{"id":224529,"date":"2012-06-13T22:00:00","date_gmt":"2012-06-13T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/radio-cna-pour-transmetteur-numerique-compatible-toutes-normes-cellulaires-xg-vers-4g\/"},"modified":"2012-06-13T22:00:00","modified_gmt":"2012-06-13T22:00:00","slug":"radio-cna-pour-transmetteur-numerique-compatible-toutes-normes-cellulaires-xg-vers-4g","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/radio-cna-pour-transmetteur-numerique-compatible-toutes-normes-cellulaires-xg-vers-4g\/","title":{"rendered":"Radio-CNA pour transmetteur num\u00e9rique compatible toutes normes cellulaires \u00ab\u00a0xG\u00a0\u00bb vers 4G"},"content":{"rendered":"<p>Bas&eacute;e sur la technologie de synth&egrave;se num&eacute;rique directe DDS (Direct Digital Synthesis) &agrave; base de FPGA, l&rsquo;architecture de ce radio-convertisseur transpose les fonctions du modulateur analogique de quadrature et de l&rsquo;oscillateur local (LO) agile utilis&eacute;s dans les architectures actuelles, dans le domaine num&eacute;rique. Ceci &eacute;limine les d&eacute;fauts de phase et de quadrature ainsi que le mode LO traversant traditionnellement associ&eacute;s &agrave; la sur-conversion analogique. Ce convertisseur simplifie radicalement la conception radio et am&eacute;liore la fiabilit&eacute; des &eacute;metteurs de stations de base.<br \/>\nSes diff&eacute;rents modes de r&eacute;ponse en fr&eacute;quence s&eacute;lectionnables supportent la synth&egrave;se radio directe des bandes cellulaires courantes 3G et 4G dans plusieurs zones Nyquist de 700 MHz &agrave; 2.8 GHz. Un seul de ces composants est capable de r&eacute;pondre aux besoins de plusieurs normes, telles que GSM, WCDMA et LTE multi-op&eacute;rateurs, sans compromettre les performances dynamiques. Les concepteurs peuvent ainsi utiliser une plateforme mat&eacute;rielle courante et r&eacute;duire les temps de d&eacute;veloppement pour acc&eacute;l&eacute;rer&nbsp; le lancement des produits.<br \/>\nJagdish Rebello, Directeur Senior et Analyste Principal chez iSuppli, d&eacute;clare: &quot;Les OEM et les fournisseurs de semi-conducteurs doivent s&rsquo;efforcer de d&eacute;velopper des solutions d&rsquo;infrastructure efficaces, non seulement capables de r&eacute;pondre aux besoins actuels des op&eacute;rateurs, mais aussi d&rsquo;assurer d&rsquo;accompagner leur migration des technologies 3G\/3.5G vers la 4G. De nombreux OEM commencent &agrave; favoriser les solutions xG vers 4G. Mais pour &ecirc;tre vraiment int&eacute;ressantes, ces solutions doivent &ecirc;tre assez souples pour suivre l&rsquo;&eacute;volution&nbsp; des besoins des op&eacute;rateurs par rapport aux bandes de fr&eacute;quence et aux technologies d&rsquo;interface sans-fil.&quot;<br \/>\nLes smartphones et les tablettes exigent davantage de d&eacute;bit des stations de base sans fil. Un &eacute;metteur construit autour de ce radio-convertisseur fournit une largeur de bande bien sup&eacute;rieure &agrave; une architecture traditionnelle. Le multiplexeur de donn&eacute;es s&eacute;lectionnable 4:1 ou 2:1 permet aux concepteurs de mat&eacute;riel de r&eacute;duire le d&eacute;bit des mots en entr&eacute;e et, ainsi, d&rsquo;utiliser des FPGA moins co&ucirc;teux. Cette technologie convient aussi parfaitement aux liaisons radio hyperfr&eacute;quence utilis&eacute;s dans les retours radio mobiles, dans les circuits CMTS\/edge-QAM servant de terminaison&nbsp; c&acirc;ble et pour d&rsquo;autres syst&egrave;mes de communication large-bande.<br \/>\nDisponible en bo&icirc;tier CSBGA 256 billes de 17 x 17 mm, ce radio-convertisseur est garanti dans la gamme de temp&eacute;rature de -40 &deg;C &agrave; +85 &deg;C.<\/p>\n<p><a title=\"www.maxim-ic.com\" target=\"_blank\" href=\"http:\/\/www.maxim-ic.com\" rel=\"noopener\">www.maxim-ic.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Maxim Integrated Products annonce le MAX5879, un radio-convertisseur num\u00e9rique-analogique multi-Nyquist qui permet d&rsquo;obtenir un \u00e9metteur radio \u00e0 base logicielle SDR (Sofware Defined Radio) pouvant servir de plateforme mat\u00e9rielle commune pour les stations de base multi-porteuse, multibandes, et multistandards.<\/p>\n","protected":false},"author":22,"featured_media":224530,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-224529","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Radio-CNA pour transmetteur num\u00e9rique compatible toutes normes...<\/title>\n<meta name=\"description\" content=\"Maxim Integrated Products annonce le MAX5879, un radio-convertisseur num\u00e9rique-analogique multi-Nyquist qui permet d&#039;obtenir un \u00e9metteur radio \u00e0 base...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/224529\/\" 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