{"id":6700,"date":"2023-11-03T18:39:41","date_gmt":"2023-11-03T18:39:41","guid":{"rendered":"https:\/\/www.calian.com\/advanced-technologies\/technologie-de-filtrage-etendu-xf\/"},"modified":"2024-06-24T18:31:33","modified_gmt":"2024-06-24T18:31:33","slug":"extended-filtering-xf-technology","status":"publish","type":"page","link":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/","title":{"rendered":"Technologie de filtrage \u00e9tendu (XF)"},"content":{"rendered":"\n<div class=\"tbk-hydrate-component\" data-cid=\"a6aabfc3-e95b-4dcd-b1bd-3daad25e7046\" data-component=\"Hero\"><section class=\"calian-hero d-flex h-100 position-relative overflow-hidden nav-indent wp-block-calian-com-components-calian-hero media-position-split has-split-image pb-5 pb-lg-0 overlay-themed\"><div class=\"container\"><div class=\"row\"><div class=\"calian-hero__content d-flex col-lg flex-column pb-3 justify-content-center has-breadcrumbs text-left\"><div class=\"calian-hero__copy-wrapper\"><h1 class=\"calian-hero__heading text-white\">eXtended Filtering (XF) technology<\/h1><div class=\"calian-hero__text text-white mt-2 mb-4\">Discover Calian&#8217;s eXtended Filtering: Your solution to emerging GNSS signal interference, ensuring reliable and clean navigation signals.<\/div><a href=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Tallysman-XF-Filtering.pdf\" class=\"btn btn-light mb-4 mt-3\" target=\"_blank\" rel=\"noreferrer noopener\">Download XF brochure<\/a><\/div><div class=\"calian-hero__breadcrumbs mt-auto mb-0 pt-lg-4 pt-3 pb-lg-0 pb-md-3 pb-1\"><nav aria-label=\"breadcrumb\" class=\"breadcrumb-container\"><ol class=\"breadcrumb\"><li class=\"breadcrumb-item\"><a href=\"https:\/\/www.calian.com\" class=\"breadcrumb-item-link\">Home<\/a><\/li><li class=\"breadcrumb-item\"><a href=\"https:\/\/www.calian.com\/#\" class=\"breadcrumb-item-link\">Business Unit<\/a><\/li><li class=\"breadcrumb-item\" aria-current=\"page\">Page Title<\/li><\/ol><\/nav><\/div><\/div><div class=\"calian-hero__media col-md w-100 h-100 pt-lg-5 mt-lg-3 media-style-split\"><div class=\"media-wrapper ps-lg-5 pb-3 pb-lg-0 ml-auto mr-0 w-100 h-100\"><div class=\"advanced-image w-100 h-100\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg\" alt=\"A telecommunications tower lit with red lights stands in the foreground at dusk, with a sprawling cityscape and sunset in the background.\" width=\"1024\" height=\"574\" class=\"calian-hero__image\"\/><\/div><\/div><\/div><\/div><\/div><div class=\"calian-hero__overlay overlay-themed position-absolute w-100 h-100 top-0 start-0 has-image\"><\/div><span><\/span><\/section><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"a9130489-27d6-4449-92d6-58f15909c48e\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--large wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"406f1bc4-815b-4702-9427-7209c8aea4e6\" data-component=\"AlternatingTextAndImages\"><div class=\"calian-alternating-text-and-images overflow-hidden wp-block-calian-com-components-calian-alternating-text-and-images\"><div class=\"calian-alternating-text-and-images__container container-fluid\"><div class=\"\"><div class=\"row gx-md-6 justify-content-lg-start justify-content-lg-start mb-3 mb-md-9\"><div class=\"col-12 col-md mb-3\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Tallysman-GPS-World-2021-Web-XF_Figure-1-GNSS-Constellations-1024x995.jpg\" alt=\"\" width=\"1024\" height=\"995\" class=\"rounded-5 img-fluid w-100 h-250px h-md-373px object-fit-cover\"\/><\/div><div class=\"col-12 col-md\"><h3>Les interf\u00e9rences RF menacent la clart\u00e9 du signal GNSS<\/h3><div class=\"calian-alternating-text-and-images__text mb-3\">Dans le monde entier, la congestion des radiofr\u00e9quences (RF) \u00e0 des fr\u00e9quences sup\u00e9rieures et inf\u00e9rieures aux bandes de fr\u00e9quences prot\u00e9g\u00e9es du syst\u00e8me mondial de navigation par satellite (GNSS) menace la r\u00e9ception claire des signaux GNSS, et le probl\u00e8me ne cesse de s&#8217;aggraver! La figure 1 pr\u00e9sente les constellations et les bandes de fr\u00e9quences du GNSS.\n<p>Les principales sources d&#8217;interf\u00e9rence sont les r\u00e9seaux mobiles LTE et 5G, ainsi que les fr\u00e9quences de liaison montante d&#8217;Iridium, de Globalstar et, dans une certaine mesure, d&#8217;Inmarsat (1626,5 MHz \u00e0 1660,5 MHz). <\/p><\/div><div class=\"calian-alternating-text-and-images__ctas mb-3 d-flex flex-wrap gap-3\"><\/div><\/div><\/div><div class=\"row gx-md-6 flex-row-reverse justify-content-lg-between justify-content-lg-start\"><div class=\"col-12 col-md mb-3\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Tallysman-GPS-World-2021-Web-XF_Figure-2-GNSS-Interferences-1024x896.jpg\" alt=\"\" width=\"1024\" height=\"896\" class=\"rounded-5 img-fluid w-100 h-250px h-md-373px object-fit-cover\"\/><\/div><div class=\"col-12 col-md\"><div class=\"calian-alternating-text-and-images__text mb-3\">Les nouveaux signaux LTE en Europe ( [Band 32 (1452 MHz to 1496 MHz)] ) et au Japon ( [Bands 11 and 21 (1476 to 1511 MHz)] ) sont \u00e9galement des interf\u00e9rences potentiellement importantes. La figure 2 pr\u00e9sente des exemples de signaux d&#8217;interf\u00e9rence hors bande \u00e0 proximit\u00e9 des bandes GNSS.\n<p>L&#8217;amplitude des interf\u00e9rences potentielles re\u00e7ues est fonction de la fr\u00e9quence et de la distance entre un \u00e9metteur potentiel et l&#8217;antenne GNSS. Par exemple, en Am\u00e9rique du Nord, un r\u00e9seau 5G est pr\u00e9vu dans un segment inf\u00e9rieur de la liaison descendante Inmarsat (1525 MHz \u00e0 1536 MHz), et il est tout \u00e0 fait concevable qu&#8217;une antenne GNSS soit physiquement proche d&#8217;un t\u00e9l\u00e9phone intelligent ou d&#8217;un casque d&#8217;\u00e9coute en fonctionnement. Ce nouveau r\u00e9seau 5G menace particuli\u00e8rement la diffusion de services de correction en bande L (1539 MHz \u00e0 1559 MHz).<\/p><\/div><div class=\"calian-alternating-text-and-images__ctas mb-3 d-flex flex-wrap gap-3\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"1cfdb6bd-f790-4e97-b62f-8ec77333a851\" data-component=\"Spacer\"><div class=\"calian-spacer wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"3ac8c2ad-7f33-4f35-9ac2-ce95af1f7ffd\" data-component=\"CalianContainer\"><div class=\"calian-container wp-block-calian-com-components-calian-container\"><div>\n<h2 class=\"wp-block-heading\">Sources d&#8217;interf\u00e9rence RF du GNSS<\/h2>\n\n\n\n<p>Le plus souvent, les interf\u00e9rences dans la bande r\u00e9sultent d&#8217;une distorsion des signaux de grande amplitude due \u00e0 la non-lin\u00e9arit\u00e9 de l&#8217;amplificateur \u00e0 faible bruit (LNA) de l&#8217;antenne ou, occasionnellement, d&#8217;un dispositif de brouillage utilis\u00e9 pour d\u00e9sactiver le suivi. Dans les deux cas, une fois qu&#8217;il est pr\u00e9sent, aucun filtre, qu&#8217;il soit num\u00e9rique ou analogique, ne peut l&#8217;\u00e9liminer; la pr\u00e9vention est le seul rem\u00e8de.<\/p>\n\n\n\n<p>Les signaux hors bande puissants peuvent g\u00e9n\u00e9rer des interf\u00e9rences dans la bande en saturant le LNA de l&#8217;antenne ou par multiplication crois\u00e9e avec d&#8217;autres signaux puissants. Par exemple, un signal fort unique \u00e0 800 MHz peut provoquer un \u00ab peigne \u00bb d&#8217;harmoniques, chacune d\u00e9cal\u00e9e par la fr\u00e9quence porteuse du signal, y compris un signal harmonique \u00e0 1600 MHz, qui tombe pr\u00e8s du centre de la bande GLONASS-G1.<\/p>\n<\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"558963ea-1daa-499e-8552-abcae20ec131\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--small wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"5fc04413-1285-4527-b446-42ae57a0ca94\" data-component=\"AlternatingTextAndImages\"><div class=\"calian-alternating-text-and-images overflow-hidden wp-block-calian-com-components-calian-alternating-text-and-images\"><div class=\"calian-alternating-text-and-images__container container-fluid\"><div class=\"\"><div class=\"row gx-md-6 justify-content-lg-start justify-content-lg-start\"><div class=\"col-12 col-md mb-3\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Tallysman-GPS-World-2021-Web-XF_Figure-3-Unintensional-Interference-Novatel.jpg\" alt=\"\" width=\"906\" height=\"731\" class=\"rounded-5 img-fluid w-100 h-250px h-md-373px object-fit-cover\"\/><\/div><div class=\"col-12 col-md\"><div class=\"calian-alternating-text-and-images__text mb-3\">La multiplication crois\u00e9e peut g\u00e9n\u00e9rer des produits d&#8217;intermodulation dans la bande, g\u00e9n\u00e9ralement caract\u00e9ris\u00e9s par l&#8217;\u00e9quation suivante n.f1 \u00b1 m.f2, o\u00f9 n et m sont des nombres entiers, et f1 et f2 sont les fr\u00e9quences porteuses du signal. G\u00e9n\u00e9ralement, les produits d&#8217;intermodulation d&#8217;ordre inf\u00e9rieur sont les plus forts de la s\u00e9rie. La figure 3 montre quelques-uns des signaux harmoniques et des combinaisons d&#8217;intermodulation possibles.\n<p>Les antennes Calian XF continueront \u00e0 fournir une r\u00e9ception GNSS pure dans les bandes GNSS basses et hautes (1165 MHz \u00e0 1300 MHz ; 1540 MHz \u00e0 1610 MHz) en pr\u00e9sence de signaux d&#8217;interf\u00e9rence qui sont jusqu&#8217;\u00e0 90 dB plus forts que les signaux GNSS d\u00e9sir\u00e9s de -120 dBm, d\u00e9cal\u00e9s seulement de quelques dizaines de MHz du bord de la bande.<\/p><\/div><div class=\"calian-alternating-text-and-images__ctas mb-3 d-flex flex-wrap gap-3\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"82a795e1-1d07-45cb-a20b-a2d68fc51ff1\" data-component=\"TabbedContent\"><div class=\"calian-tabbed-content position-relative pb-7 pb-lg-12 wp-block-calian-com-components-calian-tabbed-content\" style=\"background-color:\"><div class=\"container-fluid mw-1260px z-1 position-relative\"><div class=\"row mb-md-4 ms-0 ms-xl-3\"><div class=\"col-12 col-lg-7\"><div class=\"d-flex flex-column gap-3\"><h2 class=\"mb-0\">Mitigating radio frequency interference<\/h2><\/div><\/div><\/div><div class=\"mt-5 mt-md-9\"><\/div><div class=\"row position-relative\"><div class=\"calian-tabbed-content__tabs d-flex z-2 calian-tabbed-content__tabs--vertical flex-column\"><ul class=\"nav nav-tabs\" role=\"tablist\"><li class=\"nav-item\" role=\"presentation\"><button class=\"nav-link active\" id=\"preventing-in-band-interference-tab\" data-bs-toggle=\"tab\" data-bs-target=\"#preventing-in-band-interference\" type=\"button\" role=\"tab\" aria-controls=\"preventing-in-band-interference\" aria-selected=\"true\">Preventing in-band interference<\/button><\/li><li class=\"nav-item\" role=\"presentation\"><button class=\"nav-link\" id=\"ideal-rf-filter-design-tab\" data-bs-toggle=\"tab\" data-bs-target=\"#ideal-rf-filter-design\" type=\"button\" role=\"tab\" aria-controls=\"ideal-rf-filter-design\" aria-selected=\"false\">Ideal RF filter design<\/button><\/li><li class=\"nav-item\" role=\"presentation\"><button class=\"nav-link\" id=\"antenna-lna-evolution-tab\" data-bs-toggle=\"tab\" data-bs-target=\"#antenna-lna-evolution\" type=\"button\" role=\"tab\" aria-controls=\"antenna-lna-evolution\" aria-selected=\"false\">Antenna LNA evolution<\/button><\/li><\/ul><div class=\"tab-content\"><div class=\"tab-pane\" data-title=\"Preventing in-band interference\" id=\"preventing-in-band-interference\" role=\"tabpanel\" aria-labelledby=\"preventing-in-band-interference-tab\"><div class=\"calian-tabbed-content__pane d-flex flex-row gap-lg-7 mt-5 mt-md-7 mt-0 mb--md-12\"><div class=\"calian-tabbed-content__content order-2 mb-6 mb-lg-0 calian-tabbed-content__content--one-column-list\"><div><h3>In-band interference solutions<\/h3>\n<p>Preventing in-band interference in antennas involves addressing the non-linearity caused by high out-of-band signals. Achieving higher linearity in Low Noise Amplifiers (LNAs) often leads to increased bias currents and supply voltages. However, a more effective approach involves using RF filters to attenuate these high amplitude signals, ensuring LNAs operate as linearly as possible.<\/p><\/div><\/div><\/div><\/div><div class=\"tab-pane\" data-title=\"Ideal RF filter design\" id=\"ideal-rf-filter-design\" role=\"tabpanel\" aria-labelledby=\"ideal-rf-filter-design-tab\"><div class=\"calian-tabbed-content__pane d-flex flex-row gap-lg-7 mt-5 mt-md-7 mt-0 mb--md-12\"><div class=\"calian-tabbed-content__content order-2 mb-6 mb-lg-0 calian-tabbed-content__content--one-column-list\"><div><h3>RF filter design challenges<\/h3>\n<p>Designing ideal bandpass RF filters is a complex task. These filters aim to be completely linear, with 0 dB insertion loss, sharply defined band edges, and steep skirts for deep rejection near the passband edges. However, in practical applications, filters often have insertion losses ranging from 0.8 dB to 3.0 dB, with less sharp corners at band edges and a finite roll-off, presenting unique challenges in filter design.<\/p><\/div><\/div><\/div><\/div><div class=\"tab-pane\" data-title=\"Antenna LNA evolution\" id=\"antenna-lna-evolution\" role=\"tabpanel\" aria-labelledby=\"antenna-lna-evolution-tab\"><div class=\"calian-tabbed-content__pane d-flex flex-row gap-lg-7 mt-5 mt-md-7 mt-0 mb--md-12\"><div class=\"calian-tabbed-content__content order-2 mb-6 mb-lg-0 calian-tabbed-content__content--one-column-list\"><div><h3>LNA evolution for interference<\/h3>\n<p>The design of antenna Low Noise Amplifiers (LNAs) has historically included one or more passband RF filters, typically after the first or second amplifier stages. This configuration was optimal for maximizing the signal-to-noise ratio without contributing to the noise figure. However, with the emergence of high-amplitude out-of-band signals, this design is now susceptible to front-end saturation, demanding new strategies to maintain antenna performance.<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"558963ea-1daa-499e-8552-abcae20ec131\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--small wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"0e00c011-99ce-43f2-ac4a-801e76dd17ab\" data-component=\"BlockQuote\"><div class=\"calian-block-quote wp-block-calian-com-components-calian-block-quote\"><blockquote class=\"calian-block-quote__quote position-relative mx-auto px-4 ps-8 ps-md-4\">Calian XF products have high-linearity front-end amplifiers with additional pre-filters for each frequency band, right at the antenna element feed, integrated with the diplexer for dual\/triple-band antennas and with additional in-line filters.<\/blockquote><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"558963ea-1daa-499e-8552-abcae20ec131\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--small wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"bc4ec121-86b2-4464-ab3c-09890475d659\" data-component=\"CalianContainer\"><div class=\"calian-container wp-block-calian-com-components-calian-container\"><div>\n<p>Cela pr\u00e9sente l&#8217;avantage de prot\u00e9ger le premier \u00e9tage d&#8217;amplification et les suivants, mais au prix d&#8217;un facteur de bruit un peu plus \u00e9lev\u00e9 en raison de la perte d&#8217;insertion du pr\u00e9filtre. <em>Il n&#8217;y a pas de repas gratuit!<\/em> Les antennes \u00e0 bande unique comportent \u00e9galement un pr\u00e9filtre, mais le diplexeur n&#8217;est pas n\u00e9cessaire.<\/p>\n<\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"558963ea-1daa-499e-8552-abcae20ec131\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--small wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"fcf40391-520e-40bd-9b20-f2310357bbbc\" data-component=\"AlternatingTextAndImages\"><div class=\"calian-alternating-text-and-images overflow-hidden wp-block-calian-com-components-calian-alternating-text-and-images\"><div class=\"calian-alternating-text-and-images__container container-fluid\"><div class=\"\"><div class=\"row gx-md-6 justify-content-lg-start justify-content-lg-start mb-3 mb-md-9\"><div class=\"col-12 col-md mb-3\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Tallysman-GPS-World-2021-Web-XF_Figure-4a-TC-Saw-Filter-3.jpg\" alt=\"\" width=\"688\" height=\"599\" class=\"rounded-5 img-fluid w-100 h-250px h-md-373px object-fit-cover\"\/><\/div><div class=\"col-12 col-md\"><h3>Compromis dans l&#8217;amplification du GNSS: pr\u00e9filtres et consid\u00e9rations sur l&#8217;antenne<\/h3><div class=\"calian-alternating-text-and-images__text mb-3\">Les filtres \u00e0 ondes acoustiques de surface (SAW) et les filtres di\u00e9lectriques conviennent \u00e0 cette fin, avec des facteurs de forme pratiques. Les SAW ont un faible encombrement, sont peu co\u00fbteux, mais ont des coefficients de temp\u00e9rature d&#8217;environ -40 ppm\/\u00b0C (des versions partiellement compens\u00e9es en temp\u00e9rature sont \u00e9galement disponibles), et des pertes d&#8217;insertion de 1,5 dB \u00e0 3,0 dB, en fonction de la largeur de bande et de l&#8217;inclinaison des jupes. D&#8217;autre part, les filtres di\u00e9lectriques ont des empreintes relativement grandes, des pertes d&#8217;insertion de l&#8217;ordre de 1 dB, voire mieux, et des coefficients de temp\u00e9rature presque nuls.<\/div><div class=\"calian-alternating-text-and-images__ctas mb-3 d-flex flex-wrap gap-3\"><\/div><\/div><\/div><div class=\"row gx-md-6 flex-row-reverse justify-content-lg-between justify-content-lg-start\"><div class=\"col-12 col-md mb-3\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Ceramic-Filter.jpg\" alt=\"\" width=\"385\" height=\"268\" class=\"rounded-5 img-fluid w-100 h-250px h-md-373px object-fit-cover\"\/><\/div><div class=\"col-12 col-md\"><div class=\"calian-alternating-text-and-images__text mb-3\">Pour l&#8217;antenne GNSS, le GDV est le plus petit (2 \u00e0 3 ns) au centre des bandes, et augmente vers les bords de la bande. Par exemple, une antenne pleine bande profond\u00e9ment filtr\u00e9e peut avoir un GDV de 12 \u00e0 15 ns sur les bords de la bande passante par rapport au centre de la bande. Le GDV peut \u00eatre sensible \u00e0 la temp\u00e9rature, car les filtres SAW ont des coefficients de temp\u00e9rature finis.\n<p>La n\u00e9cessit\u00e9 d&#8217;utiliser diff\u00e9rents filtres pour couvrir les diff\u00e9rentes bandes GNSS entra\u00eene des retards de groupe in\u00e9gaux entre les bandes, introduisant un effet connu dans la communaut\u00e9 des antennes de r\u00e9f\u00e9rence sous le nom de biais de code diff\u00e9rentiel (DCB).<\/p><\/div><div class=\"calian-alternating-text-and-images__ctas mb-3 d-flex flex-wrap gap-3\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"44760b10-0653-4d51-a604-f31b5a93531e\" data-component=\"CalianContainer\"><div class=\"calian-container wp-block-calian-com-components-calian-container\"><div>\n<p>La n\u00e9cessit\u00e9 d&#8217;utiliser diff\u00e9rents filtres pour couvrir les diff\u00e9rentes bandes GNSS entra\u00eene des retards de groupe in\u00e9gaux entre les bandes, introduisant un effet connu dans la communaut\u00e9 des antennes de r\u00e9f\u00e9rence sous le nom de biais de code diff\u00e9rentiel (DCB).<\/p>\n\n\n\n<p>Calian utilise des filtres SAW dans les lignes d&#8217;antennes Accutenna\u00ae et Helical et une combinaison de filtres RF di\u00e9lectriques et SAW dans nos antennes haut de gamme (VeroStar\u2122, VeraPhase\u00ae et VeraChoke\u00ae). Des filtres di\u00e9lectriques multiples sont \u00e9galement utilis\u00e9s pour les membres \u00e0 triple bande \u00e0 tr\u00e8s haut rejet de la gamme Accutenna (TW3972XF, TW3967XF, etc.).<\/p>\n<\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"558963ea-1daa-499e-8552-abcae20ec131\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--small wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"affec9c6-15da-41b5-b880-dd8cac4fed96\" data-component=\"AlternatingTextAndImages\"><div class=\"calian-alternating-text-and-images overflow-hidden wp-block-calian-com-components-calian-alternating-text-and-images\"><div class=\"calian-alternating-text-and-images__container container-fluid\"><div class=\"\"><div class=\"row gx-md-6 justify-content-lg-start justify-content-lg-start\"><div class=\"col-12 col-md mb-3\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Tallysman-GPS-World-2021-Web-XF_TW3000-1-768x428-1.jpg\" alt=\"\" width=\"850\" height=\"758\" class=\"rounded-5 img-fluid w-100 h-250px h-md-373px object-fit-cover\"\/><\/div><div class=\"col-12 col-md\"><h3>Ligne de filtration \u00e9tendue (XF) de Calian<\/h3><div class=\"calian-alternating-text-and-images__text mb-3\">Il a \u00e9t\u00e9 d\u00e9montr\u00e9 que le filtrage XF personnalis\u00e9 de Calian att\u00e9nue les interf\u00e9rences provenant de sources LTE existantes et nouvelles en Europe, au Japon et en Am\u00e9rique du Nord (y compris Ligado).\n<p>Le filtrage XF permet aux antennes de produire une r\u00e9ception GNSS propre et pure. La technologie du filtre XF profond est actuellement disponible dans la famille TW3000 et le sera bient\u00f4t dans toutes les gammes de produits Calian.<\/p><\/div><div class=\"calian-alternating-text-and-images__ctas mb-3 d-flex flex-wrap gap-3\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"a9130489-27d6-4449-92d6-58f15909c48e\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--large wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"87aae199-cab4-4015-94d4-eddf37a67a42\" data-component=\"CTABar\"><div class=\"calian-cta-bar theme-dark wp-block-calian-com-components-calian-cta-bar\"><div class=\"calian-cta-bar__container container-fluid\"><div class=\"calian-cta-bar__horizontal container-fluid\"><div class=\"row\"><div class=\"calian-cta-bar__horizontal--left col-12 col-lg-3 col-xl-2\"><div class=\"calian-cta-bar__horizontal--logo\"><img decoding=\"async\" src=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2026\/01\/2026-Logo-Calian-EN-RGB-DIGITAL-knock-out-1.svg\" alt=\"\" class=\"w-100 h-auto\"\/><\/div><\/div><div class=\"calian-cta-bar__horizontal--center col-12 col-lg-6 col-xl-7\"><div class=\"calian-cta-bar__horizontal--text\"><p>For all your precision applications, discover Calian&#8217;s future-proof line of eXtended Filter GNSS antennas.<\/p><\/div><\/div><div class=\"calian-cta-bar__horizontal--right col-12 col-lg-3 col-xl-3\"><div class=\"calian-cta-bar__horizontal--button\"><a href=\"https:\/\/www.calian.com\/advanced-technologies\/fr\/antennes-gnss\/\" class=\"btn\">Learn more<\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<div class=\"tbk-hydrate-component\" data-cid=\"a9130489-27d6-4449-92d6-58f15909c48e\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--large wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n<!-- wp:block null -->\n<div class=\"wp-block-group\">\n<div class=\"tbk-hydrate-component\" data-cid=\"764d340b-f4f6-4d37-98c5-58709081f697\" data-component=\"Spacer\"><div class=\"calian-spacer calian-spacer--medium wp-block-calian-com-components-calian-spacer\"><\/div><\/div>\n<\/div>\n<!-- \/wp:block -->","protected":false},"excerpt":{"rendered":"<p>eXtended Filtering (XF) technology Discover Calian&#8217;s eXtended Filtering: Your solution to emerging GNSS signal interference, ensuring reliable and clean navigation signals. <a href=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2023\/11\/Tallysman-XF-Filtering.pdf\" class=\"btn btn-light mb-4 mt-3\" target=\"_blank\" rel=\"noreferrer noopener\"> Download XF brochure <\/a> <\/p>\n<li class=\"breadcrumb-item\"> <a href=\"https:\/\/www.calian.com\" class=\"breadcrumb-item-link\"> Home <\/a> <\/li>\n<li class=\"breadcrumb-item\"> <a href=\"https:\/\/www.calian.com\/#\" class=\"breadcrumb-item-link\"> Business Unit <\/a> <\/li>\n<li class=\"breadcrumb-item\" aria-current=\"page\"> Page Title <\/li>\n<p> Les interf\u00e9rences RF &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7984,"menu_order":120,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"solution":[],"industry":[],"type_classification":[],"class_list":["post-6700","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Technologie de filtrage \u00e9tendu (XF) - Space | Calian<\/title>\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.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Technologie de filtrage \u00e9tendu (XF) - Space | Calian\" \/>\n<meta property=\"og:description\" content=\"eXtended Filtering (XF) technology Discover Calian&#8217;s eXtended Filtering: Your solution to emerging GNSS signal interference, ensuring reliable and clean navigation signals. Download XF brochure  Home   Business Unit  Page Title Les interf\u00e9rences RF &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/\" \/>\n<meta property=\"og:site_name\" content=\"Calian Space (GNSS)\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-24T18:31:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"15 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/\",\"url\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/\",\"name\":\"Technologie de filtrage \u00e9tendu (XF) - Space | Calian\",\"isPartOf\":{\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg\",\"datePublished\":\"2023-11-03T18:39:41+00:00\",\"dateModified\":\"2024-06-24T18:31:33+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#primaryimage\",\"url\":\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg\",\"contentUrl\":\"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Technologies\",\"item\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Technologie de filtrage \u00e9tendu (XF)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/#website\",\"url\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/\",\"name\":\"Calian Space (GNSS)\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.calian.com\/advanced-technologies\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Technologie de filtrage \u00e9tendu (XF) - Space | Calian","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/","og_locale":"fr_FR","og_type":"article","og_title":"Technologie de filtrage \u00e9tendu (XF) - Space | Calian","og_description":"eXtended Filtering (XF) technology Discover Calian&#8217;s eXtended Filtering: Your solution to emerging GNSS signal interference, ensuring reliable and clean navigation signals. Download XF brochure  Home   Business Unit  Page Title Les interf\u00e9rences RF &hellip;","og_url":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/","og_site_name":"Calian Space (GNSS)","article_modified_time":"2024-06-24T18:31:33+00:00","og_image":[{"url":"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"15 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/","url":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/","name":"Technologie de filtrage \u00e9tendu (XF) - Space | Calian","isPartOf":{"@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#primaryimage"},"image":{"@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#primaryimage"},"thumbnailUrl":"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg","datePublished":"2023-11-03T18:39:41+00:00","dateModified":"2024-06-24T18:31:33+00:00","breadcrumb":{"@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#primaryimage","url":"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg","contentUrl":"https:\/\/sites.calian.com\/app\/uploads\/sites\/8\/2024\/04\/Calian-Cell-Phone-Tower-3-1024x574.jpeg"},{"@type":"BreadcrumbList","@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/extended-filtering-xf-technology\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/"},{"@type":"ListItem","position":2,"name":"Technologies","item":"https:\/\/www.calian.com\/advanced-technologies\/fr\/gnss\/technologies\/"},{"@type":"ListItem","position":3,"name":"Technologie de filtrage \u00e9tendu (XF)"}]},{"@type":"WebSite","@id":"https:\/\/www.calian.com\/advanced-technologies\/fr\/#website","url":"https:\/\/www.calian.com\/advanced-technologies\/fr\/","name":"Calian Space (GNSS)","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.calian.com\/advanced-technologies\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"}]}},"_links":{"self":[{"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/pages\/6700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/comments?post=6700"}],"version-history":[{"count":12,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/pages\/6700\/revisions"}],"predecessor-version":[{"id":14038,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/pages\/6700\/revisions\/14038"}],"up":[{"embeddable":true,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/pages\/7984"}],"wp:attachment":[{"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/media?parent=6700"}],"wp:term":[{"taxonomy":"solution","embeddable":true,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/solution?post=6700"},{"taxonomy":"industry","embeddable":true,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/industry?post=6700"},{"taxonomy":"type_classification","embeddable":true,"href":"https:\/\/gnss.calian.com\/fr\/wp-json\/wp\/v2\/type_classification?post=6700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}