{"id":63915,"date":"2023-11-22T11:11:34","date_gmt":"2023-11-22T11:11:34","guid":{"rendered":"https:\/\/knowhow.distrelec.com\/okategoriserad\/overvaganden-for-jordplan-vid-optimering-av-antennens-prestanda-i-kompakta-iot-enheter\/"},"modified":"2023-12-08T09:57:18","modified_gmt":"2023-12-08T09:57:18","slug":"overvaganden-for-jordplan-vid-optimering-av-antennens-prestanda-i-kompakta-iot-enheter","status":"publish","type":"post","link":"https:\/\/knowhow.distrelec.com\/sv\/internet-of-things-iot\/overvaganden-for-jordplan-vid-optimering-av-antennens-prestanda-i-kompakta-iot-enheter\/","title":{"rendered":"\u00d6verv\u00e4ganden f\u00f6r jordplan vid optimering av antennens prestanda i kompakta IoT-enheter"},"content":{"rendered":"\n<p>I IoT-enheternas v\u00e4rld d\u00e4r <a href=\"https:\/\/knowhow.distrelec.com\/sv\/rnd-sv\/miniatyrisering-inom-elektronik-rnd\/\" target=\"_blank\" rel=\"noreferrer noopener\">komponenterna blir mindre och mindre<\/a>, \u00e4r mobilantenner viktiga komponenter som underl\u00e4ttar anslutning och kommunikation. Det finns dock utmaningar med att integrera effektiva mobilantenner i sm\u00e5 enheter. En av dessa utmaningar som beh\u00f6ver stort fokus \u00e4r styrning av jordplanet \u2014 en avg\u00f6rande komponent f\u00f6r antennens prestanda. I den h\u00e4r artikeln unders\u00f6ker vi den intrikata och fascinerande v\u00e4rlden f\u00f6r mobilantenner till sm\u00e5 Internet of Things-enheter, med betoning p\u00e5 betydelsen av jordplanet.<\/p>\n\n\n\n<h3 id=\"betydelsen-av-mobilantenner-i-iot-enheter\" class=\"wp-block-heading\">Betydelsen av mobilantenner i IoT-enheter<\/h3>\n\n\n\n<p>Mobilantenner g\u00f6r att IoT-enheter kan s\u00e4nda och ta emot signaler i mobiln\u00e4tverket, och ger d\u00e4rmed en gateway som kommunicerar data \u00f6ver stora avst\u00e5nd. Denna f\u00f6rm\u00e5ga \u00e4r avg\u00f6rande f\u00f6r till\u00e4mpningar d\u00e4r implementering av sm\u00e5 enheter med tillf\u00f6rlitliga anslutningar \u00e4r avg\u00f6rande, till exempel <a href=\"https:\/\/knowhow.distrelec.com\/sv\/internet-of-things-iot\/uppkomsten-av-iot-i-smarta-stader\/\" target=\"_blank\" rel=\"noreferrer noopener\">smart stadsinfrastruktur<\/a>, <a href=\"https:\/\/knowhow.distrelec.com\/sv\/underhall-reparation-och-drift\/ett-recept-for-effektivitet-hur-smart-underhall-forandrar-halso-och-sjukvarden\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u00e4lso\u00f6vervakning<\/a> och fj\u00e4rravk\u00e4nning.<\/p>\n\n\n\n<h3 id=\"vad-ar-jordplan-och-varfor-ar-de-viktiga\" class=\"wp-block-heading\">Vad \u00e4r jordplan och varf\u00f6r \u00e4r de viktiga?<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img  loading=\"lazy\"  decoding=\"async\"  height=\"576\"  width=\"1024\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABAAAAAJAAQMAAAApW4aWAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAF5JREFUeNrtwQEBAAAAgiD\/r25IQAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAO8GIk8AAbOpTZoAAAAASUVORK5CYII=\"  alt=\"\"  class=\"wp-image-63100 pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/iStock-1435226158-1024x576.jpg\" ><\/figure>\n\n\n\n<p>Ett jordplan \u00e4r en ledande yta som fungerar som ett reflekterande lager f\u00f6r antennens utstr\u00e5lande element. Det bidrar till att forma antennens returstr\u00f6mkrets, som \u00e4r avg\u00f6rande f\u00f6r utformningen av str\u00e5lningsm\u00f6nstret. Jordplanet fungerar i princip som den &#8221;andra halvan&#8221; av en dipolantenn, och \u00e4r avg\u00f6rande f\u00f6r balanserad drift. I ett antennsystem p\u00e5verkar jordplanet str\u00e5lm\u00f6nstret, bandbredden, impedansen och systemets \u00f6vergripande effektivitet genom att forma och rikta signalen. Vid utformning av sm\u00e5 enheter \u00e4r det vanligt att ignorera den h\u00e4r komponenten i antennsystemet, vilket kan resultera i d\u00e5lig prestanda och kommunikationsproblem. Ett korrekt utformat jordplan s\u00e4kerst\u00e4ller att antennsystemets resonans h\u00e5ller \u00f6nskade frekvenser, vilket ger effektiv kommunikation.<\/p>\n\n\n\n<h4 id=\"jordplanens-betydelse-for-mobilantenner\" class=\"wp-block-heading\">Jordplanens betydelse f\u00f6r mobilantenner<\/h4>\n\n\n\n<p>Ett jordplan \u00e4r viktigt f\u00f6r mobilantenner av tv\u00e5 huvudorsaker:<\/p>\n\n\n\n<p><strong>Impedansmatchning:<\/strong> f\u00f6r att garantera optimal str\u00f6m\u00f6verf\u00f6ring m\u00e5ste mobilantennernas impedans vara matchad med \u00f6verf\u00f6ringsledningens, som normalt sett \u00e4r 50 ohm. F\u00f6r att bibeh\u00e5lla impedansmatchningen m\u00e5ste jordplanets konstruktion ta h\u00e4nsyn till dess potential att \u00e4ndra antennens impedans.<\/p>\n\n\n\n<p><strong>Styrning av str\u00e5lningsm\u00f6nster: <\/strong>ett v\u00e4l utformat jordplan hj\u00e4lper till att skapa ett konsekvent och riktat str\u00e5lningsm\u00f6nster, vilket \u00e4r avg\u00f6rande f\u00f6r mobilantenner som m\u00e5ste uppr\u00e4tth\u00e5lla en anslutning med en n\u00e4tverksmast, som ofta finns flera kilometer bort.<\/p>\n\n\n\n<h3 id=\"sa-har-optimerar-du-jordplan-i-kompakta-iot-enheter\" class=\"wp-block-heading\">S\u00e5 h\u00e4r optimerar du jordplan i kompakta IoT-enheter<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img  loading=\"lazy\"  decoding=\"async\"  height=\"510\"  width=\"1024\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"\"  class=\"wp-image-63117 pk-lazyload\"  style=\"aspect-ratio:2.007843137254902;width:700px;height:auto\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/iStock-1150351738-1024x510.jpg\" ><figcaption class=\"wp-element-caption\">Konceptet bakom IoT-teknik mot en bl\u00e5 bakgrund. Konceptet bakom att ansluta enheter.<\/figcaption><\/figure>\n\n\n\n<p>Kompakta IoT-enheter inneb\u00e4r unika utmaningar p\u00e5 grund av det begr\u00e4nsade utrymmet f\u00f6r antenninstallationen. Jordplan har ofta en kvartsv\u00e5gl\u00e4ngd av signalen vid den l\u00e4gsta driftfrekvensen, vilket inneb\u00e4r att de vanligtvis \u00e4r f\u00f6r stora f\u00f6r att f\u00e5 plats inuti dessa sm\u00e5 enheter. Ett begr\u00e4nsat jordplan kan orsaka en rad problem, inklusive:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Minskad antenneffektivitet och f\u00f6rst\u00e4rkning<\/li>\n\n\n\n<li>Felmatchad impedans.<\/li>\n\n\n\n<li>St\u00f6rning av str\u00e5lningsm\u00f6nstret, vilket ger otillf\u00f6rlitlig anslutning.<\/li>\n<\/ul>\n\n\n\n<p>Att utforma mobilantenner f\u00f6r kompakta IoT-enheter kr\u00e4ver innovativa metoder f\u00f6r att hantera de begr\u00e4nsningar som kan finnas f\u00f6r jordplan. H\u00e4r f\u00f6ljer n\u00e5gra s\u00e4tt att \u00f6vervinna dessa utmaningar:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Anv\u00e4ndning av kretskort<\/strong>: att anv\u00e4nda ett kretskort (PCB) som del av jordplanet \u00e4r en vanlig teknik i kompakta enheter. Kretskortet m\u00e5ste utformas omsorgsfullt s\u00e5 att det finns tillr\u00e4ckligt med plats f\u00f6r jordplanet, samtidigt som h\u00e4nsyn tas till placeringen av de andra komponenterna.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Innovativ utformning\/typer av antenner<\/strong>: sm\u00e5 tr\u00e5dl\u00f6sa enheter anv\u00e4nder ofta antenner som plana inverterade F-antenner (PIFA), p\u00e5 grund av deras l\u00e5ga profil och kapacitet att anv\u00e4ndas med ett mindre jordplan. Den h\u00e4r typen av antenner har b\u00f6rjat bli mycket vanliga p\u00e5 <a href=\"https:\/\/www.antenna-theory.com\/antennas\/patches\/pifa.php\">mobiltelefonmarknaden<\/a>.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Material med h\u00f6g dielektrisk h\u00e5llfasthet<\/strong>: det \u00e4r m\u00f6jligt att &#8221;krympa&#8221; signalens v\u00e5gl\u00e4ngd i mediet genom att anv\u00e4nda material med h\u00f6g dielektrisk konstant, vilket m\u00f6jligg\u00f6r anv\u00e4ndning av ett mindre jordplan utan att kompromissa med prestanda.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Anv\u00e4nda chassit:<\/strong> chassit kan fungera som ett anv\u00e4ndbart jordplan f\u00f6r prylar med metallh\u00f6ljen eller ramar. <a href=\"https:\/\/knowhow.distrelec.com\/sv\/medicin-och-halso-sjukvard\/utvecklingen-av-avancerade-wearables\/\">B\u00e4rbar teknologi<\/a> \u00e4r ett omr\u00e5de d\u00e4r den h\u00e4r tekniken kan vara s\u00e4rskilt praktisk, eftersom prylens metallh\u00f6lje kan ge en tillr\u00e4cklig yta.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L\u00e4gga till laddningsspolar:<\/strong> antennen kan g\u00f6ras l\u00e4ngre elektriskt utan att \u00f6ka den fysiska storleken genom att l\u00e4gga till en laddningsspole i utformningen. Detta \u00f6kar antennens effektivitet med ett mindre jordplan genom att l\u00e5ta den resonera vid l\u00e4gre frekvenser.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N\u00e4rf\u00e4ltsresonant parasitism (NFRP)<\/strong>: med den h\u00e4r metoden omges antennen av parasitiska element med resonans som p\u00e5 effektivt s\u00e4tt \u00f6kar planets elektriska storlek utan att enhetens fysiska storlek \u00f6kar.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Komponenter f\u00f6r aktiv justering:<\/strong> enheter f\u00f6r aktiv justering som varaktorer eller MEMS-omkopplare kan anv\u00e4ndas f\u00f6r att modifiera antennens resonansfrekvens och kompensera f\u00f6r antennens mindre jordplan.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"overvaganden-for-att-valja-antenn-till-en-kompakt-iot-enhet\" class=\"wp-block-heading\">\u00d6verv\u00e4ganden f\u00f6r att v\u00e4lja antenn till en kompakt IoT-enhet<\/h3>\n\n\n\n<p>T\u00e4nk p\u00e5 f\u00f6ljande designfaktorer f\u00f6r jordplanet n\u00e4r du skapar eller v\u00e4ljer en antenn f\u00f6r sm\u00e5 IoT-enheter:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Storlek och form:<\/strong> \u00e4ven i sm\u00e5 enheter b\u00f6r jordplanet vara s\u00e5 stort som m\u00f6jligt med h\u00e4nsyn till konstruktionen, och helst spridas ut i alla riktningar fr\u00e5n antennens matningspunkt.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Material:<\/strong> en utm\u00e4rkt elektrisk ledare, vanligtvis koppar, b\u00f6r anv\u00e4ndas f\u00f6r antennens jordplan.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Positionering: <\/strong>f\u00f6r att f\u00f6rhindra att justeringen \u00e4ndras p\u00e5 grund av anv\u00e4ndarens h\u00e4nder eller omgivande f\u00f6rem\u00e5l, m\u00e5ste antennen placeras noga med h\u00e4nsyn till jordplanet.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Integrering:<\/strong> f\u00f6r att minska problemen med jordplanets prestanda, b\u00f6r antennerna tas med i designen redan i b\u00f6rjan av utvecklingsprocessen.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"rekommenderad-produkt\" class=\"wp-block-heading\">Rekommenderad produkt<\/h2>\n\n\n\n<h3 id=\"taoglas-pcs-55-a-mobilantenn\" class=\"wp-block-heading\">Taoglas PCS.55.A mobilantenn<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"1020\"  height=\"570\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAA\/wAAAI6AQMAAACgqdGlAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAF1JREFUeNrtwQEBAAAAgiD\/r25IQAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAvBsfSQABeZS+xAAAAABJRU5ErkJggg==\"  alt=\"\"  class=\"wp-image-63134 pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 1020px) 100vw, 1020px\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/Taoglas-TFX257.A-30383406-01.jpg\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/Taoglas-TFX257.A-30383406-01.jpg 1020w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/Taoglas-TFX257.A-30383406-01.jpg?resize=300,168 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/Taoglas-TFX257.A-30383406-01.jpg?resize=768,429 768w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/Taoglas-TFX257.A-30383406-01.jpg?resize=380,212 380w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/Taoglas-TFX257.A-30383406-01.jpg?resize=550,307 550w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2023\/11\/Taoglas-TFX257.A-30383406-01.jpg?resize=800,447 800w\" ><\/figure>\n\n\n\n<p>PCS.55.A \u00e4r en patents\u00f6kt kompakt mobilantenn s\u00e4rskilt konstruerad f\u00f6r IoT-enheter med sm\u00e5 jordplan. Den kombinerar revolutionerande teknik f\u00f6r antennutformning med Taoglas erfarenheter av antennintegrering f\u00f6r att tillhandah\u00e5lla bredbandst\u00e4ckning f\u00f6r b\u00e5de 5G\/4G LTE- och GNSS-banden, inklusive de mest kr\u00e4vande 600\u2013700 MHz-banden.<\/p>\n\n\n\n<p>PCS.55.A ger en enkel hyllf\u00e4rdig l\u00f6sning f\u00f6r LTE-, CAT-M-, NB-IoT-, och GNSS-till\u00e4mpningar och m\u00e4ter endast 27x10x1,6 mm. Denna kompakta mobilantenn \u00e4r den perfekta antennen f\u00f6r sm\u00e5 IoT-enheter, d\u00e4r kraven p\u00e5 mindre kretskortsdesign i allt h\u00f6gre grad h\u00e4nger p\u00e5 antennstorleken. Antennen kr\u00e4ver ett extremt litet keep-out-omr\u00e5de och beh\u00f6ver betydligt f\u00e4rre matchande komponenter j\u00e4mf\u00f6rt med de flesta andra kompakta mobilantennerna p\u00e5 marknaden. Detta resulterar en mindre och enklare design, vilket minskar materialbehovet f\u00f6r enheten och skyndar p\u00e5 tiden till marknaden.<\/p>\n\n\n\n<h4 id=\"egenskaper\" class=\"wp-block-heading\">Egenskaper<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>V\u00e4rldsomsp\u00e4nnande produkt <\/strong>\u2013 tre olika matchande kretsar kan anv\u00e4ndas f\u00f6r att ge optimal prestanda baserat p\u00e5 var kunden finns. Optimala komponenter f\u00f6r Nordamerika (NA), Europeiska unionen (EU) och globalt (WW) har fastst\u00e4llts f\u00f6r att g\u00f6ra det m\u00f6jligt f\u00f6r konstrukt\u00f6rer att enkelt integrera PCS.55.A f\u00f6r att f\u00e5 b\u00e4sta m\u00f6jliga prestanda vid alla eventuella implementeringsscenarion. PCS.55.A \u00e4r enkelt att integrera med SMD-standardtekniker, och de matchande kretsarna f\u00f6r varje implementering (NA, EMEA eller WW) har f\u00f6renklats till en konfiguration med tre komponenter som m\u00f6jligg\u00f6r st\u00f6rre flexibilitet p\u00e5 anv\u00e4ndarsidan.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>F\u00f6renklat integreringspaket:<\/strong> anv\u00e4ndningen av endast tre matchande komponenter per integrering (till skillnad fr\u00e5n upp till 15 p\u00e5 j\u00e4mf\u00f6rbara antenner) g\u00f6r att kunden kan anv\u00e4nda antennen med en mindre materiallista och mindre \u201dbortfall\u201d genom matchning av n\u00f6dv\u00e4ndiga komponenter.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mindre keep-out-omr\u00e5de<\/strong>:&nbsp; extremt kompakt keep-out-omr\u00e5de g\u00f6r att antennen kan integreras p\u00e5 sm\u00e5, smala kretskort d\u00e4r utrymmet \u00e4r begr\u00e4nsat.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"viktiga-produktspecifikationer\" class=\"wp-block-heading\">Viktiga produktspecifikationer:<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Material<\/td><td>FR4<\/td><\/tr><tr><td>Frekvensomr\u00e5de<\/td><td>600 MHz till 3 GHz<\/td><\/tr><tr><td>Effektivitet<\/td><td>Upp till 47&nbsp;%<\/td><\/tr><tr><td>Str\u00e5lningsm\u00f6nster<\/td><td>Rundstr\u00e5lande<\/td><\/tr><tr><td>F\u00e4ste<\/td><td>Ytmontering<\/td><\/tr><tr><td>M\u00e5tt<\/td><td>27 x 10 x 1,6 mm<\/td><\/tr><tr><td>Vikt<\/td><td>0,9 g<\/td><\/tr><tr><td>Temperaturomr\u00e5de<\/td><td>-40&nbsp;\u2103 till +85&nbsp;\u2103<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-red-background-color has-background wp-element-button\" href=\"https:\/\/www.elfa.se\/sv\/cellular-antenna-4g-5g-gps-smd-taoglas-pcs-55\/p\/30383406?trackQuery=cat-DNAV_PL_3525683&amp;pos=17&amp;origPos=17&amp;origPageSize=50&amp;track=true\" target=\"_blank\" rel=\"noreferrer noopener\">K\u00f6p en Taoglas PCS.55.A mobilantenn<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"I IoT-enheternas v\u00e4rld d\u00e4r komponenterna blir mindre och mindre, \u00e4r mobilantenner viktiga komponenter som underl\u00e4ttar anslutning och kommunikation.&hellip;\n","protected":false},"author":27,"featured_media":63167,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[240,1013],"tags":[],"coauthors":[1736],"class_list":{"0":"post-63915","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-elektronik-sv","8":"category-internet-of-things-iot","9":"cs-entry","10":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - 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