{"id":57760,"date":"2023-06-05T14:29:41","date_gmt":"2023-06-05T12:29:41","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=57760"},"modified":"2023-06-06T10:34:46","modified_gmt":"2023-06-06T08:34:46","slug":"these-de-abdelghafour-sid-electronique-radio-frequence-flexible-a-base-de-substrats-biosources","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/agenda\/these-de-abdelghafour-sid-electronique-radio-frequence-flexible-a-base-de-substrats-biosources.html","title":{"rendered":"Th\u00e8se de Abdelghafour Sid : \u00ab\u00a0\u00c9lectronique radio-fr\u00e9quence flexible \u00e0 base de substrats biosourc\u00e9s\u00a0\u00bb"},"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_551k32kj2p3b\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" 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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-57760'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-a13cfb60c9523fd057797757c5c366a4\">\n#top .av-special-heading.av-av_heading-a13cfb60c9523fd057797757c5c366a4{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-av_heading-a13cfb60c9523fd057797757c5c366a4 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-a13cfb60c9523fd057797757c5c366a4 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-a13cfb60c9523fd057797757c5c366a4 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\"  >Th\u00e8se de Abdelghafour Sid : \u00ab\u00a0\u00c9lectronique radio-fr\u00e9quence flexible \u00e0 base de substrats biosourc\u00e9s\u00a0\u00bb<\/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>Abdelghafour SID<br \/>\n<\/strong><\/p>\n<p>Soutenance : 12 Juin 2023 \u00e0 13h30<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>\n<div>Prof. Pascal XAVIER Universit\u00e9 Grenoble Alpes, IMEP-LAHC Rapporteur<\/div>\n<div>Dr. Marjorie GRZESKOWIAK INSA de Toulouse, LAAS Rapporteur<\/div>\n<div>Dr. Thibaut DELERUYELLE Universit\u00e9 Aix-Marseille, IM2NP Examinateur<\/div>\n<div>Prof. Kamal LMIMOUNI Universit\u00e9 de Lille, IEMN Examinateur<\/div>\n<div>Dr. Pierre-Yves CRESSON Universit\u00e9 d\u2019Artois, IEMN Examinateur<\/div>\n<div>Prof. Tuami LASRI Universit\u00e9 de Lille, IEMN Directeur de th\u00e8se<\/div>\n<div>Prof. Nicolas JOLY Universit\u00e9 d\u2019Artois, UT&amp;A Invit\u00e9<\/div>\n<\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>L\u2019\u00e9lectronique radio-fr\u00e9quence (RF) flexible est en pleine croissance compte tenu des nombreuses applications possibles dans un grand nombre de domaines. En effet, la possibilit\u00e9 de disposer de circuits RF souples et conformables ouvre des perspectives dans des domaines aussi vari\u00e9s que, par exemple, les communications, l\u2019automobile, les capteurs, les loisirs et la sant\u00e9. Cette technologie repose sur l\u2019utilisation de mat\u00e9riaux souples, utilis\u00e9s comme substrats, capables de r\u00e9sister aux contraintes m\u00e9caniques susceptibles d\u2019\u00eatre rencontr\u00e9es dans les applications vis\u00e9es. G\u00e9n\u00e9ralement, ces mat\u00e9riaux sont des polym\u00e8res p\u00e9trosourc\u00e9s. Aussi, dans la perspective de r\u00e9duire d\u2019une part la d\u00e9pendance vis-\u00e0-vis du p\u00e9trole et d\u2019autre part la quantit\u00e9 des d\u00e9chets \u00e9lectroniques, l\u2019int\u00e9gration de polym\u00e8res biosourc\u00e9s dans des syst\u00e8mes RF est envisag\u00e9e. Plus particuli\u00e8rement, nous proposons dans ce travail de th\u00e8se de fabriquer des dispositifs RF sur un substrat original, le laurate de cellulose. Ce dernier permet ainsi de participer au d\u00e9veloppement d\u2019une \u00e9lectronique RF souple mais aussi plus verte. Ce m\u00e9moire de th\u00e8se aborde dans un premier temps la caract\u00e9risation du laurate de cellulose. Une attention particuli\u00e8re est accord\u00e9e \u00e0 la d\u00e9termination de ses propri\u00e9t\u00e9s di\u00e9lectriques sur une bande de fr\u00e9quence allant de 0.5 GHz \u00e0 67 GHz. Ensuite, nous pr\u00e9sentons un filtre passe bande flexible de fr\u00e9quence centrale 2.45 GHz fabriqu\u00e9 sur ce substrat biopolym\u00e8re en utilisant une m\u00e9thode bas\u00e9e sur la structuration par laser d\u2019un film de cuivre autocollant. Dans la foul\u00e9e, sont expos\u00e9s les r\u00e9sultats de caract\u00e9risation d\u2019une antenne double bande (2.45 GHz et 5.8 GHz) flexible r\u00e9alis\u00e9e sur laurate de cellulose pour des applications WBAN (Wireless Body Area Network). L\u2019\u00e9valuation des performances de ces dispositifs, sous diff\u00e9rents types de contraintes m\u00e9caniques, a montr\u00e9 des d\u00e9gradations minimales de leurs caract\u00e9ristiques RF (coefficient de r\u00e9flexion, bande passante et diagramme de rayonnement). Enfin, nous exposons dans une derni\u00e8re partie les r\u00e9sultats d\u2019un syst\u00e8me de r\u00e9cup\u00e9ration d\u2019\u00e9nergie \u00e9lectromagn\u00e9tique (rectenna) double bande (2.45 GHz et 5.8 GHz) flexible fabriqu\u00e9 sur ce m\u00eame substrat biopolym\u00e8re.<\/p>\n<h5>Abstract:<\/h5>\n<p>Flexible radio-frequency (RF) electronics is a rapidly growing technology given its many possible applications in a wide range of fields. In fact, the ability to have flexible and conformable RF circuits opens up possibilities in diverse areas such as communications, automotive, sensors, leisure, and healthcare. This technology is based on the exploitation of flexible materials used as substrates capable of withstanding mechanical stresses that may be encountered in the targeted applications. Typically, these materials are petro-based polymers. However, in the perspective of reducing dependence on petroleum and reducing electronic waste, the use of bio-based polymers is being considered. More specifically, in this doctoral work, we propose to manufacture RF devices on an original substrate for this type of applications, the cellulose laurate. We demonstrate that this material brings a promising contribution to the development of a flexible and greener RF electronics. This doctoral dissertation first focuses on the characterization of cellulose laurate. Particular attention is given to determining its dielectric properties over a frequency range spanning from 0.5 GHz to 67 GHz. Next, we present a flexible band-pass filter with a center frequency of 2.45 GHz fabricated on this biopolymer substrate using a laser structuring method and adhesive copper film. Additionally, we present the characterization results of a flexible dual-band antenna (2.45 GHz and 5.8 GHz) made on the same substrate for WBAN (Wireless Body Area Network) applications. The performance evaluation of these two devices under different types of mechanical stress showed minimal degradation of their RF characteristics (reflection coefficient, bandwidth and radiation patterns). Finally, we present the results of a flexible dualband (2.45 GHz and 5.8 GHz) electromagnetic energy harvesting system (Rectenna) fabricated on the same biopolymer substrate.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":57765,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87,65,84,187,318],"tags":[],"class_list":["post-57760","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agenda-en","category-agenda","category-agenda-en-en","category-annonces-these","category-these-2023"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/57760","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=57760"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/57760\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/57765"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=57760"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=57760"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=57760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}