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class="home-main container clearfix"><div id="8o3dkry" class="twoCol"><div id="exm3hj7" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_txcp/">通信產(chǎn)品</a>?<a href="http://www.cdcfah.com/cp/second-txcp_tianxianyk/">天線(xiàn)</a>?<a href="http://www.cdcfah.com/cp/third-tianxianyk_txtxhv/">通信天線(xiàn)</a>?揚(yáng)州手持機(jī)天線(xiàn) 歡迎咨詢(xún) 泉州市天陸通信科技供應(yīng)</p><div id="g8phev8" class="leftbox clearfix"><h1>揚(yáng)州手持機(jī)天線(xiàn) 歡迎咨詢(xún) 泉州市天陸通信科技供應(yīng)</h1><div id="md2npmo" class="proBig"><div id="eynhtfc" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422024553695_qztl_8905960.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2icegxe" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422024553695_qztl_8905960.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="osuwtv2" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>福建省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>揚(yáng)州手持機(jī)天線(xiàn),天線(xiàn)</p><p><span>***更新：</span>2020-09-11 09:03:04</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="uxuwi7s" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">泉州市天陸通信科技有限公司</a></p><p><span>聯(lián)系人：</span>景經(jīng)理</p><p><span>郵箱: </span>3131314848@qq.com</p><p><span>電話(huà): </span>18520272999</p><p><span>傳真: </span>0595_22002867</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0595-22001867</p><p><span>地址: </span>福建省泉州市豐澤區(qū)北峰工業(yè)區(qū)豐盛路20號(hào) </p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ns2mj98" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="fzgdkj3" class="box"><p><p> GPS天線(xiàn)有哪些分類(lèi)呢？可以根據(jù)不同的維度進(jìn)行分類(lèi)，下面GPS天線(xiàn)廠(chǎng)家來(lái)給您具體介紹一下：1、從極化方式上GPS天線(xiàn)分為垂直極化和圓形極化。以現(xiàn)在的技術(shù)，揚(yáng)州手持機(jī)天線(xiàn)，垂直極化的效果比不上圓形極化。因此除了特殊情況，GPS天線(xiàn)都會(huì)采用圓形極化和線(xiàn)性極化。2、從放置方式上GPS天線(xiàn)分為內(nèi)置天線(xiàn)和外置天線(xiàn)。天線(xiàn)的裝配位置也是十分重要。早期GPS手持機(jī)多采用外翻式天線(xiàn)，此時(shí)天線(xiàn)與整機(jī)內(nèi)部基本隔離，EMI幾乎不對(duì)其造成影響，收星效果很好?，F(xiàn)在隨著小型化潮流，GPS天線(xiàn)多采用內(nèi)置。此時(shí)天線(xiàn)必須在所有金屬器件上方，殼內(nèi)須電鍍并良好接地，遠(yuǎn)離EMI干擾源，比如CPU，SDRAM，SD卡，晶振，DC/DC。車(chē)載GPS的應(yīng)用會(huì)越來(lái)越普遍。而汽車(chē)的外殼，特別是汽車(chē)防爆膜會(huì)GPS信號(hào)產(chǎn)生嚴(yán)重的阻礙。一個(gè)帶磁鐵（能吸附到車(chē)頂）的外接天線(xiàn)對(duì)于車(chē)載GPS來(lái)說(shuō)是非常有必要的。3，揚(yáng)州手持機(jī)天線(xiàn)、從供電方面又分有源和無(wú)源。外置式GPS為有源天線(xiàn)，無(wú)源天線(xiàn)就是不含LNA放大器，只是天線(xiàn)本體，揚(yáng)州手持機(jī)天線(xiàn)。智能天線(xiàn)可以明顯改善無(wú)線(xiàn)通信系統(tǒng)的性能，提高系統(tǒng)的容量。揚(yáng)州手持機(jī)天線(xiàn)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚(yáng)州手持機(jī)天線(xiàn),天線(xiàn)" src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422024553695_qztl_8905960.jpg"></div><p style="text-indent:25px">5G時(shí)代臨近，全球多國(guó)**和組織、學(xué)術(shù)界與工業(yè)界均已開(kāi)始開(kāi)展5G原型系統(tǒng)與關(guān)鍵技術(shù)的研發(fā)，預(yù)計(jì)將于2020年進(jìn)入商業(yè)化部署階段，屆時(shí)可實(shí)現(xiàn)高達(dá)10?Gbit/s的傳輸速率、1000倍的系統(tǒng)容量提升和千億設(shè)備的連接，以滿(mǎn)足移動(dòng)互聯(lián)網(wǎng)和物聯(lián)網(wǎng)高速發(fā)展對(duì)移動(dòng)數(shù)據(jù)業(yè)務(wù)的需求。與2G、3G和4G技術(shù)的演進(jìn)相比，5G技術(shù)不**是追求傳輸速率的提升，而且是與各個(gè)垂直行業(yè)的應(yīng)用相互結(jié)合，大帶寬高速率、低時(shí)延高可靠、低功耗大連接等5G技術(shù)特點(diǎn)在不同行業(yè)中將有不同的需求，5G的行業(yè)推進(jìn)一定不是技術(shù)驅(qū)動(dòng)的產(chǎn)物，而是應(yīng)用驅(qū)動(dòng)的結(jié)果。目前，5G通信系統(tǒng)要實(shí)現(xiàn)速率和系統(tǒng)容量的提升，需通過(guò)開(kāi)發(fā)新頻譜資源、提高頻譜效率和布置超密集網(wǎng)絡(luò)等途徑實(shí)現(xiàn)，因此需要開(kāi)發(fā)新的無(wú)線(xiàn)傳輸技術(shù)來(lái)滿(mǎn)足以上需求。毫米波頻段（30GHz-300GHz）具有較豐富的頻譜資源，能夠提供較大的信號(hào)帶寬，同時(shí)在毫米波頻段采用波束賦形（Beam forming）技術(shù)可以有效地克服毫米波傳輸問(wèn)題，從而擴(kuò)展毫米波通信的距離。鎮(zhèn)江天線(xiàn)4G天線(xiàn)的分析是判定給定4G天線(xiàn)結(jié)構(gòu)的方向和阻抗特性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚(yáng)州手持機(jī)天線(xiàn),天線(xiàn)" src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422109030599_qztl_2904532.jpg"></div><p> WIFI天線(xiàn)**主要的功用在于變換傳達(dá)介質(zhì)中(一般是空氣介質(zhì))輻射電磁波能量與收發(fā)機(jī)所送出或收到的能量。在能量變換的過(guò)程中，會(huì)出現(xiàn)有收發(fā)機(jī)與WIFI天線(xiàn)及WIFI天線(xiàn)與傳達(dá)介質(zhì)之間的不接連接口。在無(wú)線(xiàn)通訊體系中，WIFI天線(xiàn)有必要按照這兩個(gè)接口的特性來(lái)做恰當(dāng)?shù)囊?guī)劃，以使得收發(fā)機(jī)、WIFI天線(xiàn)以及傳達(dá)介質(zhì)之間構(gòu)成一個(gè)接連的能量傳輸路徑，如此便能夠順暢的將發(fā)射機(jī)的能量藉由發(fā)射WIFI天線(xiàn)輻射到傳達(dá)介質(zhì)中，并藉由接收WIFI天線(xiàn)將輻射電磁波的能量傳送到接收機(jī)端。為了能夠闡明這兩個(gè)接詰母饗釤匭裕?列出了一些主要的參數(shù)，以下就這些參數(shù)的界說(shuō)加以闡明：WIFI天線(xiàn)輸入阻抗(InputImpedance)WIFI天線(xiàn)的輸入阻抗是以收發(fā)機(jī)天線(xiàn)間的接口線(xiàn)端看入到的阻抗值。讓W(xué)IFI天線(xiàn)與收發(fā)電路間到達(dá)阻抗匹配(ImpedanceMatching)以下降因不匹配景象所形成的反射丟失(ReturnLoss)，故WIFI天線(xiàn)的輸入阻抗有必要與收發(fā)機(jī)電路的輸出阻抗相互匹配，如此一來(lái)才不至于使得大部份能量在WIFI天線(xiàn)與收發(fā)機(jī)之間就損耗掉。以一般的WIFI天線(xiàn)規(guī)劃來(lái)說(shuō)，一般輸入阻抗是無(wú)法做大規(guī)模的改動(dòng)。**普遍的規(guī)劃方式是將WIFI天線(xiàn)的輸入阻抗規(guī)劃在一般電路中所常運(yùn)用的50奧姆。</p><p style="text-indent:25px">保護(hù)車(chē)載天線(xiàn)需要注意哪些？ ?天線(xiàn)處于車(chē)頂正中位置時(shí)發(fā)射效果比較好，但是這樣的話(huà)天線(xiàn)很高，過(guò)隧道或林蔭路的時(shí)候容易被掛到天線(xiàn)。下面請(qǐng)看車(chē)載天線(xiàn)需要注意哪些？ ?1：不使用仿造天線(xiàn)（因?yàn)橘|(zhì)量沒(méi)有保證），要么用鉆石天線(xiàn)，要么就用協(xié)會(huì)天線(xiàn)。保證天線(xiàn)本身具有1.5以下的駐波比。并且保證阻抗，電抗匹配。 ?2：天線(xiàn)不可以放倒使用，放倒以后駐波會(huì)很大，損傷機(jī)器。 ?3：天線(xiàn)不可放在室內(nèi)使用，同時(shí)也造成高駐波。還有害人體。 ?4：盡量不要總是拆卸天線(xiàn)，日久容易造成接觸不良產(chǎn)生高駐波，影響機(jī)器壽命。 ?5：下雨天注意接頭不能夠進(jìn)水，如果進(jìn)水，也會(huì)駐波高。平時(shí)也注意接頭的檢查。有沒(méi)有松曠的狀況。 ?6：經(jīng)常檢查饋線(xiàn)出車(chē)端，有沒(méi)有破損，如果有破損建議更換，因?yàn)橐矔?huì)造成電波泄漏，形成駐波，危害人體。如果斷了的就不能發(fā)射了。 ?7：車(chē)隊(duì)或者近距離通聯(lián)用小功率發(fā)射，也會(huì)增加車(chē)臺(tái)使用壽命。也對(duì)自己的健康有益。 ?8：如果是車(chē)載天線(xiàn)，車(chē)上的整流器對(duì)電瓶的輸出電壓要保證在15V以下。平時(shí)可以用電表測(cè)量。需要注意的是：熄火的時(shí)候電壓一般在12.5V左右，待速的電壓應(yīng)該在13.5V左右，提高轉(zhuǎn)速3千轉(zhuǎn)，只要不超過(guò)14V就說(shuō)明整流器沒(méi)有問(wèn)題。電臺(tái)也會(huì)得到很好的保護(hù)。下雨天注意接頭不能夠進(jìn)水，如果進(jìn)水，也會(huì)駐波高。平時(shí)也注意接頭的檢查。有沒(méi)有松曠的狀況。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚(yáng)州手持機(jī)天線(xiàn),天線(xiàn)" src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422046903737_qztl_4891799.jpg"></div><p> 四、GPS天線(xiàn)的性能影響GPS天線(xiàn)性能的主要是以下幾個(gè)方面：1、陶瓷片：陶瓷粉末的好壞以及燒結(jié)工藝直接影響它的性能。現(xiàn)市面使用的陶瓷片主要是25×25、18×18、15×15、12×12。陶瓷片面積越大，介電常數(shù)越大，其共振頻率越高，接受效果越好。陶瓷片大多是正方形設(shè)計(jì)，是為了保證在XY方向上共振基本一致，從而達(dá)到均勻收星的效果。2、銀層：陶瓷天線(xiàn)表面銀層可以影響天線(xiàn)共振頻率。理想的GPS陶瓷片頻點(diǎn)準(zhǔn)確落在，但天線(xiàn)頻點(diǎn)非常容易受到周邊環(huán)境影響，特別是裝配在整機(jī)內(nèi)，必須通過(guò)調(diào)整銀面涂層外形，來(lái)調(diào)節(jié)頻點(diǎn)重新保持在。因此GPS整機(jī)廠(chǎng)家在采購(gòu)天線(xiàn)時(shí)一定要配合天線(xiàn)廠(chǎng)家，提供整機(jī)樣品進(jìn)行測(cè)試。3、饋點(diǎn)：陶瓷天線(xiàn)通過(guò)饋點(diǎn)收集共振信號(hào)并發(fā)送至后端。由于天線(xiàn)阻抗匹配的原因，饋點(diǎn)一般不是在天線(xiàn)的正**，而是在XY方向上做微小調(diào)整。這樣的阻抗匹配方法簡(jiǎn)單而且沒(méi)有增加成本。*在單軸方向上移動(dòng)稱(chēng)為單偏天線(xiàn)，在兩軸均做移動(dòng)稱(chēng)為雙偏。4、放大電路：承載陶瓷天線(xiàn)的PCB形狀及面積。由于GPS有觸地反彈的特性，當(dāng)背景是7cm×7cm無(wú)間斷大地時(shí)，patch天線(xiàn)的效能可以發(fā)揮到。雖然受外觀結(jié)構(gòu)等因素制約，但盡量保持相當(dāng)?shù)拿娣e且形狀均勻。GPS就是通過(guò)接受衛(wèi)星信號(hào)，進(jìn)行定位或者導(dǎo)航的終端。晉江船舶天線(xiàn)</p><p style="text-indent:25px"> 天線(xiàn)處于車(chē)頂正中位置時(shí)發(fā)射效果比較好，但是這樣的話(huà)天線(xiàn)很高，過(guò)隧道或林蔭路的時(shí)候容易被掛到天線(xiàn)。揚(yáng)州手持機(jī)天線(xiàn)</p><p style="text-indent:25px">通信產(chǎn)品是當(dāng)今基礎(chǔ)的民生服務(wù)行業(yè)之一，并且隨著工信部2015年信息通信業(yè)“十三五”規(guī)劃的出臺(tái)，市場(chǎng)對(duì)于通信產(chǎn)品熱度有增無(wú)減。專(zhuān)網(wǎng)通信產(chǎn)品是各**門(mén)實(shí)現(xiàn)指揮調(diào)度的必備裝備，一般要求大型組網(wǎng)和高性能產(chǎn)品，因此玻璃鋼天線(xiàn)，車(chē)載天線(xiàn)，船舶天線(xiàn)，對(duì)講機(jī)天線(xiàn)是專(zhuān)業(yè)無(wú)線(xiàn)通信行業(yè)極大的細(xì)分市場(chǎng)。中國(guó)通信產(chǎn)業(yè)年度**事件和通信產(chǎn)業(yè)年度**技術(shù)趨勢(shì)的發(fā)布已經(jīng)成為中國(guó)通信產(chǎn)業(yè)大會(huì)的鮮明標(biāo)簽，持續(xù)十年之久。每年大會(huì)發(fā)布的年度判斷，被企業(yè)普遍引用和期待，成為過(guò)去年度的一個(gè)行業(yè)烙印總結(jié)，成為未來(lái)一年技術(shù)市場(chǎng)生產(chǎn)型的一個(gè)預(yù)測(cè)。技術(shù)的發(fā)展必然將引發(fā)加工的擴(kuò)容、重組與兼容，也將促進(jìn)加工的多元化業(yè)務(wù)發(fā)展，并**終對(duì)通信設(shè)備制造業(yè)、終端產(chǎn)業(yè)和通信技術(shù)服務(wù)業(yè)等上下游產(chǎn)業(yè)形成有力拉動(dòng)。揚(yáng)州手持機(jī)天線(xiàn)</p><p style="text-indent:25px">泉州市天陸通信科技有限公司致力于通信產(chǎn)品，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。泉州市天陸通信深耕行業(yè)多年，始終以客戶(hù)的需求為向?qū)?，為客?hù)提供***的玻璃鋼天線(xiàn)，車(chē)載天線(xiàn)，船舶天線(xiàn)，對(duì)講機(jī)天線(xiàn)。泉州市天陸通信致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶(hù)產(chǎn)品上的貼心，為用戶(hù)帶來(lái)良好體驗(yàn)。泉州市天陸通信創(chuàng)始人黃高發(fā)，始終關(guān)注客戶(hù)，創(chuàng)新科技，竭誠(chéng)為客戶(hù)提供良好的服務(wù)。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/1239972.html</p></div></div></div></div></div><div id="hbyf8fc" class="page-right twoColRt"><div id="qvc3yac" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="peg3xuw" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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