{"id":234428,"date":"2015-10-07T22:00:00","date_gmt":"2015-10-07T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/transpondeur-rf-multicanaux-programmable\/"},"modified":"2015-10-07T22:00:00","modified_gmt":"2015-10-07T22:00:00","slug":"transpondeur-rf-multicanaux-programmable","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/transpondeur-rf-multicanaux-programmable\/","title":{"rendered":"Transpondeur RF multicanaux programmable"},"content":{"rendered":"<p>Ce circuit convient aux applications sans-fil sub-GHz, comme l&rsquo;automatisation domotique, la supervision de pression de pneu TMPS, la lecture de compteur automatique &agrave; distance AMR, les syst&egrave;mes d&rsquo;alarme, les syst&egrave;mes d&rsquo;acc&egrave;s passif sans cl&eacute; PKE, le diagnostic m&eacute;dical ou la t&eacute;l&eacute;m&eacute;trie. Sa puissance de sortie est variable entre -20 dBm et 13 dBm, tandis que la sensibilit&eacute; du r&eacute;cepteur peut atteindre -120 dBm dans une bande passante de 15 kHz.<br \/>\nAvec un d&eacute;bit de donn&eacute;es maximum de 250 kbits\/s, ce transpondeur peut aussi g&eacute;rer des d&eacute;bits de donn&eacute;es relativement &eacute;lev&eacute;s. Gr&acirc;ce &agrave; sa tr&egrave;s bonne programmabilit&eacute;, les ing&eacute;nieurs qui l&rsquo;utilise disposent de toutes les possibilit&eacute;s n&eacute;cessaires pour configurer et impl&eacute;menter un frontal RF. Pour r&eacute;pondre &agrave; des crit&egrave;res sp&eacute;cifiques de l&rsquo;application, de nombreux param&egrave;tres RF diff&eacute;rents peuvent &ecirc;tre ajust&eacute;s tels que nombre de canaux, r&eacute;solution en fr&eacute;quence, puissance de sortie, d&eacute;viation de fr&eacute;quence, etc. Diff&eacute;rents modes de modulation sont support&eacute;s, notamment celui de marche-arr&ecirc;t OOK, la modulation &agrave; glissement de fr&eacute;quence FSK, ou celle &agrave; glissement de minimum gaussien GMSK.<br \/>\nDeux d&eacute;tecteurs de puissance RF permettent d&rsquo;am&eacute;liorer les performances au niveau puissance rayonn&eacute;e pendant la transmission. Une interface de moissonnage d&rsquo;&eacute;nergie assure l&rsquo;alimentation en l&rsquo;absence de batterie gr&acirc;ce &agrave; une cellule photovolta&iuml;que associ&eacute;e &agrave; un super-condensateur. Ceci est particuli&egrave;rement int&eacute;ressant dans les sites distants o&ugrave; il n&rsquo;existe pas de ligne &eacute;lectrique.<br \/>\nCe transpondeur est encapsul&eacute; en bo&icirc;tier QFN 32 broches de 5 x 5 mm. Sa plage de temp&eacute;ratures op&eacute;rationnelles s&rsquo;&eacute;tend de -40 &deg;C &agrave; +105 &deg;C.Il est accompagn&eacute; de cartes et d&rsquo;outils logiciels facilitant son &eacute;valuation.<\/p>\n<\/p>\n<p><a href=\"http:\/\/www.melexis.com\/MLX73290-M\" target=\"_blank\" rel=\"noopener\">www.melexis.com\/MLX73290-M<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Destin\u00e9 aux bandes ISM sub-GHz de 300 MHz \u00e0 960 MHz, le transpondeur RF multicanaux MLX73290-M  de Melexis propose deux canaux RF, chacun avec un \u00e9metteur RF \u00e0 puissance programmable et un r\u00e9cepteur RF haute-sensibilit\u00e9. Il est 100% programmable par l&rsquo;interm\u00e9diaire d&rsquo;une interface s\u00e9rie SPI et dispose une interface de moissonnage d&rsquo;\u00e9nergie.<\/p>\n","protected":false},"author":22,"featured_media":234429,"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-234428","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Transpondeur RF multicanaux programmable ...<\/title>\n<meta name=\"description\" content=\"Destin\u00e9 aux bandes ISM sub-GHz de 300 MHz \u00e0 960 MHz, le transpondeur RF multicanaux MLX73290-M  de Melexis propose deux canaux RF, chacun avec un \u00e9metteur...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/234428\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Transpondeur RF multicanaux programmable\" \/>\n<meta property=\"og:description\" content=\"Destin\u00e9 aux bandes ISM sub-GHz de 300 MHz \u00e0 960 MHz, le transpondeur RF multicanaux MLX73290-M de Melexis propose deux canaux RF, chacun avec un \u00e9metteur RF \u00e0 puissance programmable et un r\u00e9cepteur RF haute-sensibilit\u00e9. 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