplification de puissance en bande Ku sp\u00e9cifique aux applications senseurs a\u00e9roport\u00e9s<\/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>Romain PECHEUX<\/strong><\/p>\n<p>Soutenance : 22 septembre 2020 \u00e0 10h00<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-6  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>Farid MEDJDOUB, CR, Universit\u00e9 de Lille, Directeur de th\u00e8se<\/li>\n<li>Jean-Guy TARTARIN, Professeur, Laboratoire d\u2019analyse et d\u2019architecture des syst\u00e8mes (LAAS-CNRS), Rapporteur<\/li>\n<li>Olivier LATRY, Professeur, Groupe de Physique des Mat\u00e9riaux (GPM), Rapporteur<\/li>\n<li>Didier THERON, Directeur de recherche, IEMN, Laboratoire central, Examinateur<\/li>\n<li>Nathalie MALBERT, Professeur, IMS \u2013 Laboratoire de l\u2019Int\u00e9gration du Mat\u00e9riau au Syst\u00e8me, Examinateur<\/li>\n<li>Guillaume DUCOURNAU, Professeur des Universit\u00e9s, Universit\u00e9 de Lille, CoDirecteur de th\u00e8se<\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>Du fait des propri\u00e9t\u00e9s exceptionnelles du Nitrure de Gallium (GaN), les transistors HEMTs \u00e0 base de GaN sont des candidats prometteurs pour les applications de puissance fonctionnant en gamme d\u2019onde millim\u00e9trique. Cette technologie \u00e9mergente est particuli\u00e8rement attractive pour les senseurs a\u00e9roport\u00e9s d\u00e9velopp\u00e9s par Thales et pourrait, \u00e0 terme, remplacer les amplificateurs \u00e0 tube employ\u00e9s jusque-l\u00e0. Cependant, des probl\u00e8mes inh\u00e9rents \u00e0 cette fili\u00e8re de composants subsistent, requ\u00e9rant l\u2019optimisation de cette technologie notamment dans le cadre de la r\u00e9duction des dimensions des transistors pour la mont\u00e9e en fr\u00e9quence. Outre les performances RF en puissance, la stabilit\u00e9 impulsion \u00e0 impulsion (P2P) est une figure de m\u00e9rite cl\u00e9 des senseurs a\u00e9roport\u00e9s. La d\u00e9tection et la pr\u00e9cision des param\u00e8tres d\u2019une cible d\u00e9pendent de cette stabilit\u00e9. Mes travaux de th\u00e8se consistaient \u00e0 d\u00e9velopper un banc de mesure fonctionnant en bande Ku et permettant d\u2019extraire sous pointe la stabilit\u00e9 impulsion \u00e0 impulsion de transistors GaN. En lien avec ce banc, une proc\u00e9dure de mesures transitoires en puissance et en courant a \u00e9galement \u00e9t\u00e9 mise en place. J\u2019ai pu \u00e9tudier, dans le contexte des senseurs a\u00e9roport\u00e9s, trois fili\u00e8res de composants industrielles provenant de la compagnie UMS incluant la fili\u00e8re qualifi\u00e9e d\u00e9nomm\u00e9e GH25 (grille de 250nm), la fili\u00e8re GH15 (grille de 150nm) en cours de qualification et la fili\u00e8re GH10 (grille de 100nm) en cours de d\u00e9veloppement. La technologie GaN 100nm \u00e9tant encore en phase exploratoire au niveau mondial, nous avons \u00e9galement \u00e9tudi\u00e9 de nouvelles structures dans le but d\u2019am\u00e9liorer les performances de ces composants de mani\u00e8re fiable tout en limitant les effets de pi\u00e8ges. J\u2019ai ainsi pu montrer que l\u2019h\u00e9t\u00e9rostructure AlN\/GaN, avec une architecture d\u2019\u00e9pitaxie bien choisie, permet d\u2019obtenir des transistors \u00e0 grilles courtes fonctionnant \u00e0 des tensions de drain \u00e9lev\u00e9es (30V) et d\u00e9livrant de fortes densit\u00e9s de puissance (&gt; 4W\/mm) associ\u00e9es \u00e0 de hauts rendements (PAE&gt; 50%) \u00e0 40GHz.<\/p>\n<h5>Abstract:<\/h5>\n<p>Owing to the outstanding properties of Gallium Nitride (GaN), GaN-based HEMTs are promising candidates for power applications operating in the millimetre-wave range. This emerging technology is particularly attractive for the airborne sensors developed by Thales and could eventually replace the travelling-wave tube amplifiers that are currently used. However, there are still issues inherent to this technology, requiring optimisations particularly in the frame of the reduction of the device dimensions targeting higher frequency of operation. In addition to RF power performances, pulse-to-pulse stability (P2P) is a key figure of merit for airborne sensors. The detection and accuracy of parameters from a target depend on this stability. My thesis focused on the development a test bench operating in Ku-band and allowing to extract the pulse-to-pulse stability of GaN transistors directly on-wafer. Linked to this bench, a procedure for power and current transient measurements was also implemented. In the context of airborne sensors, I have studied three types of industrial devices from UMS including the qualified transistors so-called GH25 (gate length of 250nm), the GH15 (gate length of 150nm), which under a final phase of qualification and the GH10 (gate length of 100nm), which is under development. As the 100nm GaN technology is still in an exploratory phase worldwide, we have also studied new structures with the aim of improving the performance of these devices in a reliable way while limiting the trapping effects. I have thus been able to show that the AlN\/GaN heterostructure, with a well-chosen epi-design, allows to obtain short transistors operating at high drain voltages (30V) and delivering high power densities (&gt; 4W\/mm) associated with high efficiencies (PAE&gt; 50%) at 40GHz.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-42310","post","type-post","status-publish","format-standard","hentry","category-articles-temporaires"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/42310","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=42310"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/42310\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=42310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=42310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=42310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}