{"id":78181,"date":"2026-05-05T11:47:13","date_gmt":"2026-05-05T09:47:13","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=78181"},"modified":"2026-05-05T11:47:13","modified_gmt":"2026-05-05T09:47:13","slug":"towards-360-connectivity-in-the-thz-band","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/newsletter\/towards-360-connectivity-in-the-thz-band.html","title":{"rendered":"Towards 360\u00b0 connectivity in the THz band"},"content":{"rendered":"<div  class='flex_column av-zsm065-d26565e60dd9076009d6b66c3b966227 av_one_full  avia-builder-el-0  el_before_av_hr  avia-builder-el-first  first flex_column_div'     ><section  class='av_textblock_section av-m7bk6phv-8fe1cc924030f7a0a163e3c78e33e973'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_78163\" style=\"width: 910px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/05\/guillaume-G.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-78163\" class=\"wp-image-78163\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/05\/guillaume-G.png\" alt=\"\" width=\"900\" height=\"319\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/05\/guillaume-G.png 908w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/05\/guillaume-G-300x106.png 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/05\/guillaume-G-768x272.png 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/05\/guillaume-G-18x6.png 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/05\/guillaume-G-705x250.png 705w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/a><p id=\"caption-attachment-78163\" class=\"wp-caption-text\">Spatial distribution of THz wave radiation: Each frequency is radiated into space at angles determined by the design of the leaky THz topological waveguide.<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-t8q2al-1f6fd9a4603c87b3a9cd66e871248fff\">\n#top .hr.hr-invisible.av-t8q2al-1f6fd9a4603c87b3a9cd66e871248fff{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-t8q2al-1f6fd9a4603c87b3a9cd66e871248fff hr-invisible  avia-builder-el-2  el_after_av_one_full  el_before_av_textblock'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-m6jef3f8-4b1f1086f555bb536f399d768a41c089'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1 style=\"text-align: center;\">Towards 360\u00b0 connectivity in the THz band<\/h1>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6jek97m-d8c369afffaa9aa359e294478e3cc8e3\">\n#top .hr.av-m6jek97m-d8c369afffaa9aa359e294478e3cc8e3{\nmargin-top:30px;\nmargin-bottom:30px;\n}\n.hr.av-m6jek97m-d8c369afffaa9aa359e294478e3cc8e3 .hr-inner{\nwidth:200px;\nborder-color:#ead146;\nmax-width:45%;\n}\n.hr.av-m6jek97m-d8c369afffaa9aa359e294478e3cc8e3 .av-seperator-icon{\ncolor:#ead146;\n}\n<\/style>\n<div  class='hr av-m6jek97m-d8c369afffaa9aa359e294478e3cc8e3 hr-custom  avia-builder-el-4  el_after_av_textblock  el_before_av_three_fifth  hr-center hr-icon-yes'><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><span class='av-seperator-icon' aria-hidden='true' data-av_icon='\ue883' data-av_iconfont='entypo-fontello'><\/span><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6jdpaok-10e8a6484a4997dde178a9071809fd7b\">\n@keyframes av_boxShadowEffect_av-m6jdpaok-10e8a6484a4997dde178a9071809fd7b-column {\n0%   { box-shadow:  0 0 0 0 #c9c9c9; opacity: 1; }\n100% { box-shadow:  0 0 10px 0 #c9c9c9; opacity: 1; }\n}\n.flex_column.av-m6jdpaok-10e8a6484a4997dde178a9071809fd7b{\nbox-shadow: 0 0 10px 0 #c9c9c9;\nborder-width:1px;\nborder-color:#d8d458;\nborder-style:solid;\nborder-radius:15px 15px 15px 15px;\npadding:20px 20px 20px 20px;\nbackground-color:#e8e8e8;\n}\n.flex_column.av-m6jdpaok-10e8a6484a4997dde178a9071809fd7b .avia-divider-svg-top{\nleft:-1px;\nright:-1px;\nwidth:auto;\ntop:-1px;\nborder-radius:15px 15px 0 0;\n}\n.flex_column.av-m6jdpaok-10e8a6484a4997dde178a9071809fd7b .avia-divider-svg-top svg{\nheight:20px;\nwidth:calc(100% + 1.3px);\nfill:#ead146;\n}\n<\/style>\n<div  class='flex_column av-m6jdpaok-10e8a6484a4997dde178a9071809fd7b av_three_fifth  avia-builder-el-5  el_after_av_hr  el_before_av_two_fifth  first flex_column_div shadow-not-animated'     ><div class='avia-divider-svg avia-divider-svg-arrow avia-divider-svg-top avia-svg-original'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 700 10\" preserveaspectratio=\"none\">\n\t<path d=\"M350,10L340,0h20L350,10z\"\/>\n<\/svg><\/div><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6jdswo0-e63a1ab9558d0f038f3210deb76b9b3d\">\n#top .av_textblock_section.av-m6jdswo0-e63a1ab9558d0f038f3210deb76b9b3d .avia_textblock{\ntext-align:justify;\n}\n<\/style>\n<section  class='av_textblock_section av-m6jdswo0-e63a1ab9558d0f038f3210deb76b9b3d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p class=\"Standard\"><strong><a href=\"https:\/\/www.nature.com\/articles\/s41598-024-53082-4\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #ff7b00;\"><span style=\"color: #008080;\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mqde7m-a9a9bccc93978188eead63973ed82412\">\n.av_font_icon.av-mqde7m-a9a9bccc93978188eead63973ed82412{\ncolor:#ead146;\nborder-color:#ead146;\n}\n.av_font_icon.av-mqde7m-a9a9bccc93978188eead63973ed82412 .av-icon-char{\nfont-size:25px;\nline-height:25px;\n}\n<\/style>\n<span  class='av_font_icon av-mqde7m-a9a9bccc93978188eead63973ed82412 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='\ue889' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/span><\/span><\/a><\/strong><\/p>\n<p>Communications in the millimeter wave and THz bands, offering significant data transfer capabilities, aim to extend existing E-band systems (71-76 and 81-86 GHz). The primary use case to date is supporting core radio deployments for 5G and 6G networks. To this end, direct point-to-point links in new bands (beyond 100 GHz) are under development, with deployments planned in the D-band (140-150 GHz) by 2030 and beyond (H-band, 300 GHz) by 2035-2040.<\/p>\n<p>Beyond this use case, which employs traditional beam-focusing antennas, indoor applications are also being studied. These require different approaches for wave radiation, that has to be designed to close the link budget between transmitter and receiver. Such applications require less directional antennas, featuring wider beamwidth, ideally up to 360\u00b0 for full space connectivity. Among possible approaches, the use of leaky topological waveguides whose radiation direction depends on the frequency plays a role. In this work, conducted with our partners at NTU Singapore and the University of Notre Dame-USA, the CNRS both characterized THz devices and enabled the implementation of a proof of concept (PoC) for the three-dimensional radiation of the leaky waveguide, which is made of silicon. This leaky waveguide, coupled with THz converters (photomixing), enables the functionalization of the THz source, making it possible to radiate the signal over a large area with a spatial distribution defined by the design of the radiating device. Spatial signal distribution performance ranging from 20 to 28 Gbit\/s, and from 310 to 335 GHz, has been achieved with the device, paving the way for spatially distributed point-to-multipoint THz links.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-pkjtzx-3c922e11c23e1cdc10de52bd8a936ffa\">\n@keyframes av_boxShadowEffect_av-pkjtzx-3c922e11c23e1cdc10de52bd8a936ffa-column {\n0%   { box-shadow:  0 0 0 0 #d8d8d8; opacity: 1; }\n100% { box-shadow:  0 0 10px 0 #d8d8d8; opacity: 1; }\n}\n.flex_column.av-pkjtzx-3c922e11c23e1cdc10de52bd8a936ffa{\nbox-shadow: 0 0 10px 0 #d8d8d8;\nborder-width:1px;\nborder-color:#ead146;\nborder-style:solid;\nborder-radius:15px 15px 15px 15px;\npadding:20px 20px 20px 20px;\n}\n<\/style>\n<div  class='flex_column av-pkjtzx-3c922e11c23e1cdc10de52bd8a936ffa av_two_fifth  avia-builder-el-8  el_after_av_three_fifth  avia-builder-el-last  flex_column_div shadow-not-animated'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-qo30kd-564b98bd2db5e669049eb4590ffcdb66\">\n#top .hr.hr-invisible.av-qo30kd-564b98bd2db5e669049eb4590ffcdb66{\nheight:25px;\n}\n<\/style>\n<div  class='hr av-qo30kd-564b98bd2db5e669049eb4590ffcdb66 hr-invisible  avia-builder-el-9  el_before_av_textblock  avia-builder-el-first'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-m6je9ub6-2b241e8a69fef25c12221b3f2c441c5c'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2><span style=\"color: #ead146;\">R\u00e9f\u00e9rence<\/span><\/h2>\n<p>On-chip topological leaky-wave antenna for full-space terahertz wireless connectivity<\/p>\n<p>Nature Photonics 20, 317\u2013323 (2026)<\/p>\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41566-025-01825-8\"><strong><span style=\"color: #ead146;\">https:\/\/www.nature.com\/articles\/s41566-025-01825-8<\/span><\/strong><\/a><\/p>\n<p><span style=\"text-decoration: underline;\">Contact Us<\/span>: Guillaume.ducounau<img loading=\"lazy\" decoding=\"async\" class=\"align=absbottom wp-image-73335 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/05\/arobase6.png\" alt=\"\" width=\"16\" height=\"14\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/05\/arobase6.png 16w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/05\/arobase6-14x12.png 14w\" sizes=\"auto, (max-width: 16px) 100vw, 16px\" \/>univ-lille.fr<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6kg6dp4-cdb16a1ca5241aeac82523099100c8d2\">\n#top .hr.av-m6kg6dp4-cdb16a1ca5241aeac82523099100c8d2{\nmargin-top:30px;\nmargin-bottom:30px;\n}\n.hr.av-m6kg6dp4-cdb16a1ca5241aeac82523099100c8d2 .hr-inner{\nwidth:50px;\nmax-width:45%;\n}\n<\/style>\n<div  class='hr av-m6kg6dp4-cdb16a1ca5241aeac82523099100c8d2 hr-custom  avia-builder-el-11  el_after_av_textblock  avia-builder-el-last  hr-center hr-icon-yes'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><span class='av-seperator-icon' aria-hidden='true' data-av_icon='\ue84e' data-av_iconfont='entypo-fontello'><\/span><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p><\/div>","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":[297],"tags":[],"class_list":["post-78181","post","type-post","status-publish","format-standard","hentry","category-newsletter"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78181","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=78181"}],"version-history":[{"count":6,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78181\/revisions"}],"predecessor-version":[{"id":78243,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78181\/revisions\/78243"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=78181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=78181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=78181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}